Download H2OWESOME

H2OWESOME
Round IV
Kelsey, Alex, and Michael
Body Water Levels
 Euhydration
 Overhydration (hyperhydration)
 Dehydration
Euhydration
 “Normal” body water levels
 Males – 55-60%
 Females – 50-55%
 Maintained relatively well due to thirst and hunger
(for people who can satisfy each)
 Impossible to set general requirements
for hydration
Euhydration
 Properly regulates body temperature
 Sustains proper cardiovascular function
 Maintains effective nutrient delivery
 Cell homeostasis
 Proper blood viscosity and plasma levels
Overhydration (hyperhydration)
 Body contains too much water – water intoxication
 Cannot excrete water – normal sodium level diluted [hyponatrimia]
 Rarely occurs from water consumption alone
 With normal heart, kidney, and pituitary gland function, individual would need to
consume an excess of two gallons of water a day.
Symptoms of Overhydration
 The brain is most susceptible to overhydration
 Change in behavior
 Confused
 Drowsy
 Inattentive
 Nausea/vomiting
 Acidosis – abnormally high acid content in blood
and body tissue
 Anemia
Risk Factors for Overhydration
 Most common with individuals with impaired kidney function
 Infants at greater risk due to lack of kidney development
 Often occurs in healthcare field when provider administers more fluids than body can
handle due to condition.
 Coma
 Kidney failure
 Heart disease
 Uncontrolled diabetes
Prevent Overhydration
 Take weight after bouts of intense physical activity to replenish proper amounts of fluid.
 1 lb lost – replenish with 15 oz. water
 Avoid drinking more than 1 liter of water per hour
 Be aware of medical conditions and treatments
Dehydration
 Loss of body fluids (mainly water) exceeds
amount taken in.
 Lose water in a variety of ways
 Potty breaks
 Sweat – includes body water and electrolytes
 Breathing
 Rate at which we lose water varies from
person to person
Symptoms of Dehydration
 Weakness/fatigue
 Headache
 Dry mouth
 Dizziness
 Fever
 Inability to sweat
More Symptoms of Dehydration
 Increased body temperature
 Increased heart rate
 For each liter of sweat loss, heart rate increase
8 beats per minute
 Decrease in cardiac output
 For each liter of sweat loss, cardiac output decreases
1 liter per minute
 Decreased efficiency of nutrient delivery
 Decreased blood plasma volume
Risk Factors for Dehydration
 Chronic or acute illness/disease
 Consumption of diuretics
 Bouts of exercise
 Heat exposure
 Poor diet
Prevent Dehydration
 Take weight after bouts of intense physical activity to replenish proper amounts of fluid.
 1 lb lost – replenish with 15 oz. water
 Hydrate properly prior to exercise
 Combination of water and electrolyte rich drinks
 Avoid exercise in high heat
 Replenish fluids during and after exercise
 Monitor urine color – pale yellow to clear = euhydration
dark yellow = dehydration
Sources...
 Exercise Phys. Text Book
 http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/water_a_vital_nutrient
 http://www.webmd.com/a-to-z-guides/dehydration-adults?page=3#5
 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2908954/
 http://www.dtic.mil/dtic/tr/fulltext/u2/a559016.pdf