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HSC Option 4 Improving Performance Focus Question 1 How do athletes train for improved performance? Strength training The main goal of strength training is to increase the maximum force that a particular muscle group can generate Muscles will be stronger if exercised regularly at high enough intensity Strength training can take different forms and can involve a variety of techniques During strength training, elements of isotonic, isometric and isokinetic contractions can be used Training incorporates elements of each depending on types of exercises, machinery and the strength development being sought Free weights are preferred by most body-builders and people seeking pure strength because they enable the participant to isolate muscles completely, and give the joints and limbs an opportunity to move along their natural planes Four types of strength: Absolute strength: the maximum force that can be generated by a muscle e.g. weight lifting Relative strength: the maximum strength that can be generated by muscle relative to a person’s weight e.g. male ballet dancer Strength endurance: the ability for a muscle to withstand fatigue and exert a force repeatedly over an extended period of time E.g. rower Speed strength: the ability to apply a force at a rapid rate e.g. sprint start Terms used in Strength Training: Term Definition Repetition The number of times an exercise is repeated without rest Resistance The weight or load Set A number of repetitions done in succession Repetition Maximal The maximal weight you can lift a number of times. Rest The period of time between each set Periodisation: process of varying the training load over discrete periods of time Strength requirements differ in terms of: • How heavy the weight is • The number of repetitions • The speed it is being lifted Exercise Designed for Major Muscle Groups: All strength programs utilise repetition of exercises and overload to work a muscle group. A muscle that is worked close to its capacity (above 2/3 of max) to generate peak force will experience gains in strength. By varying the resistance, speed, repetitions, sets and rest, the required muscle fibres are recruited and developed. A session should start involving large muscle groups early and commence specific exercises towards the end. Strength training is done for a number of reasons to develop muscular strength or endurance to develop power to lose weight to get some muscle definition Safe performance requires: Individually developed programs that discourage competition Adequate warm up and cool down – emphasis on stretching Focus on major muscle groups Concentration on form/technique – not on increasing resistance too quickly Monitoring progress Using a spotter if uncertain of ability Adequately maintained equipment Special techniques Breathing in as lifting and out as lowering Never holding one’s breath – increases blood pressure Lifting with rhythm – not jerky movements Strength training can be tailored to the specific needs of the individual i.e. upper body or lower body, sport specific, to suit body type, health issues, past injuries etc. Gyms can provide information on what exercises are available for specific body parts and whether these are free weights or machines Some possible exercises chest: flat dumbbell press; flat dumbbell fly; machine press biceps: seated biceps curl (both arms), curl with a twist, alternate arm curl triceps: lying dumbbell extension; seated one-arm triceps overhead extension; triceps push down machine shoulder: lateral shoulder raises; seated dumbbell press; chin ups back: single or double bent arm dumbbell row; seated pull row, lateral pull down ( in front and behind head, narrow and wide grip) abdominals: knee-raised crunches; alternate knee in crunches; abdominal machine quadriceps: variety of squats; leg extension machine calf: calf raises ( standing or seated, weighted or not, toe in or out, machine or free Elastics – resistance that is created by the band increases as the band is stretched. Exposure to a progressively increasing stimulus ensures that the muscle is strengthened through the full ROM. Hydraulics – Resistance is altered through cylinder adjustments and a response to speed of action Hydraulics provides resistance through both phases of a movement (eg. push and pull) Weight Training – plates, dumbbells Weight discs or plates anchored to barbells comprise free weights. The exact weight can be set to ensure th overload principle applies Dumbbells consist of two weights attached to a short bar, designed to be lifted with one hand Dumbbells are important in injury rehab, when a specific muscle needs to be targeted as a part of injury rehab. Isotonic training: Isotonic programs use free weights with fixed resistance and tailor loads to allow completion of an exercise a desired number of times. During isotonic training, the muscle length changes constantly as the resistance is moved through a full range motion. Advantages: Minimal equipment More specificity Variations easily adapted to suit most sports Most common Cheap, accessible and easy to learn Disadvantages: May encourage poor technique Moderate level of injury Resistance does not remain maximal through the full range of