The effect of two days acute fasting with and without physical activity on stress, emotions, motor function and cognition in young women

Problem: Based on growing interest of various exercise-fasting strategies among young women, there is insufficient data on how short-term fasting with and without exercise can affect cognitive function and balance (Solianik et al., 2016). Aim: to examine and compare the effects of two days of fasting and fasting with exercise on young women 's stress, psychoemotional state, motor and cognitive function. Hyphotesis: Based on previous research (Trepanowski et al., 2017; Solianik et al., 2020), we believe that after two days of fasting due to stress, cognitive function and balance will deteriorate and the risk of injury will increase, and additional physical activity, due to the cumulative effects of stress , cognitive function and balance will deteriorate even more. Tasks: to assess and compare in young women changes in (1) energy materials, (2) cognitive function, (3) psychoemotional state, (4) change in balance after two days of fasting without exercise and with exercise. Methods: 10 young women 34.6 ± 5.7 years old, attended in a two-day fast without exercise, a two-day fast with exercise, and in a control group. Changes in weight, glucose and ketone concentration levels, cognitive function and psychoemotional state, balance, and cardiovascular autonomic function were assessed. Results: fasting and fasting with exercise interventions significantly (P <0.05) reduced body weight, glucose concentration, and increased ketone levels, but had no effect on cognitive function and balance. Both interventions (P