Effects of mixed-method cooling on recovery of medium-fast bowling performance in hot conditions on consecutive days

Minett, Geoffrey M., Duffield, Rob, Kellett, Aaron, & Portus, Marc (2012) Effects of mixed-method cooling on recovery of medium-fast bowling performance in hot conditions on consecutive days. Journal of Sports Sciences, 30(13), pp. 1387-1396.

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This investigation examined physiological and performance effects of cooling on recovery of medium-fast bowlers in the heat. Eight, medium-fast bowlers completed two randomised trials, involving two sessions completed on consecutive days (Session 1: 10-overs and Session 2: 4-overs) in 31 ± 3°C and 55 ± 17% relative humidity. Recovery interventions were administered for 20 min (mixed-method cooling vs. control) after Session 1. Measures included bowling performance (ball speed, accuracy, run-up speeds), physical demands (global positioning system, counter-movement jump), physiological (heart rate, core temperature, skin temperature, sweat loss), biochemical (creatine kinase, C-reactive protein) and perceptual variables (perceived exertion, thermal sensation, muscle soreness). Mean ball speed was higher after cooling in Session 2 (118.9 ± 8.1 vs. 115.5 ± 8.6 km · h−1; P = 0.001; d = 0.67), reducing declines in ball speed between sessions (0.24 vs. −3.18 km · h−1; P = 0.03; d = 1.80). Large effects indicated higher accuracy in Session 2 after cooling (46.0 ± 11.2 vs. 39.4 ± 8.6 arbitrary units [AU]; P = 0.13; d = 0.93) without affecting total run-up speed (19.0 ± 3.1 vs. 19.0 ± 2.5 km · h−1; P = 0.97; d = 0.01). Cooling reduced core temperature, skin temperature and thermal sensation throughout the intervention (P = 0.001–0.05; d = 1.31–5.78) and attenuated creatine kinase (P = 0.04; d = 0.56) and muscle soreness at 24-h (P = 0.03; d = 2.05). Accordingly, mixed-method cooling can reduce thermal strain after a 10-over spell and improve markers of muscular damage and discomfort alongside maintained medium-fast bowling performance on consecutive days in hot conditions.

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ID Code: 55366
Item Type: Journal Article
Refereed: Yes
Keywords: cricket, post-exercise cooling, recovery, thermoregulation, heat stress, fatigue, team-sports
DOI: 10.1080/02640414.2012.709267
ISSN: 0264-0414
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
Copyright Owner: Copyright 2012 Taylor & Francis
Copyright Statement: This is a preprint of an article submitted for consideration in the Journal of Sports Sciences © 2012 [copyright Taylor & Francis]; Journal of Sports Sciences is available online at: www.tandfonline.com
Deposited On: 11 Dec 2012 00:46
Last Modified: 05 Aug 2013 15:48

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