movement, failing to develop fibres fully Isometric training: During this type of training, the muscles develop tension but do not change in length. A typical isometric training session is pushing or pulling against an immovable object. Tension develops in the muscle because there is resistance but the muscle does not shorten since the object will not move. Advantages: Minimal equipment Helpful for weak points in muscle contractions Easy to learn, quick, easy to perform Valuable in rehab Disadvantages: Not functional – poor specificity Reduces speed Large changes in blood pressure when using large muscle groups Difficult to measure gains Does not produce muscular endurance Isokinetic training: This involves the use of elaborate machines that allow maximum tension to develop in the muscle through the full range of motion. Therefore the level of resistance varies, depending on the joint angle. Advantages: Most beneficial as it activates the largest number of muscle units Strength gains are constant throughout the full range of movement because the level of resistance offered is constant Gains in strength are longer lasting Speed specific – slower/equal to endurance speed used in training Good for rehab Disadvantages: Very expensive machinery Few equipment options available Poor specificity – confined to movements of the machine many of which are not sports specific Aerobic training Continuous/uniform - - Sustained and enduring training – low to moderate intensity. Used to increase CV endurance Needs to be matched to an athletes fitness level Endurance training places demands on the body’s ability to deliver oxygen to muscle cells. Progressively increasing stress is matched by appropriate adaptation, causing the body to vastly improve oxygen delivery, cell functioning and energy transfer. Changes occur in the blood lipids, blood pressure and ability to handle heat and improved oxidation of glycogen and fats. Training for Endurance Endurance training targets the aerobic system. It causes changes to the body’s oxygen transport system Leads to the preferential recruitment of slow twitch muscle fibres which: Have a high capillary density Red in colour Are capable of sustained contraction. Training should be specific to sport/event Examples of principle training methods used are: interval training long, slow distance training ( lowintensity) Fartlek training Area Effect How this improves training Fuel storage and utilisation Increased haemoglobin More oxygen carried to working muscles Increased myoglobin More oxygen from cell membrane to mitochondria where fuel is burnt Increased ability to use fat Reserve fuel used earlier in endurance events Increased storage of ATP and PC Immediate fuel storage increased up to 25% Increased glycogen storage Fuel for lactic acid and aerobic systems increased Increased ability to use glucose Increased enzyme activity - faster breakdown of glycogen Increased heart size Particularly left ventricle – more blood available/heart beat Decreased heart rate Sign of increased heart efficiency as it is able to supply required blood with less heart beats/min Increased stroke volume More blood/stroke Increased cardiac output More blood available to tissues Increased oxygen uptake Increased ability for muscles to extract and utilise oxygen delivered by blood Increased cardiac output More blood for tissues Increased stroke volume More blood/stroke Respiration Increased efficiency More oxygen extracted from air by alveoli and delivered to muscles Other Increased muscle size More strength Decreased body fat Less excess to carry Increased power/strength Faster/more forceful movements Increased muscle elasticity Increased muscle power – reduced injury risk Increased mitochondria More sites on muscle fibre for burning fuel Oxygen transport system at rest Oxygen transport system at maximal exercise Resistance training for endurance events Muscular endurance is important in most sports, including middleand long-distance running and games such as basketball, soccer, netball and touch football. For continuous type movements that form the basis of these activities, the development of maximal power is not an advantage because fast-twitch fibres would be preferentially recruited when slow-twitch fibres are more appropriate. Effective endurance training requires the use of less resistance and more repetitions than is required for absolute strength training. The level of resistance needs to be not more than 66 per cent of the maximum that can be lifted for each exercise (1 RM). Resistances less than 66 per cent of maximum will result in the type of adaptation in the muscles that will enhance endurance, including: larger and more numerous mitochondria in the muscle cells increased capillary density, ensuring plentiful oxygen supply to the muscles improved aerobic enzyme activity, resulting in better oxidation of fuel. A general resistance prescription for endurance is: repetitions maximum — 15 to 30 sets — three to four speed — moderate frequency — three to four days per week. A prescription for endurance needs to be individualised, and should specifically address the sport or activity. This is particularly relevant to the number of repetitions required. As the number of repetitions is raised, strength will