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Title: Cold drink attenuates heat strain during work-rest cycles
Authors: Lee J.K.W. 
Yeo Z.W.
Nio A.Q.X.
Koh A.C.H.
Teo Y.S.
Goh L.F.
Tan P.M.S.
Byrne C.
Keywords: internal cooling
Issue Date: 2013
Citation: Lee J.K.W., Yeo Z.W., Nio A.Q.X., Koh A.C.H., Teo Y.S., Goh L.F., Tan P.M.S., Byrne C. (2013). Cold drink attenuates heat strain during work-rest cycles. International Journal of Sports Medicine 34 (12) : 1037 - 1042. ScholarBank@NUS Repository.
Abstract: There is limited information on the ingestion of cold drinks after exercise. We investigated the thermoregulatory effects of ingesting drinks at 4°C (COLD) or 28°C (WARM) during work-rest cycles in the heat. On 2 separate occasions, 8 healthy males walked on the treadmill for 2 cycles (45 min work; 15 min rest) at 5.5 km/h with 7.5% gradient. Two aliquots of 400 mL of plain water at either 4°C or 28°C were consumed during each rest period. Rectal temperature (T re ), skin temperature (T sk), heart rate and subjective ratings were measured. Mean decrease in T re at the end of the final work-rest cycle was greater after the ingestion of COLD drinks (0.5±0.2°C) than WARM drinks (0.3±0.2°C; P<0.05). Rate of decrease in T sk was greater after ingestion of COLD drinks during the first rest period (P<0.01). Mean heart rate was lower after ingesting COLD drinks (P<0.05). Ratings of thermal sensation were lower during the second rest phase after ingestion of COLD drinks (P<0.05). The ingestion of COLD drinks after exercise resulted in a lesser than expected reduction of T re. Nevertheless, the reduction in T re implies a potential for improved work tolerance during military and occupational settings in the heat. © Georg Thieme Verlag KG Stuttgart.
Source Title: International Journal of Sports Medicine
ISSN: 01724622
DOI: 10.1055/s-0033-1337906
Appears in Collections:Staff Publications

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