Abstract
The article discusses the factors that ensure the appropriate level. It was determined that physical capacity is the maximum mechanical work that a person is able to perform. Assessment of a person's physical capacity is necessary for solving a wide range of practical problems: determining the state of health, the results of sports training, and others.
 It has been proven that physical performance depends on many factors: body composition and anthropometric indicators, muscle strength and endurance, the state of the musculoskeletal system, functional and endocrine systems. Factors such as energy potential, completeness of its use and cost-effectiveness of movements are also important. It has been established that work capacity is ensured by both aerobic and anaerobic processes of energy generation, and according to the preference of one of them, aerobic physical work capacity, anaerobic and mixed are distinguished.
 Despite the fact that the indicators of physical development of student youth show positive dynamics, the general state of health of modern youth is deteriorating, which negatively affects their physical and mental capacity. The most acute social problem in Ukraine is the deterioration of the health of children and youth. Negative factors that reduce the level of health are improper nutrition, hypokinesia, psycho-emotional overstrain, and bad habits.
 Effective means of improving not only physical, but also emotional health of a person include aqua fitness. Nowadays, there is no doubt about the possibility of a positive effect of physical exercises in water on the state of physical and mental health, improving the activity of the cardiovascular, respiratory, and hormonal systems and developing the physical qualities of a person.
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More From: Scientific Journal of National Pedagogical Dragomanov University. Series 15. Scientific and pedagogical problems of physical culture (physical culture and sports)
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