85 research outputs found

    The physiological, perceptual and neuromuscular responses of team sport athletes to a running and cycling high intensity interval training session

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    This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s00421-022-05053-8Purpose: The acute physiological, perceptual and neuromuscular responses to volume-matched running and cycling high intensity interval training (HIIT) were studied in team sport athletes. Methods: In a randomized cross-over design, 11 male team sport players completed 3 x 6 min (with 5 min between sets) repeated efforts of 15 s exercising at 120% speed (s"V" ̇O2max) or power (p"V" ̇O2max) at VO2max followed by 15 s passive recovery on a treadmill or cycle ergometer, respectively. Results: Absolute mean "V" ̇O2 (ES [95%CI] = 1.46 [0.47-2.34], p 90% VO2max during the HIIT was higher for running compared to cycling (ES [95%CI] = 1.21 [0.26-2.07], p = 0.015). Overall differential RPE (dRPE) (ES [95%CI] = 0.55 [-0.32-1.38], p = 0.094) and legs dRPE (ES [95%CI] = -0.65 [-1.48-0.23], p = 0.111) were similar whereas breathing dRPE (ES [95%CI] = 1.01 [0.08-1.85], p = 0.012) was higher for running. Maximal isometric knee extension force was unchanged after running (ES [95%CI] = -0.04 [-0.80-0.8], p = 0.726) compared to a moderate reduction after cycling (ES [95%CI] = -1.17 [-2.02- -0.22], p = 0.001). Conclusion: Cycling HIIT in team sport athletes is unlikely to meet the requirements for improving run-specific metabolic adaptation but might offer a greater lower limb neuromuscular load

    A reliable testing battery for assessing physical qualities of elite academy rugby league players

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    This is a non-final version of an article published in final form in Dobbin, N., Hunwicks, R., Highton, J., & Twist, C. (2017). A reliable testing battery for assessing physical qualities of elite academy rugby league players. Journal of Strength and Conditioning Research, 32(11), 3232–3238. DOI: 10.1519/JSC.0000000000002280This study assessed the inter-day reliability of a testing battery for the assessment of physical qualities of rugby league players. Fifty players (age 17.1 ± 1.1 years; stature 181.3 ± 6.3 cm; body mass 89.0 ± 11.6 kg) from three Super League academies participated in this study. Tests of countermovement jump performance, 10 and 20 m sprint performance, change of direction, medicine ball throw and a modified Yo-Yo Intermittent Recovery Test Level 1 (prone Yo-Yo IR1) were completed on three separate occasions. Between-day intraclass correlation coefficient, typical error (TE), coefficient of variation (CV) and the smallest worthwhile change (SWC) were calculated to determine the reliability and sensitivity of each measure. Individual tests (except medicine ball throw) were not systematically different between trials (P>0.05), with an inter-day variability that was <10%. In all instances, the TE was larger than the calculated SWC change although variability was less than that typically observed after a training intervention or specific training period (i.e. preseason). Using a magnitude-based inference approach, we present the required change for all performance tests to be 75% confident the change is beneficial. This simple and time efficient testing battery is sufficiently reliable to detect previously observed changes in a range of physical qualities of rugby league players
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