EFFECTS OF ACACIA HONEY DRINK SUPPLEMENTATION DURING REHYDRATION AFTER EXERCISE ON PHYSIOLOGICAL PARAMETERS AND SUBSEQUENT RUNNING PERFORMANCE IN THE HEAT
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Date
2012-06
Authors
AIDI - NAIM, MOHAMAD SAMSANI
Journal Title
Journal ISSN
Volume Title
Publisher
Pusat Pengajian Sains Perubatan Universiti Sains Malaysia
Abstract
INTRODUCTION: Prolonged exercise in a hot and humid environment will result in
glycogen depletion and associated with loss of body fluid. Carbohydrate contained
in sports beverages is beneficial for improving sports performance and preventing
or reduced dehydration. Carbohydrate contained in honey can served as a useful
alternative form of carbohydrate for enhancing sports performance. This study was
designed to investigate the effectiveness of honey drink compared to sports drink
as post exercise recovery aids for subsequent running time trial performance and
physiological parameters in a hot and humid environment. METHOD: 10 male
recreational athletes (age: 22.2 ± 2.0 years, VO2max: 51.5 ± 3.7 ml.kg-1.min-1)
participated in this randomized cross-over study. On each trial, subjects were
required to run for 1 hour in the glycogen depletion phase (Run-1), followed by a
rehydration phase for 2 hours and subsequently a 20 minutes time trial
performance (Run-2). During Run-1, subjects were required to run on the treadmill
in the heat (31°C) with 70% relative humidity at 70 % of their VO2max. During
rehydration phase subjects drank either honey drink or sports drink or plain water
with amount equivalent to 150% of body weight loss in dispersed interval (60 %,
50 % and 40 %) at 0 min, 30 min and 60 min respectively. Subsequently, time trial
was performed by the subject in 20 minutes and the longest distance covered was
recorded. Physiological parameters were analysed using two-way ANOVA with
repeated measure and time trial performance was analysed using one-way
ANOVA. RESULTS: The present study showed that Acacia honey elicited a better
time trial performance with significantly longer distance compared to water trial (P
= 0.03, P < 0.05). However, there was no significant difference between Acacia
honey and sport drink trials (P = 0.729, P > 0.05). Acacia honey and sports drink
trials elicited 249 m (8.24 %) and 211 m (6.79 %) longer in distance compared to
the water trial respectively. For physiological parameters, plasma glucose, plasma
insulin and plasma free fatty acids in Acacia honey and sports drink trials were
significantly higher compared to the water trial respectively during rehydration
phase and time trial running performance phase. However, there were no
significant differences in body weight changes, oxygen uptake, heart rate, rate of
perceived exertion, tympanic temperature, room temperature, relative humidity,
hematocrit, plasma volume changes, plasma cortisol and urine parameters in all
the trials. CONCLUSION: These results suggest that rehydration with Acacia
honey and sports drink elicited greater beneficial effects on running performance
and physiological parameters compared to water trial. However, statistical
significance was only observed between Acacia honey and water in running time
trial performance. Thus, Acacia honey drink has potential to be used as an
ergogenic aid for rehydration purposes in athletes who train and compete in hot
and humid environment.
Description
Keywords
Sports Science