title: Variability in Laboratory vs. Field Testing of Peak Power, Torque, and Time of Peak Power Production Among Elite Bicycle Motocross Cyclists.
abstract: The aim of this study was to ascertain the variation in elite male bicycle motocross (BMX) cyclists' peak power, torque, and time of power production during laboratory and field-based testing. Eight elite male BMX riders volunteered for the study, and each rider completed 3 maximal sprints using both a Schoberer Rad Messtechnik (SRM) ergometer in the laboratory and a portable SRM power meter on an Olympic standard indoor BMX track. The results revealed a significantly higher peak power (p ≤ 0.001, 34 ± 9%) and reduced time of power production (p ≤ 0.001, 105 ± 24%) in the field tests when compared with laboratory-derived values. Torque was also reported to be lower in the laboratory tests but not to an accepted level of significance (p = 0.182, 6 ± 8%). These results suggest that field-based testing may be a more effective and accurate measure of a BMX rider's peak power, torque, and time of power production.
authors: 1College of Life and Natural Sciences, Derbyshire, United Kingdom; 2Faculty of Education, Community and Leisure, Liverpool John Moores University, Liverpool, United Kingdom; and 3Division of Sport, Exercise and Nutritional Science, University of Central Lancashire, Preston, United Kingdom.
authors: Lee P
authors: LP
authors: Rylands
authors: Simon J
authors: SJ
authors: Roberts
authors: Howard T
authors: HT
authors: Hurst
mesh_terms: D001642:Bicycling / Q000502:physiology*; D016552:Ergometry; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology*; D013997:Time Factors; D019415:Torque; D055815:Young Adult