Improved exercise capacity in the heat followed by coconut water consumption

Abstract

Abstract-The aim of the present study was to assess the effects of prior ingestion of coconut water on fluid retention and exercise capacity in the heat as well as signs of gastrointestinal distress. Eight physically active men were recruited (age 23 ± 3 years, height 176 ± 6 cm, body mass 78 ± 7 kg) and performed three exercise capacity trials on a cycle ergometer in the heat (34 ± 1°C) after the ingestion of one of the following drinks: a) plain water (PW), b) flavored drink (FD), and c) coconut water (CW). Ingestion of CW resulted in a longer time to exhaustion (p=0.029). Likewise, participants achieved a higher heart rate in the CW session when compared to the other trials (PW 183 ± 5 bpm, FD 184 ± 8 bpm, and CW 189 ± 8 bpm, p<0.05) and a reduced urine output after the coconut water ingestion (PW 214 ± 85 ml, FD 267 ± 90 ml, and CW 161 ± 73 ml, p<0.05) indicating a higher fluid retention of coconut water in comparison to plain water and the flavored drink. These results demonstrate that previous ingestion of coconut water improves exercise capacity in the heat and provide a reduced urine output in comparison to plain water and flavored drink. Also there is no evidence for GI distress. Keywords: hydration, performance, temperatureResumo-O objetivo do presente estudo foi avaliar os efeitos da ingestão prévia de água de coco sobre a retenção de líquidos e capacidade de resistência ao exercício no calor, bem como sinais de desconforto gastrointestinal. Oito homens fisicamente ativos foram recrutados (idade 23 ± 3 anos, altura 176 ± 6 cm, massa corporal 78 ± 7 kg) e realizaram três sessões de capacidade de exercício em uma bicicleta ergométrica no calor (34 ± 1° C) após a ingestão de uma das seguintes bebidas: a) água pura (PW), b) bebida com sabor (FD), e c) água de coco (CW). A ingestão de CW resultou num maior tempo até a exaustão (p = 0,029). Da mesma forma, os participantes alcançaram uma frequência cardíaca mais alta na sessão de CW quando comparado com as outras sessões (PW 183 ± 5 bpm, FD 184 ± 8 bpm, e CW 189 ± 8 bpm, p <0,05) e uma taxa de produção de urina reduzida após a ingestão de água de coco (PW 214 ± 85 ml, FD 267 ± 90 ml, e CW 161 ± 73 ml, p <0,05), indicando uma maior retenção de líquidos na sessão água de coco em comparação com água pura e bebida com sabor. Estes resultados demonstram que a ingestão prévia de água de coco melhora a capacidade de exercício no calor e proporciona uma menor produção de urina em comparação com a água pura e bebida com sabor. Também não houve nenhuma evidência de desconforto gastrointestinal. Palavras-chave: hidratação, desempenho, temperaturaResumen-El objetivo del presente estudio fue evaluar los efectos de la ingesta previa de agua de coco en la retención de líquidos y la capacidad de ejercicio al calor, así como señales de malestar gastrointestinal. Ocho hombres físicamente activos fueron reclutados (edad 23 ± 3 años, altura 176 ± 6 cm, la masa corporal de 78 ± 7 kg) y se realizaron tres ensayos de capacidad de ejercicio en un cicloergómetro con el calor (34 ± ...

Coconut Water Does Not Improve Markers of Hydration During Sub-maximal Exercise and Performance in a Subsequent Time Trial Compared with Water Alone

“…The design implemented did not necessarily allow the past authors to investigate the effect of CW upon performance as the nature of the exercise may not be expected to change markedly (more exercise capacity than performance), and the participants did not consume any CW in the preceding 2-hour prior to the exercise test, hence the novelty of the current study. Laitano et al (2014) did however observe improvement in exercise capacity following the consumption of CW compared with PW when exercising in the heat (34°C, ~55% relative humidity). It may be the case that CW has more potential benefit under heat stress, but the results of the current study combined with those from Kalman et al (2012) suggest that CW has no apparent ergogenic benefit when consumed either during or post exercise in normothermic conditions.…”

“…It was reported that CW was more effective than PW for subsequent exercise in hot conditions. Of note is that neither of the tests employed by Kalman et al (2012) nor Laitano et al (2014) measured performance per se, but rather exercise capacity.…”

Efek Konsumsi Air Kelapa (<i>Cocos Nucifera</i>) terhadap Ketahanan Berolahraga Selama Latihan Lari pada Laki-laki Dewasa Bukan Atlet

“…10 Pemberian air kelapa sebelum dan juga selama latihan dilakukan oleh Laitano dkk. 11 Subjek penelitian diberi air biasa, minuman beresens jeruk, atau air kelapa 1 jam sebelum latihan bersepeda sampai terjadi kelelahan. Pemberian minuman sebanyak 10 mL/kgBB dilanjutkan selama latihan setiap 10 menit.…”

The Effect of Green Coconut Water (Cocos Nucifera) before Aerobic Physical Activity on Pulse Recovery in Athletic Athletes

“…[1] Argue that when the body lacks fluids, the body will experience dehydration. Very strenuous aerobic physical activity will affect the increase in pulse rate and the need for efforts to overcome this recovery [2].…”