decrease and endurance increase. If training for long-distance events, use of lighter weights and many repetitions is appropriate. However, if training for shorter events such as a 400- or 800-metre run, anaerobic threshold training needs to be combined with resistances in the order of 15 to 25 RM. Measuring training effect (MAX VO²) MAX VO2 is the greatest volume of oxygen that can be consumed by the body during exercise per minute at sea level Best single measurement of endurance and aerobic capacity High max oxygen consumption is one of the major determinants of success in aerobic activities e.g. swimming. Other factors include: high lactate threshold high economy of effort high percentage of Slow twitch muscle fibres Laboratory test for VO2 MAX usually involves performing on a treadmill or bicycle ergometer while attached to machines which measure heart rate and ventilation Oxygen consumption continues to increase linearly with increases in workload ( increased speed or incline on the treadmill) until a point is reached at which an increase in intensity does not lead to an increase in oxygen consumption- this is the MAX VO2 Indications that MAX VO2 has been reached include hyperventilation and a heart rate very near to max Field tests usually involve using estimates based on charts of extrapolated measures of MAX VO2 devised from simple exercises conducted at sub maximal levels E.g. beep test/ ‘multistage’ fitness test Coopers 12 minute run 1.6k run fartlek Pace and terrain variations develop a need for planning for this type of training Ideal training method for early pre-season to reintroduce athletes to the more demanding endurance work after the offseason Long interval This method uses reps of high speed intensity work followed by periods of recovery to develop aerobic fitness Workout periods are generally 2-5 mins, with rest periods up to 2 mins. The shorter the rest period, the harder the workout session. Anaerobic training Training for power and speed Developing power through resistance/weight training Starting strength: the ability to ‘turn on’ as many fibres as possible in the performance of a movement. •Important in movements such as power lifting •Momentum is generated before ATP supplies are depleted Explosive strength: the ability to extend the ‘turned on’ period of explosiveness. •Seen in acceleration of the body or object •Important in activities such as shot put, javelin throwing, and high jump •Muscle fibres contract quickly as creatine phosphate works rapidly and repeatedly, resynthesising ADP back to ATP. •Resistance programs designed to develop speed and power will seek to enhance fast-twitch fibres involved in the activity. •If the resistance (weight) is too heavy, the exercises will necessarily be performed slowly, leading to recruitment of slowtwitch fibres. •A general exercise program for power would include: 5-10 RM ( resistance 60 % to 75% of maximal) 3 to 4 sets 5 minutes between sets Fast exercise speed 3 to 4 days a week To develop speed, the resistance is medium - high, and contractions are executed quickly. The principle of specificity to the activity is important. Application Resistance training program Choose any sport or activity Use a range of exercises similar to those in 14.1 (pg 434-5) to design a resistance training program that develops power/speed as required in a particular sport such as boxing or running. Detail your exercise prescription. Plyometric Training Plyometric training: plyometrics refers to a special range of exercises in which a muscle is lengthened using an eccentric contraction and this is rapidly followed by a shortening or concentric contraction. Plyometrics has considerable value in power development because it has been demonstrated that if muscle is stretched (preloaded) before it is shortened it will contract more forcefully. Plyometrics has been used for decades to improve performances in sports such as athletics, b’ball; where the development of reactive power is critical. short interval Similar to long interval but exercise periods are brief and recovery longer to enable restoration of ATP stores Improves the muscle’s ability to tolerate lactic acid Circuit formats can be utilised to achieve the aims of short interval Training for Flexibility Types of flexibility training and the specifics of performance Static flexibility is the range of motion about a joint Dynamic flexibility is the opposition or resistance of a joint to motion Flexibility is limited by the structures in and around joints- such as the bones, muscles, ligaments, tendons, and the overlying skin Most of these are elastic so therefore their ability to stretch can be improved with practice. Bones are not elastic therefore the flexibility of some joints is limited by the shape of the bones and cannot be improved past a certain point Type of Flexibility Training Definition Advantages Disadvantages Best suited for… Static Holding a stretch at its limit for 15-30 seconds - Unlikely to result in injure - does not increase flexibility through full range of movement All activity Ballistic A muscle is taken to its limit, then over stretched by bouncing - Similar in its speed and body movement to actual sporting activity - Can cause muscle soreness and injury, by activating the