Abstract

ABSTRACTThe purpose of this investigation was to examine the ability of a windload simulator reproduce the resistive forces faced by a cyclist during on-road training. The simulator consisted of a multivaned fan enclosed in a ported housing. The level of resistance could be augmented by increasing the port opening. The oxygen consumption (JOURNAL/jscr/04.02/00124278-199002000-00002/ENTITY_OV0312/v/2017-07-20T235110Z/r/image-pngO2) of five healthy male subjects was measured under steady state condition at speeds of 16.1, 24.1 and 32.2 km per hour at three intake port openings (1/4, 1/2 and 3/4 open) for each speed. The results were compared to previously reported predicted and actual on-road oxygen consumption values. Two-way ANOVA showed that increaes in speed and opening elicited significant increases in VO2; and a singnificant interaction existed between speed and opening. Post hoc comparisons of JOURNAL/jscr/04.02/00124278-199002000-00002/ENTITY_OV0312/v/2017-07-20T235110Z/r/image-pngO2 showed all speeds and openings to be different (p < 0.05). When compared with previously reported on-road values, the resistance settings on the windload simulator showed the ability to produce differing levels of JOURNAL/jscr/04.02/00124278-199002000-00002/ENTITY_OV0312/v/2017-07-20T235110Z/r/image-pngO2 within the ranges of those encountered during on-road traning. The results indicate that the windload trainer can accurately reproduce resistive forces within the range of actual on-road training.

The purpose of this investigation was to examine the ability of a windload simulator reproduce the resistive forces faced by a cyclist during on-road training. The simulator consisted of a multivaned fan enclosed in a ported housing. The level of resistance could be augmented by increasing the port opening. The oxygen consumption (JOURNAL/jscr/04.02/00124278-199002000-00002/ENTITY_OV0312/v/2017-07-20T235110Z/r/image-pngO2) of five healthy male subjects was measured under steady state condition at speeds of 16.1, 24.1 and 32.2 km per hour at three intake port openings (1/4, 1/2 and 3/4 open) for each speed. The results were compared to previously reported predicted and actual on-road oxygen consumption values. Two-way ANOVA showed that increaes in speed and opening elicited significant increases in VO2; and a singnificant interaction existed between speed and opening. Post hoc comparisons of JOURNAL/jscr/04.02/00124278-199002000-00002/ENTITY_OV0312/v/2017-07-20T235110Z/r/image-pngO2 showed all speeds and openings to be different (p < 0.05). When compared with previously reported on-road values, the resistance settings on the windload simulator showed the ability to produce differing levels of JOURNAL/jscr/04.02/00124278-199002000-00002/ENTITY_OV0312/v/2017-07-20T235110Z/r/image-pngO2 within the ranges of those encountered during on-road traning. The results indicate that the windload trainer can accurately reproduce resistive forces within the range of actual on-road training.

© 1990 National Strength and Conditioning Association