G-41 Free Communication/Poster - Sports Biomechanics Saturday, May 30, 2015, 7:30 AM - 11:00 AM Room: Exhibit Hall F
PURPOSE: The aim of this investigation was to provide insight and understanding regarding the scientific nature of track cycling.
METHODS: Twelve well-trained male cyclists (20±1 yr, 178±5 cm, 78±8 kg) from Shanghai Track Cycling Team were recruited as participants. We developed SRM Schoberer Rad Messtechnik, Welldorf, Germany) and Footscan Pressure Insoles (100 Hz, RSscan, Belgium) synchronous measurement system. It was used to investigate 60m and 500m (standing start; S60 and S500), 200m (flying start; F200) all-out riding characteristics in the 333.3 m track stadium respectively. Pedal force (PF) = 60P/2πrC (N), where P is power output, r is crank arm length (m), and C is the angular velocity of crank rotation (r/min).
RESULTS: (1) The S60 average power output, 1111±73 W, was greater than that of the S500 and F200, 837±65 W, 819±106 W, respectively, (p < 0.01); the S60 average pedal force, 927±44 N, was significantly greater than that of S500 and F200, 441±27 N, 356±41 N, respectively, (p < 0.01); the S60 left and right average peak insole pressure, 708±59 N, 732±73 N, respectively, were significantly greater than that of F200, 562±57, 547±71 N, respectively (p<0.01), but no significant difference with that of S500, 688±6, 692±3 N. (2) Average velocity during S60, 33±2 km/h was significantly less than that of S500 and F200, 49±1 km/h, 58±1 km/h, respectively, (p < 0.01); average cadence during S60, 69±3 rpm was significantly less than that of S500 and F200, 110±3 rpm, 133±3 rpm, respectively (p<0.01). The results indicate that greater cycling velocity and cadence was accompanied with lower pedal force for track cyclists.
CONCLUSIONS: The SRM and Footscan Pressure Insoles synchronous measurement system offers better method of investigating the characterization of power output, velocity, pedal force and cadence during track cycling. The results of our study provide information that could be useful for track cycling athletes and coaches in the prescription of training regimens and adoption of exercise protocols.