stretch reflex Ballet, gymnastics Dynamic Rhythmical movement of major muscles through full range of movement - Stretches the muscle groups that cross the major joints - Stretches through the full range of movement - May not stretch sport specific smaller muscle groups Swimming, aerobics P.N.F A gentle stretch, with an isometric muscle contraction against a resistance, followed by relaxation of that muscle and a further stretch - Develops range of motion - Requires a partner that understands what to do All sports Stretching can be: A stretching regime as part of a warm up/cool down Regular scheduled stretching programs over 2-5 days per week, for 15-30 minutes per day with stretches held for 10-30sec. Performed statically, dynamically, ballistically, or PNF Physiotherapists and sports trainers often use tools such as Flexibility Screening Test to screen athletes, predict possible sites of injuries, weakness in athlete and suitability for different sports. Contraindications for flexibility training Contraindicated exercises are those exercises that are seen as being potentially dangerous Some of these may be used by elite athletes or for rehabilitation, but they are not advised for the general population Being an effective coach, trainer, athlete, or fitness leader involves developing an understanding of the factors that increase the risk of injury, being able to evaluate exercises, being able identify the elements that cause injury and being able to modify potentially dangerous exercises Contraindicated exercises are usually recognised when numerous injuries arise from these exercises and are treated by doctors and physios Factors include: extreme movement- go beyond normal and safe range e.g. ballistic movement- performed quickly and without control, dangerous as they place pressure on joints e.g. excessive load- placed on joints or muscles e.g. sustained movement- movements that involve sustained pressure on muscle groups or joints can be dangerous e.g. repetitive movement- excessive repetition of any movement can place strain on body, lead to injuries, strain injuries e.g. Imbalance- developing one muscle group (agonist) while not developing the opposite muscle group ( antagonist) e.g. Skill training Most individual and team sports require the athletes to be able to perform skills competently. The difference between two teams or individual athletes is not always about aerobic or anaerobic capacity, strength or flexibility. Coaches often spend long periods of time improving the performance of basic and complex skills involved in their sports. Drills practice It is important for the Coach to plan activities/training session that challenge the athlete Key point- variety. Athletes will be motivated to perform if training is kept interesting and challenging Variety of drills to practice a particular skill Modifying a well-learned drill by adding defence, obstacles, or other variables adds variety to the training session and makes it more game like- variety of practice methods Demonstrations and explanations should be clear and concise, feedback about practice and performance should be frequent and appropriate. Skill practices vary according to: performer’s skill levels performer’s motivation practice methods used requirements of the sport Analysis of technique To provide relevant instruction and feedback a coach requires good skills of observation and analysis The coach requires the ability to analyse skills into their component parts, and to identify the part that is causing trouble. E.g. Coaches can use video analysis for evaluation purposes. What would be the advantage of this?? Videos can also be used to show performances to athletes, to review team plays, to note faults, and to view another team ( note weaknesses or moves) Methods which can be used to analyse technique include biofeedback, photos, biomechanical analysis and match report sheets Technique correction Once a problem has been identified it is the responsibility of the athlete to use this information to modify their performance Using a variety of feedback methods and communication are important at this stage because the athlete needs to understand the information, remember it, correct the performance and practice it. The revised technique needs to be practiced until the performance becomes automatic. Many athletes are able to self correct Modified and small-sided games The skills of the real game are utilised on modified areas of play, or using modified rules These are important training techniques as they mimic skills and tactics They can also impose certain conditions (conditional games) to practice a certain skill Games for specific outcomes Small games can be created to achieve a specific outcome eg. Defensive skills, attacking ability, creating space Provide opportunity for concentrated practice and decision making within structures that closely resemble the game situation Functional practice – address specific elements of a game causing concern Focus Question 2 What are the planning considerations for improving performance? Initial Planning Considerations Training programs need to be thoroughly planned if the potential of players and the performance of teams are to be optimised Performance and fitness needs Data is collected from