title: Mechanically braked Wingate powers: agreement between SRM, corrected and conventional methods of measurement.
abstract: In this study, we assessed the agreement between the powers recorded during a 30 s upper-body Wingate test using three different methods. Fifty-six men completed a single test on a Monark 814E mechanically braked ergometer fitted with a Schoberer Rad Messtechnik (SRM) powermeter. A commercial software package (Wingate test kit version 2.21, Cranlea, UK) was used to calculate conventional and corrected (with accelerative forces) values of power based on a resistive load (5% body mass) and flywheel velocity. The SRM calculated powers based on torque (measured at the crank arm) and crank rate. Values for peak 1 and 5 s power and mean 30 s power were measured. No significant differences (P >0.05) were found between the three methods for 30 s power values. However, the corrected values for peak 1 and 5 s power were 36 and 23% higher (P <0.05) respectively than those for the conventional method, and 27 and 16% higher (P <0.05) respectively than those for the SRM method. The conventional and SRM values for peak 1 and 5 s power were similar (P >0.05). Power values recorded using each method were influenced by sample time (P <0.05). Our results suggest that these three measures of power are similar when sampled over 30 s, but discrepancies occur when the sample time is reduced to either 1 or 5 s.
authors.affiliation: Deanery of Sciences and Social Sciences, Liverpool Hope University College, Liverpool, UK.
authors.forename: James
authors.initials: J
authors.lastname: Balmer
authors.forename: Steve
authors.initials: S
authors.lastname: Bird
authors.forename: R C Richard
authors.initials: RC
authors.lastname: Davison
authors.forename: Mike
authors.initials: M
authors.lastname: Doherty
authors.forename: Paul
authors.initials: P
authors.lastname: Smith
mesh_terms: D015308:Anaerobic Threshold; D001696:Biomechanical Phenomena; D004734:Energy Metabolism; D016552:Ergometry; D005080:Exercise Test; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology*; D012984:Software; D019415:Torque