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Ice Slurry Ingestion Does Not Enhance Self-paced Intermittent Exercise in the Heat

Gerrett, Nicola and Jackson, Sarah and Yates, James and Thomas, Gavin (2016) Ice Slurry Ingestion Does Not Enhance Self-paced Intermittent Exercise in the Heat. Scandinavian Journal of Medicine & Science in Sports, 27 (11). pp. 1202-1212. ISSN Online: 1600-0838

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Abstract

This study aimed to determine if ice slurry ingestion improved self-paced intermittent exercise in the heat. After a familiarisation session, 12 moderately trained males (30.4 ± 3.4 year, 1.8 ± 0.1 cm, 73.5 ± 14.3 kg, inline imageO2max 58.5 ± 8.1 mL/kg/min) completed two separate 31 min self-paced intermittent protocols on a non-motorised treadmill in 30.9 ± 0.9 °C, 41.1 ± 4.0% RH. Thirty minutes prior to exercise, participants consumed either 7.5 g/kg ice slurry (0.1 ± 0.1 °C) (ICE) or 7.5 g/kg water (23.4 ± 0.9 °C) (CONTROL). Despite reductions in Tc (ΔTc: −0.51 ± 0.3 °C, P < 0.05) and thermal sensation prior to exercise, ICE did not enhance self-paced intermittent exercise compared to CONTROL. The average speed during the walk (CONTROL: 5.90 ± 1.0 km, ICE: 5.90 ± 1.0 km), jog (CONTROL: 8.89 ± 1.7 km, ICE: 9.11 ± 1.5 km), run (CONTROL: 12.15 ± 1.7 km, ICE: 12.54 ± 1.5 km) and sprint (CONTROL: 17.32 ± 1.3 km, ICE: 17.18 ± 1.4 km) was similar between conditions (P > 0.05). Mean Tsk, Tb, blood lactate, heart rate and RPE were similar between conditions (P > 0.05). The findings suggest that lowering Tc prior to self-paced intermittent exercise does not translate into an improved performance.

Item Type: Article
Additional Information:

This is the peer reviewed version of the following article: 'Gerrett, Nicola and Jackson, Sarah and Yates, James and Thomas, Gavin (2016), Ice Slurry Ingestion Does Not Enhance Self-paced Intermittent Exercise in the Heat. Scandinavian Journal of Medicine & Science in Sports', which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/sms.12744/epdf. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

Staff and students at the University of Worcester can access the full-text of the online published article via Library Search. External users should check availability with their local library or Interlibrary Requests Service.

Uncontrolled Keywords: pre-cooling, thermoregulation, performance, team sports, intermittent exercise, self-pacing
Subjects: Q Science > QP Physiology
Divisions: Academic Departments > Institute of Sport and Exercise Science
Related URLs:
Depositing User: Gavin Thomas
Date Deposited: 23 Sep 2016 14:10
Last Modified: 08 Nov 2017 10:11
URI: https://eprints.worc.ac.uk/id/eprint/4913

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