previous seasons and current performances to develop effective programs This becomes the basis of developing individual and team considerations Eg individual – physical fitness, skills Team – team goals, leadership(captain) Schedule of events/competitions Careful consideration needed to avoid over-committing athletes and inhibiting performance. Data needs to be analysed such as main competitions, area and national championships etc, to pace training programs and performance. Climate and season Initial planning needs to consider seasonal variations together with climatic influences Heat, wind, rain, cold, fog and humidity are examples of climatic considerations Clothing and attire must address these issues. Planning a training year phases of Competition Many athletes train all year to maintain fitness Periodisation: the dividing of a program into phases Post/Off Season/Transition Phase Aim: prevent weight gain (by modifying diet), maintain an aerobic fitness base + strength + skill level, repair injuries This is the phase in which recovery occurs. Coaches should encourage active physiological and psychological recovery. (as the principle of reversibility can have an effect on the athletes) Any injury should be managed at this stage. Involves recreational and social activities, variety is important (also in the environment) Low intensity, high volume One week total rest at the conclusion of the competition may be wise Pre Season Training/Preparation Phase 6-12 weeks before the start of the season Aim: The main aim of this phase is to reach a level of fitness that will see the athlete competing at their best with a reduction in the likelihood of injury. There should be an increase in intensity as the athlete begins with general whole-body conditioning and then progresses to sport-specific fitness work and technique is developed. High volume, moderate intensity A variety of training methods should be used incorporating endurance and power eg Fartlek + interval In Season Training/Competition Phase Aim: maintain fitness, strength + skills developed in the pre season Maintaining fitness by increasing intensity and decreasing volume Focus: gain competitive experience, tactics and strategies, mental skills Specificity and games + game-like practice is important The athletes ability to load (train) and unload (recover, regenerate) will influence the level of intensity Off Season/Transition Phase - - Physical and mental recovery from training and competition Off- season is characterised by 1 week of total rest Remaining time consisting of active rest, with training sessions and intensity decreased Change of environment Diet changes to reflect decreased load subphases Macrocycles are long term planning frameworks and may represent an entire planning program (annual plan) Mesocycles are periods of 4-8 weeks Microcycles are short term 7-10 days Mesocycles and microcycles allow for the planning of specific objectives to be achieved Peaking for Performance Peaking: phase of training in which performance is optimised to meet the demands of a race/competition, a temporary state Characteristics of peaking: High health/fitness Quick recovery from training Neuromuscular coordination self confidence/motivation Mental alertness Technical/tactical preparation is optimal Program should be organised so that physical and mental states are optimal Involves a sequential, cumulative training program Tapering Tapering: a period of reduced training immediately prior to competition, can increase the strength and power of the athlete 7-10 days is appropriate for most sports Reasons: allows tissue to rebuild, heal injuries, replace energy stores Effects differ: good in swimming, minimal for running Tapering (varies according to sport 7-14 days) involves a reduction in volume and intensity and is fundamental for allowing tissue to rebuild/heal and for the full replacement of energy/glycogen stores. Part of the inseason phase, duration depending on whether an athlete must perform every week or for a major competition. Following a high quality preparation it brings about an increase in strength and power as it takes stress of muscles, immune and nervous systems. Diet must be considered as overeating, can be a problem during tapering. Example: swimmers gain benefits by tapering for two weeks. No loss in maximal aerobic capacity if training is reduced by 60%. Those tested had a 3.1% improved performance and a 17-24% increase in arm strength. There are four variables to consider: Taper Duration - ensures training is reduced to allow recovery without loss of fitness. Research shows between 7 and 14 days caters for both. Training Volume – Research shows that reducing the volume gradually up to 60% allows the body’s tissue to recover from excess training easily and utilise energy to improve fitness parameters. Exercise Intensity – intensity remains the same but frequency or repetitions decrease therefore an improvement in performance due to less damage from training. Exercise Frequency – frequency should remain relatively stable as athletes are familiar with training at certain times. This is providing the other three variables are manipulated to prepare the athlete for optimal performance. How to Prevent Overtraining: Athletes and coaches should