TY  - JOUR
PY  - 2018//
TI  - Heat stress incident prevalence and tennis matchplay performance at the Australian Open
JO  - Journal of science and medicine in sport
A1  - Smith, Matthew T.
A1  - Reid, Machar
A1  - Kovalchik, Stephanie
A1  - Woods, Tim O.
A1  - Duffield, Rob
SP  - 467
EP  - 472
VL  - 21
IS  - 5
N2  - OBJECTIVES: To examine the association of wet bulb globe temperature (WBGT) with the occurrence of heat-related incidents and changes in behavioural and matchplay characteristics in men's Grand Slam tennis. <br><br>DESIGN: On-court calls for trainers, doctors, cooling devices and water, post-match medical consults and matchplay characteristic data were collected from 360 Australian Open matches (first 4 rounds 2014-2016). <br><br>METHODS: Data were referenced against estimated WBGT and categorised into standard zones. Generalised linear models assessed the association of WBGT zone on heat-related medical incidences and matchplay variables. <br><br>RESULTS: On-court calls for doctor (47% increase per zone, p=0.001), heat-related events (41%, p=0.019), cooling devices (53%, p<0.001), and post-match heat-related consults (87%, p=0.014) increased with each rise in estimated WBGT zone. In WBGT's >32°C and >28°C, significant increases in heat-related calls (p=0.019) and calls for cooling devices (p<0.001), respectively, were evident. The number of winners (-2.5±0.006% per zone, p<0.001) and net approaches (-7.1±0.008%, p<0.001) reduced as the estimated WBGT zone increased, while return points won increased (1.75±0.46, p<0.001). When matches were adjusted for player quality of the opponent (Elo rating), the number of aces (5±0.02%, p=0.003) increased with estimated WBGT zone, whilst net approaches decreased (7.6±0.013%, p<0.001). <br><br>CONCLUSIONS: Increased estimated WBGT increased total match doctor and trainer consults for heat related-incidents, post-match heat-related consults (>32°C) and cooling device callouts (>28°C). However, few matchplay characteristics were noticeably affected, with only reduced net approaches and increased aces evident in higher estimated WBGT environments.<br><br>Copyright © 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.<p />  <p>Language: en</p>
LA  - en
SN  - 1440-2440
UR  - http://dx.doi.org/10.1016/j.jsams.2017.08.019
ID  - ref1
ER  -