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Reasoning of dissertation topic and competency of potential supervisor for admission onto joint LSU and TU doctoral studies in 2014 Area of research (title and code) Field of research (title and code) Topic of research Institution Biomedical sciences Biology (01B) Hyperthermia, hypothermia, and efficiency of motor and cognitive systems LSU Potential supervisor Pedagogical and Name, surname scientific degree Assoc. Prof., dr. Marius Brazaitis Academic position Senior researcher Short reasoning of proposed dissertation topic Title Effects of the induced evening thermal stress for nightly – morning and morning functional efficiency of neuromuscular and cognitive systems. Summary (relevance, hypothesis, methodology, not more than 2000 symbols) In the scientific literature thermal stress effect is described as a muscular relaxant and a central nervous system inhibitory (Lee et al., 2012; Sutkowy et al., 2013). It has already been found that taking ordinary sauna (3 times x 20 min with 10 min break; 80–90oC; 30% environment relative humidity) internal body (rectal) temperature is increasing and reaching >39oC (Sohar et al., 1976). This body temperature is described as a high physiological thermal stress (hyperthermia) (Moran et al., 1998, 1999; Brazaitis et al., 2012), which worsens function of cognitive system (Racinais et al., 2008) and reduces central activation of working muscles (Nybo and Nielsen, 2001; Racinais et al., 2008; Brazaitis et al., 2012). Residual effect of thermal stress (all body hyperthermia) for neuromuscular and cognitive systems functional efficiency is still not investigated. So it is not clear how in the evening induced thermal stress (hyperthermia) by sauna session will effect morning and nightly – morning mental work capacity, cognitive and neuromuscular systems functional efficiency, and changes of stress hormones. Working hypothesis is in the evening induced hyperthermia will worsen nightly mental work capacity and significantly reduce concentration of stress hormones (cortisol and catecholamines) in the blood because of that the strength of electric impulses from brain and spinal cord will be weaker, spread duration will be longer, moreover resistance to fatigue will reduce, attentions and memory will be worse. Results of this research will be useful for people whose operating activities are related with making decisions, focusing attention, memory and manual labour. Currently I am supervisor of _3_ doctoral students. Marius Brazaitis Supervisor (signature) Date (Name, surname)