be aware, recognise it early and take the appropriate rest. Coaches should also be considering: Increase training loads gradually Periodisation of training must be planned throughout the year Taper the program leading into major competitions Ensure the athlete is maintaining a balanced lifestyle Adapt training to suit the environmental conditions Alternate training sessions Environmental Considerations An athletes performance can be affected by a number of environmental conditions including: Weather Altitude Pollution Altitude Altitude: height above sea level Hypoxia: lack of an adequate supply of oxygen. radiation Different conditions: air is less dense, lower humidity, lower air temperature, solar Heights > 1500m above sea level affect the body’s ability to perform physical work Aerobic capacity is reduced by 3% for every 300m ascended above 1500m In the Mexico City Olympics 1968, endurance athletes had problems with the 2290m altitude Decreased barometric pressure leads to decreased ability to take in oxygen, hence decreasing metabolism of glycogen. Max VO2 decreases due to decrease in arterial oxygen content, though at higher altitudes it is explained by a decrease in cardiac output. Lower humidity and air temperatures at altitude create temperature regulation problems and dehydration. There is less moisture in the air to absorb UV radiation. Less resistance leads to increased distances thrown. Acclimatisation Acclimatisation: The hypoxia stimulates physiological adaptations both at rest and during exercise. This is called acclimatisation Immediate response: Hyperventilation (increase ventilation) Increased cardiac output Increased blood pressure Long term adjustments: Red blood cells ^ Changes to tissue/cells Acclimatisation is a gradual process taking from 1 week to one month (depending on the altitude) The benefits are lost within 2-3 weeks after returning to sea level 3 phase process: Increase in lung ventilation Red blood cells Capillarisation of muscle cells Problem: advantages of acclimatisation are often outweighed by the reduced training volume needed to incorporate the altitude training Elements to be considered when designing a training session Health and safety considerations - - - - - Disregard for health and safety can lead to injury. Important considerations include: Injury prevention – warmup/cooldown and stretching Protective equipment – should be used during practice and games General equipment – all needs to be checked for safety Apparel – should be comfortable as well as provide protection Environmental hazards – UV protection (sunscreen, sunglasses, hats etc) Illness – virus transfer must be minimised eg water bottle use Providing an overview of the session At the beginning of a training session, it is common for a coach to provide a brief overview of what will be required in the session This ensures that the intentions of the coach and expectations of the players is channelled in the same direction. It also provides a forum for specific issues such as recording attendance, assessment of injuries, discussion of goals, tactics, discussion of previous performance Warm up and cool down - - - Effective warmups consist of Phase 1 – general body warm up until the body begins to sweat Phase 2 – stretching Phase 3 – callisthenics – general body exercises eg pushups, abdominal crunches (specific to the game) Phase 4 – skill rehearsal – performance of routines required later in the training session Skill instruction and practice - Delivery of a body of knowledge from a coach to the players Effective delivery requires good communication skills and prior organisation Effective communication is: Brief Well timed Specific Constructive Clear Informative Demonstrable conditioning It is essential to identify the most important fitness components for success and design sport-specific conditioning within training sessions that will enhance these fitness components and energy systems In most cases, general training sessions are not sufficient to develop the progression of physical conditioning During the preseason, the time allocated to conditioning should be greater than that of the in-season or transitional phases of a training program, to effectively prepare the athlete for competition evaluation Good coaching methods include evaluating the training session. It allows feedback on the effectiveness of the session and whether specific goals were met. After the evaluation session, the coach and athlete can discuss any information relating to the next training session, game or game preparation. Planning to avoid overtraining Amount and intensity of training - - - - Overtraining can occur as a result of accumulated factors which include: Inappropriate increase in the frequency of training Demands increase too rapidly which don’t allow for adaptation Too rapid increase of loading after injury Too high an intensity of duration loading in endurance training Excessive competition with maximum demand Excessive bias of training methods Physiological considerations eg lethargy, injury It is normal to suffer from fatigue or muscle discomfort during training, especially at the beginning of preseason training. Coaches and athletes must be aware that prolonged periods of training without adequate recovery