The Effect of Chronotype on the Maximum Oxygen Consumption, Melatonin and Body Temperature of Young Football Players of Sanat Mes Kerman Club

Has proven to chronotype play a key role in the timing of peak athletic performance. Recent evidence suggests that accounting for these differences, known as the chronotype, leads to different daily physiological profiles. The aim of the current research was to investigate the effect of chronotype on the maximum oxygen consumption, melatonin and body temperature of the youth football players of Mes Kerman Club.

In this research, 30 male youth football players of Mes Kerman Club with an average age of 16.26 years were selected as samples. Based on the morning and evening questionnaire, the participants were divided into morning and evening types. In order to perform the incremental test on the treadmill, participants attended 3 sessions in the laboratory (at 7-9 and 6-8). Before the test, blood melatonin level and body temperature and during the test, the oxygen consumption of the participants were measured.

In the morning group, there was no significant difference between Vo2max and melatonin in the morning and evening (p>0.05), but in the evening compared to the morning, the body temperature showed a significant increase (p<0.005). In the evening group, there was no significant difference between morning and evening melatonin (p>0.05), but in the evening compared to the morning, body temperature (p<0.023) and Vo2max (p<0.001) showed a significant increase.

It seems that the chronotype affects the aerobic capacity of athletes. In people with evening-type chronotype, aerobic capacity is sometimes higher in evening physical activity hours compared to morning physical activity.