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Effects of Post-Exercise Honey Drink Ingestion on Blood Glucose and Subsequent Running Performance in the Heat.

Ahmad NS, Ooi FK, Saat Ismail M, Mohamed M - Asian J Sports Med (2015)

Bottom Line: In Run-2, the longest distance covered in 20 min was recorded for determining running performance.Two-way repeated measured ANOVA and paired t-test were used for analysis.Thus, honey drink can be recommended for rehydration purpose for athletes who compete in the heat.

View Article: PubMed Central - PubMed

Affiliation: Sports Science Unit, School of Medical Sciences, Universiti Sains Malaysia, George Town, Malaysia.

ABSTRACT

Background: Glycogen depletion and hypoglycemia have been associated with fatigue and decrement of performance during prolonged exercise.

Objectives: This study investigated the effectiveness of Acacia honey drink as a post-exercise recovery aid on glucose metabolism and subsequent running performance in the heat.

Patients and methods: Ten subjects participated in this randomized cross-over study. All subjects performed 2 trials. In each trial, all subjects went through a glycogen depletion phase (Run-1), 2-hour rehydration phase and time trial running phase (Run-2). In Run-1, subjects were required to run on a treadmill at 65% VO2max in the heat (31°C, 70% relative humidity) for 60 min. During 2-hour rehydration phase, subjects drank either plain water (PW) or honey drink (HD) with amount equivalent to 150% of body weight loss in 3 boluses (60%, 50% and 40% subsequently) at 0, 30 and 60 min. In Run-2, the longest distance covered in 20 min was recorded for determining running performance. Two-way repeated measured ANOVA and paired t-test were used for analysis.

Results: Running distance in Run-2 covered by the subjects in the honey drink HD trial (3420 ± 350 m) was significantly (P < 0.01) longer compared to plain water PW trial (3120 ± 340 m). In general, plasma glucose, serum insulin and osmolality were significantly (P < 0.05) higher in HD compared to PW during the rehydration phase and Run-2.

Conclusions: These findings indicate that rehydration with honey drink improves running performance and glucose metabolism compared to plain water in the heat. Thus, honey drink can be recommended for rehydration purpose for athletes who compete in the heat.

No MeSH data available.


Related in: MedlinePlus

Serum Insulin Concentration (pmol.L-1) During Run-1, Rehydration, and Run-2 of Plain Water (PW) and Honey Drink (HD) Trials (Mean ± SD)GlyD, glycogen depletion phase; rehyD, Rehydration phase; TT, time trial phase; && P < 0.01 compared to respective end of Run-1; ## P < 0.01 compared to respective end of rehydration phase; *,** P < 0.05 and P < 0.01 compared to corresponding time in PW trial; In HD, serum insulin levels at 30, 60, 90 and 120 min of rehydration phase were significantly higher (P < 0.01) than the value at the end of Run-1, and also, significantly higher (P < 0.05) than PW trial at corresponding times.
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fig19673: Serum Insulin Concentration (pmol.L-1) During Run-1, Rehydration, and Run-2 of Plain Water (PW) and Honey Drink (HD) Trials (Mean ± SD)GlyD, glycogen depletion phase; rehyD, Rehydration phase; TT, time trial phase; && P < 0.01 compared to respective end of Run-1; ## P < 0.01 compared to respective end of rehydration phase; *,** P < 0.05 and P < 0.01 compared to corresponding time in PW trial; In HD, serum insulin levels at 30, 60, 90 and 120 min of rehydration phase were significantly higher (P < 0.01) than the value at the end of Run-1, and also, significantly higher (P < 0.05) than PW trial at corresponding times.

Mentions: Results of plasma glucose are presented in Figure 2. In the glycogen depletion phase (Run-1), no significant difference was observed in plasma glucose between HD and PW trials. Nevertheless, for each trial, there was a non statistically significant decrease in plasma glucose level from beginning until the end of Run-1. During rehydration phase, plasma glucose in HD trial increased significantly at the first 30 min compared to resting value (0 min) and reduced to a normal level at the end of rehydration phase (120 min). In PW trial, plasma glucose level was lower than resting value throughout the rehydration phase. During Run-2, trends of increase in plasma glucose concentrations until the end of the run were observed in both HD and PW trials. Serum insulin concentrations are shown in Figure 3. There were non statistically significant decreases in serum insulin concentrations in both HD and PW trials during Run-1. During the rehydration phase, no significant changes were observed in serum insulin in PW trial. However, in HD trial, the levels of serum insulin at 30, 60, 90, and 120 min were significantly higher than the value at the end of Run-1 and also significantly higher than PW trial at corresponding times. Reduced serum insulin level was also observed in HD trial at the later stage of rehydration phase. At the end of time trial running phase (Run-2), serum insulin concentration was significantly decreased in HD trial. However, there was no significant difference in serum insulin concentrations at the end of Run-2 compared to respective end of rehydration phase in PW trial. Results of serum osmolality are illustrated in Figure 4. In HD trial, serum osmolality level at 30, 60, 90, and 120 min during rehydration phase were significantly lower than the value at the end of Run-1. In PW trials, serum osmolality levels at 60, 90, and 120 min during rehydration phase were significantly lower than the value at the end of Run-1. At 60 min of rehydration phase, serum osmolality level was significantly higher (P < 0.05) in HD than PW. At the end of Run-2, serum osmolality levels in both HD and PW trial were significantly higher than the value at the end of rehydration phase, respectively.


