Quantification of maximal power output in well-trained cyclists期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Quantification of maximal power output in well-trained cyclists

Authors:	Thomas A Wackwitz Clare L Minahan Trish King Chantelle Du Plessis Mark H Andrews Phillip M Bellinger

Institution:	1. Griffith Sports Physiology and Performance, School of Allied Health Sciences, Griffith University , Gold Coast, Australia;2. Performance Science Unit, Queensland Academy of Sport , Nathan, Australia thomas.wackwitz@griffithuni.edu.au;4. Griffith Sports Physiology and Performance, School of Allied Health Sciences, Griffith University , Gold Coast, Australia;5. Performance Science Unit, Queensland Academy of Sport , Nathan, Australia https://orcid.org/0000-0003-2700-3140;6. Performance Science Unit, Queensland Academy of Sport , Nathan, Australia

Abstract:	ABSTRACT This study aimed to compare mechanical variables derived from torque-cadence and power-cadence profiles established from different cycle ergometer modes (isoinertial and isokinetic) and modelling procedures (second- and third-order polynomials), whilst employing a novel method to validate the theoretical maximal power output (P_max). Nineteen well-trained cyclists (n = 12 males) completed two experimental sessions comprising six, 6-s maximal isoinertial or isokinetic cycling sprints. Maximal pedal strokes were extracted to construct power–cadence relationships using second- and third-order polynomials. A 6-s sprint at the optimal cadence (F_opt) or optimal resistance (T_opt) was performed to assess construct validity of P_max. No differences were found in the mechanical parameters when derived from isokinetic (P_max = 1311 ± 415, F_opt = 118 ± 12) or isoinertial modes (P_max = 1320 ± 421, F_opt = 116 ± 19). However, R² improved (P < 0.02) when derived from isoinertial sprints. Third-order polynomial modelling improved goodness of fit values (Standard Error, adjusted R²), but derived similar mechanical parameters. Finally, peak power output during the optimised sprint did not significantly differ from the theoretical P_max in both cycling modes, thus providing construct validity. The most accurate P-C profile can be derived from isoinertial cycling sprints, modelled using third-order polynomial equations.

Keywords:	Isokinetic isoinertial power-cadence ergometer mode modelling procedures

设为首页 | 免责声明 | 关于勤云 | 加入收藏