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© Georg Thieme Verlag Stuttgart · New York
Physiological Responses of Speed Skaters to Treadmill Low Walking and Cycle Ergometry
09 March 2007 (online)
Speed skaters have previously relied on cycle ergometry for physiological testing. Current evidence suggests skate-specific testing might be more appropriate. Unlike cycling, skating and off-ice low walk training involves a 'crouched' posture, placing the quadriceps in static contraction. This may compromise blood flow to working muscles and influence VO2. We compared physiological variables between skate-specific treadmill low walking (LW) and cycle ergometry (BK). Skaters (N = 8) performed LW and BK to fatigue in randomized order. No difference existed for peak HR. Peak VO2 was lower for LW (4.13 ± 0.34 vs 4.43 ± 0.35, p < 0.05). Peak VE was lower during LW (146 ± 13 vs 180 ± 31, p < 0.05). R was significantly lower for LW, although no difference in peak lactate (LA) was evident. At submaximal heart rates, VO2 was lower during LW (p < 0.05), and submaximal LA was higher when expressed as percent peak VO2 (p < 0.05). These results are consistent with the hypothesis that skating posture limits O2 delivery to the lower extremities, and thus accounts for a greater dependence upon anaerobic energy production.
Speed skating - exercise testing - VO2peak - VE - lactate