EFFECTS OF FOOTBALL TRAINING ON VENTILATORY AND GAS-EXCHANGE KINETICSTO SINUSOIDAL WORK LOAD

The purpose of this study was to evaluate the effects of football trai ning on maximal oxygen uptake ((V) over dot O(2)max), ventilatory thre shold (VT) and kinetics of ventilation and gas exchange variables to s inusoidal work load, The sinusoidal work load during cycling exercise was varied from 30 watts to 60% of (V) over dot O(2)max (60% (V) over dot O(2)max) with a period of 2 min, O-2 uptake ((V) over dot O-2), CO 2 output ((V) over dot CO2), minute ventilation ((V) over dot E) and h eart rate (HR) were measured on a breath-by-breath basis using a compu ter system, Training periods were continued for 9 months, Six males wh o had no football experience were performed in which (V) over dot O(2) max, VT, and the kinetics of each variable were measured for 3-month i ntervals (PRE, TR.3, TR.6, and TR.9), They usually underwent football training, such as sprint and strength training for 2-3 hours day(-1), 6 days week(-1), Mean (V) over dot O(2)max was significantly increased at TR.3 and TR.6, VT was also significantly increased during the trai ning period, The amplitude of (V) over dot O-2, (V) over dot CO2, (V) over dot E, and HR responses during sinusoidal exercise unchanged duri ng the training period, Phase shifts to work load in (V) over dot O-2 and HR responses did not significantly change during the 9 months, but the phase shift in (V) over dot CO2 and (V) over dot E responses sign ificantly continued increasing as the training intervals progressed, T hese results suggest that football training does not significantly aff ect the development of the kinetics of (V) over dot O-2 and HR during submaximal exercise, but that it dramatically increases (V) over dot O (2)max and VT values.