can result in overtraining Physiological responses to training must be monitored, and appropriate adjustments made if the athlete is suffering from any of the following: Elevated resting pulse/HR, frequent minor infections, chronic muscle soreness, lethargy, weight loss and appetite loss, intolerance to exercise, decreased performance Psychological Preparation The Role and Use of Sports Psychologists Aim: to establish mental toughness Sports psychology: involves the study of human behaviour in sports setting and the influence of coach, athlete and environment on performance The sports psychiatrist aims to Help athletes overcome the pressures of competition Improve performance by teaching techniques for mental control and alertness Educate and teach coaches/players Psychological skills training (PST) can enhance both performance and selfconfidence. But these skills need to be practiced Focusing: staying in a controlled emotional state and concentrating on the immediate event, sometimes employs the use of cue words Centring: process that gives the athlete a feeling of being grounded, in control Positive self-talk: can help in rehearsing and correcting a skill and refocusing Relaxation Techniques Relaxation: characterised by a decrease in breathing rate, heart rate, muscle activity and oxygen consumption Anxiety: fear/apprehension as a result of a proposed threat When arousal levels are too high performance is compromised. Relaxation techniques are designed to prevent excessive arousal, decreasing the physical and mental symptoms of nervousness. Progressive muscular relaxation: tense then relax a muscle group Mental relaxation: visually tranquil experience relax the mind and body Mental rehearsal: repeat a mental picture before a performance Centred breathing: focus on breathing depth and rate Flotation: floating in water to produce a sense of calm Meditation: exclusion of surrounding interferences Sports massage: manipulating soft tissue Autogenic training: mental creation of feelings of heaviness and warmth in the muscles Biofeedback: uses instruments which measure changes in bodily functions (skin temperature, breathing, heart rate etc) Hypnosis - - Intense physical training can contribute to mental and emotional issues in athletes. By balancing motivational techniques and physical intensity, a coach can help avoid the onset of overtraining. Psychological indicators of overtraining include: fatigue, tiredness apathy or no motivation irritability anxiety depression headaches insomnia inability to relax Physiological Considerations Causes: poor diet stress sleep disorders excessive training volume/intensity Effects: insomnia Infections Resting Heart Rate increases Psychological Considerations Causes: Pressure lack of self-confidence Boredom Fear Strategies: change of environment/routine active rest mini breaks Focus Question 3 What ethical issues are related to improving performance? USE OF DRUGS The dangers of performance enhancing drugs A star athlete can earn a lot of money and receive fame and attention, and they only have a short time to do their best work. Athletes know that training is the best path to victory, but they also understand that some drugs and other practices can boost their efforts and offer a shortcut Athletes can be lured into using performance-enhancing drugs because: • winning can attract lucrative sponsorship deals and endorsements • society places great emphasis on success in sport • some banned drugs can speed recovery from injury • some athletes desire to win so much that they are willing to use any means • some coaches may push drug use to enhance an athlete’s chances of winning For strength (HGH, steroids) HGH stimulates the body’s synthesis of the proteins that form bone and muscle tissue, decreases body fat and increases testosterone levels. HGH stimulates the growth of muscle, cartilage, and bone, and so increases muscle size. It also allows tired muscles to recover quicker, which enables the athlete to train harder and more often. The side effects of using human growth hormone include: • overgrowth of hands, feet and face (acromegaly) because of the increased muscle and bone development in these parts • enlarged internal organs, especially heart, kidneys, tongue and liver • heart problems. effects of HGH and steroids For aerobic performance (EPO) Erythropoietin (EPO) is a naturally occurring protein hormone that is secreted by the kidneys during low-oxygen conditions. Endurance athletes, use EPO to increase oxygen absorption, reduce fatigue and improve endurance by increasing the rate of red cell production. It is also believed that EPO increases the metabolism and the healing process of muscles because the extra red cells carry more oxygen and nutrients. In someone who already has normal levels of red blood cells, the use of EPO can lead to increased thickening (or viscosity) of the blood causing clotting, thrombosis, heart attack and stroke. To mask other drugs (diuretics) Masking agents are prohibited as they are products that have the potential to impair the excretion of prohibited substances, to conceal their presence in urine or other samples used in doping control, or to change haematological (blood) parameters. Diuretics are classified as masking agents and