Browsing by Author "Klippel, Nathan John."

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The effects of hip angle manipulation on submaximal oxygen consumption in collegiate cyclists
(Montana State University - Bozeman, College of Education, Health & Human Development, 2004) Klippel, Nathan John.; Chairperson, Graduate Committee: Daniel P. Heil
The purpose of this study was to determine the effects of hip angle (HA) manipulation on submaximal oxygen consumption (VO2SUB) in collegiate cyclists. Sixteen collegiate cyclists (Mean±SD; 23.3±3.5 years; 73.3±5.9 kg body mass; 4.54±0.34 L/min VO2MAX) were tested in five positions, each resulting in a different HA, on a cycling ergometer. The positions tested were centered around the mean HA corresponding to each cyclist's preferred position (P0), defined as the combination of trunk angle (TA) and seat tube angle (STA) in which each cyclist self-reported spending most of their time training on a bicycle. The five positions tested were the cyclist's P0 and positions resulting in mean HA's of +10°, +5°, -5°, and -10° relative to their P₀. All cyclists were tested in each of the positions at a power output corresponding to 85% of ventilatory threshold. Sagittal-view kinematics for mean HA, TA, knee angle (KA) and ankle angle (AA) were recorded to confirm that HA was the only positional measurement being manipulated. Kinematic measures confirmed that mean TA, KA, and AA were not significantly different (P>0.05).