Abstract
Standing and seated position are used in Cycling. On level surface, seated position is selected and as the angle of inclination gradually increased, cyclists select standing position. However, when a constant inclination continues, two positions are often alternately switched. The aim of this study was to examine the influence of the posture selection (seated, standing and switching two postures) on uphill cycling. Trained cyclists participated in eight randomized sub maximal 4-min cycling bout on mortar-driven treadmill. Surface incline of treadmill were 5 and 7%. Additionally, they pedaled four posture condition, seated (SEA), standing (STA), and switched positions high frequency (10-sec: HF) and low frequency (30-sec: LF). Oxygen consumption during 4-min cycling and blood lactate concentration immediately after each bout were measured. Cycling on 5% incline, oxygen consumptions during STA, HF and LF were significantly higher than SEA. But, blood lactate concentration of HF was lowest, significantly difference was observed between SEA and STA. Our results suggest that the switching posture lower blood lactate concentration during uphill cycling.