can be used to control weight or mask the use of other drugs. Depressants affect concentration and coordination, and slow the response time to unexpected situations. Alcohol can have the same masking affect as a diuretic by diluting urine. Alcohol is an ergolytic aid to sports performance. This means that it will detract from, not improve, exercise performance. It is banned in: aeronautic, archery, boules, karate, modern pentathlon (disciplines involving shooting), motorcycling, tenpin bowling, powerboating. Warne recently returned a positive sample to the banned drug Moduretic, a diuretic often used by sports drug cheats to mask other prohibited substances including anabolic steroids, which are often used by sports men and women to promote rapid tissue healing after injury. Benefits and limitations of drug testing Effective drug testing programs are difficult and extremely costly to maintain. One reason is that new performance-enhancing drugs are constantly being developed. These drugs are usually produced in secret and are specifically designed to avoid detection by current testing methods. Some performance-enhancing drugs are more difficult to detect than others. Elevated levels of EPO, for instance, do not remain in the blood for long The Australian Sports Anti-Doping Authority (ASADA) is the primary anti-doping authority in Australia and, as such, is responsible for testing athletes for banned substances. Although there is limited statistical evidence on how widespread doping is, athletes and coaches stress that most competitors do not take drugs. Nonetheless, drug testing is becoming an increasingly integral part of sports competitions. Use of Technology Oscar Pistorius of South Africa was born without a fibula bone in his legs resulting in both legs being amputated below the knee Is technology going too far??? Training innovation New training innovations develop every year, with what is regarded as the latest innovation becoming outdated in a very short period of time. Coaches research, or in the case of elite athletes, have support staff to investigate the latest training methods and vices to improve athletic performance in power, distance and accuracy, and to prevent injury or aid in rehabilitation. much of the research done by the AIS is cutting-edge, and designed to give Australian athletes the best chance at international success, and so is not made available. Some examples of innovative training aids to improve performance include: clothing, compression garments, playing surfaces, testing procedures, simulated competition environments, equipment, computerised video analysis lactate threshold testing Lactate thresholds testing is an innovative method used to measure lactate levels during training by sport scientists, coaches and athletes to accurately determine heart rate training zones and recovery. Lactate is a metabolic product that can be measured by taking a drop of blood at a fingertip the same way diabetics monitor their blood sugar level. The blood lactate level increases with exercise intensity and shows clearly the transition from aerobic to anaerobic activity. The ability of the muscles to reach a peak performance during an athletic event requires that the energy systems providing energy be ‘fine tuned’ or ‘balanced’ properly so that the athlete can generate the highest amount of energy per unit of time during a race. biomechanical analysis Biomechanical analysis is another innovative method used to improve an athlete’s performance. For example, walking, running, throwing, pitching, hitting, kicking, diving and golf swing mechanics can be compared to normative data in order to pinpoint flaws in the motion; and so performance improvements can then be based on scientific evidence. Biomechanical analysis is valuable in the prevention of injuries. Data regarding joint stresses incurred during sport-specific movements, knowledge of joint mechanics and the magnitudes and rates of joint loads, provide sports medicine practitioners with the information necessary to prescribe injury prevention and rehabilitation programs. All biomechanical evaluations should be completed with two goals in mind: 1. improve performance and 2. reduce the chance of injury. Equipment advances One of the most controversial advances is that of the Speedo LZR Pulse™ swimsuit. At the beginning of 2008, the suit was worn for 9 out of 9 world records broken in the swimming pool between Jan – March of that year Characteristics of the suit that improves performance include: * constructed water repellent material reducing drag by 5% and increasing efficiency * tighter, corset-like midsection reported to reduce fatigue at the end of races and improve body shape * seamless, consisting of special panels of the repellent material further reducing drag. golf ball manufacturers have sought to create superior golf balls by varying both the materials and the patterns and combinations on the surface. as computer technologies and models are developed, manufacturing companies can develop new golf balls with new patterns, accompanied by new marketing campaigns Callaway Golf replaced traditional dimples with a hexagonal dimple pattern on their golf balls, which they claim further reduces drag for longer, more efficient ball flight.