Vol. 4, Issue 5 (2019)
Sweat rate of some professional football players during routine practice in a hot humid environment in Yenagoa, Bayelsa State, Nigeria
Author(s): Justice Patani Akpotu, Hamilton C Opurum, Kenneth C Anugweje, Datonye Victor Dapper
Abstract: Training in hot and humid environments has profound effects on physical and health status of athletes. This study was aimed at evaluating the sweat rate of male and female professional football players in Yenagoa, a hot humid environment in Bayelsa State, Nigeria.120 participants were evaluated, consisting of 30 male and 30 female professional football players and 30 male and 30 female ‘‘active persons’’ who served as control. Sweat rate was calculated using the difference in pre and post exercise body weight adjusted for fluid intake and urine output during training. Fluid intake and urine output were monitored and recorded during the training period at 31.10C mean atmospheric temperature and 68% relative humidity. Mean value of quantitative data was compared at a significant level of p<0.05. Mean sweat rate was 2.14±0.04 litres/hour in male football players, 1.54±0.04 litres/hour in female football players, 1.32±0.04 litres/hour in male active persons and 0.98±0.03 litres/hour in female active persons. The sweat rate of male football players was significantly higher than that of male active persons. Similarly, sweat rate of female football players was significantly higher than that of the female active persons. Linear multiple regression model showed mean sweat rate was significantly higher in males than females [β = -0.25; p=0.01] and to significantly increase with increasing body surface area [β= 0.31; p=0.002] but significantly decreases with increasing age (β= -0.42; p= 0.001). Football players studied have a substantially high sweat rate which can predispose them to becoming dehydrated if sweat lost during training/competition is not properly replaced. Therefore, football players, team physicians and club administrators need to ensure proper replacement of lost fluids and prevent possible dehydration during exercise and competitions.