Publication Details
Hoyne, Z.,
Cripps, A.,
Mosler, A. B.,
Joyce, C.,
Chivers, P.,
Chipchase, R.,
&
Murphy, M.
(2022).
Self-reported throwing volumes are not a valid tool for monitoring throwing loads in elite Australian cricket players: An observational cohort study.
Journal of Science and Medicine in Sport,.
Abstract
Objectives
To determine the concurrent validity of player self-reported and independently observed throwing volume. Examine whether sex, playing position, or time to upload self-reported data post training influences the accuracy of self-reported throwing loads.
Design
Cross-sectional cohort study.
Methods
A total of 8 female and 18 male elite cricket players participated in the study. Overarm throws from 12 training sessions during the 2020–21 cricket year were observed. Player self-reported throwing volume data were retrieved post training, with the time difference between session completion and self-reported data upload recorded.
Results
A moderate positive correlation was found between self-reported and observed throwing loads (rho = 0.65), however only 22 % of players reported values within a 10 % level of error. Players reported a mean (SD) absolute inaccuracy of 11.17 (9.77) throws, and a mean (SD) relative inaccuracy of 24.76 (16.04) percent. Sex did not influence reporting accuracy (p = 0.41). Females tended to upload self-reported data the day of training, whereas men report the day following. Players who uploaded their data greater than one day after training were the most inaccurate with a mean relative inaccuracy of 36 %.
Conclusions
While there is a clear relationship between observed and self-reported throwing volumes, the findings of this study question the validity of using player self-reported throwing load as a marker of true throwing loads with most players recording in excess of 10 % error. High performance staff and players should consider whether the current accuracy of self-reported throwing load justifies the additional reporting burden on the players during training.
Keywords
Ball sports, Injury prevention, Load management, Load monitoring, Shoulder
