Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2011) 10, 376 - 384

Research article
Field-Based Pre-Cooling for On-Court Tennis Conditioning Training in the Heat
Rob Duffield1, , Stephen P. Bird1,2, Robert J. Ballard2,3
Author Information
1 Exercise and Sports Science Laboratories, School of Human Movement Studies, Charles Sturt University, Bathurst NSW, Australia
2 Sports Science Division, Program Atlet Andalan, Menteri Negara Pemuda dan Olahraga, Jakarta Indonesia
3 Persatuan Tenis Seluruh Indonesia (Tennis Indonesia), Komplek Gelora Bung Karno, Jakarta Indonesia

Rob Duffield
✉ School of Human Movement Studies, Charles Sturt University Panorama Ave, Bathurst, NSW, Australia, 2795
Email: rduffield@csu.edu.au
Publish Date
Received: 20-12-2010
Accepted: 07-04-2011
Published (online): 01-06-2011
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ABSTRACT

The present study investigated the effects of pre-cooling for on- court, tennis-specific conditioning training in the heat. Eight highly-trained tennis players performed two on-court conditioning sessions in 35°C, 55% Relative Humidity. Sessions were randomised, involved either a pre-cooling or control session, and consisted of 30-min of court- based, tennis movement drills. Pre-cooling involved 20-min of an ice-vest and cold towels to the head/neck and legs, followed by warm-up in a cold compression garment. On-court movement distance was recorded by 1Hz Global Positioning Satellite (GPS) devices, while core temperature, heart rate and perceptual exertion and thermal stress were also recorded throughout the session. Additionally, mass and lower-body peak power during repeated counter-movement jumps were measured before and after each session. No significant performance differences were evident between conditions, although a moderate-large effect (d = 0.7-1.0; p > 0.05) was evident for total (2989 ± 256 v 2870 ± 159m) and high-intensity (805 ± 340 v 629 ± 265m) distance covered following pre-cooling. Further, no significant differences were evident between conditions for rise in core temperature (1.9 ± 0.4 v 2. 2 ± 0.4°C; d > 0.9; p > 0.05), although a significantly smaller change in mass (0.9 ± 0.3 v 1. 3 ± 0.3kg; p < 0.05) was present following pre-cooling. Perceived thermal stress and exertion were significantly lower (d > 1.0; p < 0.05) during the cooling session. Finally, lower-body peak power did not differ between conditions before or after training (d < 0.3; p > 0.05). Conclusions: Despite trends for lowered physiological load and increased distances covered following cooling, the observed responses were not significantly different or as explicit as previously reported laboratory-based pre-cooling research.

Key words: Cooling, heat, training, GPS, racquet sports


           Key Points
  • Pre-cooling did not significantly enhance training performance or reduce physiological load for tennis training in the heat, although trends indicate some benefits for both.
  • Pre-cooling can reduce perceptual strain of on-court tennis training in the heat to improve perceptual load of training sessions.
  • Court-side pre-cooling may not be of sufficient volume to invoke large physiological changes.
 
 
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