Coconut water for sports

Rabindarjeet Singh, . (2010) Coconut water for sports. [Proceedings Paper]

The effectiveness of fresh young coconut water on whole body rehydration during a 2 h rehydration period following exercise-induced dehydration and on the physiological responses and cycling endurance performance in the heat was evaluated. In the first study: eight healthy male volunteers exercised at 60 of VO2max in the heat 31.l0.03C 51.40.l relative humidity rh until 3 of their body weight BW was lost. After exercise the subjects sat for 2 h in a thermoneutral environment 22.50.1 C; 67.0 1.0 rh and drank either coconut water CW carbohydrate electrolyte solution CES or plain water PW representing 120 of the fluid lost in three boluses. In the second study: eight cyclists cycled on a cycle ergometer at 70 VO2max until volitional exhaustion in a climatic chamber 3 1. l0.l C; 69.20.4 rh on three occasions separated by one week either ingesting CW CES or PW. During cycling subjects ingested 3ml.kg-l body weight of fluid every 20 minutes. All drinks given were randomised. Blood samples were taken at rest before during and after exercise at regular intervals throughout the rehydration period and cycle endurance performance. In the first study: the percent of body weight loss that was regained used as index of percent rehydration during CW CES and PW trials was 734 754 and 684 respectively but was not statistically different between trials. The rehydration index which provided an indication of how much of what was actually ingested was used for body weight restoration was again not different statistically between trials 1. 730.25 1.630.28 and 1.960.31 for CW CES and PW respectively. In the second study: the cycling time to exhaustion in CW trial 103.78.5 min was similar to the CES trial 105.810.8 min but both were significantly longer p0.05 to PW trial 70.65.6 min. Perceived rate of exertion was significantly higher p0.05 during the PW trial compared to CW and CES trials but not significant at point of exhaustion. CW and CES were significantly sweeter p0.05 than PW. In conclusion ingestion of fresh young coconut water CW a natural refreshing beverage could be used for whole body rehydration after exercise and CW was as good as ingesting CES for cycling performance in high heat and humidity indicating the usefulness of CW as a sports drink.

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Abstract

The effectiveness of fresh young coconut water on whole body rehydration during a 2 h rehydration period following exercise-induced dehydration and on the physiological responses and cycling endurance performance in the heat was evaluated. In the first study: eight healthy male volunteers exercised at 60 of VO2max in the heat 31.l0.03C 51.40.l relative humidity rh until 3 of their body weight BW was lost. After exercise the subjects sat for 2 h in a thermoneutral environment 22.50.1 C; 67.0 1.0 rh and drank either coconut water CW carbohydrate electrolyte solution CES or plain water PW representing 120 of the fluid lost in three boluses. In the second study: eight cyclists cycled on a cycle ergometer at 70 VO2max until volitional exhaustion in a climatic chamber 3 1. l0.l C; 69.20.4 rh on three occasions separated by one week either ingesting CW CES or PW. During cycling subjects ingested 3ml.kg-l body weight of fluid every 20 minutes. All drinks given were randomised. Blood samples were taken at rest before during and after exercise at regular intervals throughout the rehydration period and cycle endurance performance. In the first study: the percent of body weight loss that was regained used as index of percent rehydration during CW CES and PW trials was 734 754 and 684 respectively but was not statistically different between trials. The rehydration index which provided an indication of how much of what was actually ingested was used for body weight restoration was again not different statistically between trials 1. 730.25 1.630.28 and 1.960.31 for CW CES and PW respectively. In the second study: the cycling time to exhaustion in CW trial 103.78.5 min was similar to the CES trial 105.810.8 min but both were significantly longer p0.05 to PW trial 70.65.6 min. Perceived rate of exertion was significantly higher p0.05 during the PW trial compared to CW and CES trials but not significant at point of exhaustion. CW and CES were significantly sweeter p0.05 than PW. In conclusion ingestion of fresh young coconut water CW a natural refreshing beverage could be used for whole body rehydration after exercise and CW was as good as ingesting CES for cycling performance in high heat and humidity indicating the usefulness of CW as a sports drink.

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Item Type:	Proceedings Paper
Additional Information:	Summary En
AGROVOC Term:	Coconuts
AGROVOC Term:	Coconut water
AGROVOC Term:	Cycling
AGROVOC Term:	Retention of body fluids
AGROVOC Term:	Rehydration
AGROVOC Term:	Exercise
AGROVOC Term:	Health foods
AGROVOC Term:	Blood glucose
AGROVOC Term:	Gastrointestinal system
AGROVOC Term:	Body temperature
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11405

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