Effect of cadence, cycling experience, and aerobic power on delta efficiency during cycling.

摘要: ABSTRACTMARSH, A. P., P. E. MARTIN, and K. O. FOLEY. Effect of cadence, cycling experience, aerobic power on delta efficiency duringcycling. Med. Sci. Sports Exerc., Vol. 32, No. 9, pp. 1630–1634, 2000. Purpose: To examine the influence cyclingexperience, during to determine significance as a factorunderlying selection preferred cadence. Methods: Delta (DE) was determined for 11 trained experienced cyclists (C),10 runners (R), 10 less-trained noncyclists (LT) at 50, 65, 80, 95, 110 rpm. Preferred cadence (PC) determinedat 100, 150, 200 W C R 75, 150 LT. Gas exchange each output (PO) measured ona separate day, five cadences were randomly ordered occasion. It hypothesized that: a) are most efficientat higher which they accustomed training racing, i.e., there will be trend DE increase with increasesin cadence; b) exhibit similar across range tested; c) subjects willbe lower than that runners. Results: PCs did not change appreciably PO (100 W: C,95.6 6 10.8; R, 92.0 8.5: C, 94.4 10.3; 92.9 7.8: 92.2 7.2; 91.8 7.9 rpm). The PC LT wassignificantly decreased increases in (75 80.0 15.3; 100 77.5 15.1; 69.1 11.9 rpm).The first hypothesis rejected because analysis cyclists’ data alone revealed no systematic wasincreased [F(4,40) 5 0.272, P 0.894]. Repeated measures ANOVA all three groups group 3 interaction[F(8,112) 0.589, 0.785]. Again effect [F(4,112) 1.058, 0.381]. secondand third hypotheses also since main effect, cyclists, runners, subjectswere significantly different [F(2,28) 1.397, 0.264]. Conclusion: Pedaling have dramatic DEin any group. Muscular efficiency, indirectly by appears remain relatively constant approximately24%, regardless experience or fitness level. Key Words: BICYCLING, HUMAN EFFICIENCY, CYCLING EXPERI-ENCE, TRAINING, FITNESS