Journal of Trainology
Online ISSN : 2186-5264
Short Communication
  • Simon Cushman, Richard Bott, Craig Twist, Jamie Highton
    2018 年 7 巻 1 号 p. 1-4
    発行日: 2018/01/25
    公開日: 2018/04/17
    ジャーナル フリー

    Objective: The purpose of this study was to establish the inter-day reliability of several performance variables measured during a 2 × 6 s sprint on a Wattbike cycle ergometer in male rugby players. Reliablilty was assessed against an ‘analytical goal’ of detecting meaningful changes that might be expected with fatigue in rugby. Design & Methods: Sixteen male rugby players performed three trials of the protocol on different days seperated by a mimimum of 48 h. The protocol comprised 2 × 6 s ‘all out’ cycle sprints with 90 s recovery between efforts. Typical error (TE), coefficient of variation (CV), smallest worthwhile change (SWC) and moderate change (MC) were calculated between each trial for seven variables. Results: Peak Power output significantly increased from the first to the third trial (3.3-4.4 %), whilst all variables had better reliability from trials 2-3 than 1-2. Mean power (3.7%), peak power (4.2%) and total distance (2.7%) had a CV% lower than dec rements observed with team sport fatigue (~5%), however only total work had a TE (2.1 kJ) lower than the smallest worthwhile change (4.6 kJ) while the remainder were lower than the moderate worthwhile change. Conclusion: Assuming one complete habituation trial is completed, total work appears to be the most reliable variable capable of detecting a worthwhile change in performance. We recommend using this variable to monitor fatigue in rugby players.

  • Robert G. Lockie, Michael Stierli, Jay Dawes J., Karly A. Cesario, Mat ...
    2018 年 7 巻 1 号 p. 5-9
    発行日: 2018/02/21
    公開日: 2018/04/17
    ジャーナル フリー

    Objectives: The aim of this study was to determine if there were differences in physical fitness performance across different cohorts of successful candidates attending law enforcement agency (LEA) training. Design and Methods: Retrospective, non-identifiable, data from three training cohorts, comprising 226 LEA candidates (♂ = 196: ♀ = 30) were analyzed. Data from a standard testing battery used to screen new candidates on entry were used to inform physi cal fitness performance. This battery included: maximal number of push-up and sit-up repetitions in 60 seconds (s); a 75-yard pursuit run (75PR) around a pre-determined course designed to mimic a foot pursuit; an arm ergometer test where candidates completed as many revolutions in 60 s; and the 2.4 kilometer (km) run. A one-way analysis of variance with Bonferroni post hoc adjustments compared age and test results across the classes. Alpha levels were set at p < 0.05 a priori. Results: There were no significant (p = 0.091-0.458) differences between the three cohorts for age, maximal number of push-ups and sit-ups completed in 60 s, time to complete the 75PR, number of revolutions completed in the 60 s arm ergometer test, or time to complete the 2.4 km run. Conclusions: The level of physical fitness for new candidates attending LEA training, as measured by the testing battery, was similar across cohorts attending training and as such physical training programs to prepare new candidates for LEA duties may not need to be different. However, trainers should be aware of individual variations in physical characteristics within classes to optimize individual gains.