Effects of Post-Exercise Honey Drink Ingestion on Blood Glucose and Subsequent Running Performance in the Heat.

Ahmad NS, Ooi FK, Saat Ismail M, Mohamed M - Asian J Sports Med (2015)

Serum Insulin Concentration (pmol.L-1) During Run-1, Rehydration, and Run-2 of Plain Water (PW) and Honey Drink (HD) Trials (Mean ± SD)GlyD, glycogen depletion phase; rehyD, Rehydration phase; TT, time trial phase; && P < 0.01 compared to respective end of Run-1; ## P < 0.01 compared to respective end of rehydration phase; *,** P < 0.05 and P < 0.01 compared to corresponding time in PW trial; In HD, serum insulin levels at 30, 60, 90 and 120 min of rehydration phase were significantly higher (P < 0.01) than the value at the end of Run-1, and also, significantly higher (P < 0.05) than PW trial at corresponding times.
© Copyright Policy - open-access
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4594138&req=5

fig19673: Serum Insulin Concentration (pmol.L-1) During Run-1, Rehydration, and Run-2 of Plain Water (PW) and Honey Drink (HD) Trials (Mean ± SD)GlyD, glycogen depletion phase; rehyD, Rehydration phase; TT, time trial phase; && P < 0.01 compared to respective end of Run-1; ## P < 0.01 compared to respective end of rehydration phase; *,** P < 0.05 and P < 0.01 compared to corresponding time in PW trial; In HD, serum insulin levels at 30, 60, 90 and 120 min of rehydration phase were significantly higher (P < 0.01) than the value at the end of Run-1, and also, significantly higher (P < 0.05) than PW trial at corresponding times.
Mentions: Results of plasma glucose are presented in Figure 2. In the glycogen depletion phase (Run-1), no significant difference was observed in plasma glucose between HD and PW trials. Nevertheless, for each trial, there was a non statistically significant decrease in plasma glucose level from beginning until the end of Run-1. During rehydration phase, plasma glucose in HD trial increased significantly at the first 30 min compared to resting value (0 min) and reduced to a normal level at the end of rehydration phase (120 min). In PW trial, plasma glucose level was lower than resting value throughout the rehydration phase. During Run-2, trends of increase in plasma glucose concentrations until the end of the run were observed in both HD and PW trials. Serum insulin concentrations are shown in Figure 3. There were non statistically significant decreases in serum insulin concentrations in both HD and PW trials during Run-1. During the rehydration phase, no significant changes were observed in serum insulin in PW trial. However, in HD trial, the levels of serum insulin at 30, 60, 90, and 120 min were significantly higher than the value at the end of Run-1 and also significantly higher than PW trial at corresponding times. Reduced serum insulin level was also observed in HD trial at the later stage of rehydration phase. At the end of time trial running phase (Run-2), serum insulin concentration was significantly decreased in HD trial. However, there was no significant difference in serum insulin concentrations at the end of Run-2 compared to respective end of rehydration phase in PW trial. Results of serum osmolality are illustrated in Figure 4. In HD trial, serum osmolality level at 30, 60, 90, and 120 min during rehydration phase were significantly lower than the value at the end of Run-1. In PW trials, serum osmolality levels at 60, 90, and 120 min during rehydration phase were significantly lower than the value at the end of Run-1. At 60 min of rehydration phase, serum osmolality level was significantly higher (P < 0.05) in HD than PW. At the end of Run-2, serum osmolality levels in both HD and PW trial were significantly higher than the value at the end of rehydration phase, respectively.

Bottom Line: In Run-2, the longest distance covered in 20 min was recorded for determining running performance.Two-way repeated measured ANOVA and paired t-test were used for analysis.Thus, honey drink can be recommended for rehydration purpose for athletes who compete in the heat.

View Article: PubMed Central - PubMed

Affiliation: Sports Science Unit, School of Medical Sciences, Universiti Sains Malaysia, George Town, Malaysia.

ABSTRACT

Background: Glycogen depletion and hypoglycemia have been associated with fatigue and decrement of performance during prolonged exercise.

Objectives: This study investigated the effectiveness of Acacia honey drink as a post-exercise recovery aid on glucose metabolism and subsequent running performance in the heat.

Patients and methods: Ten subjects participated in this randomized cross-over study. All subjects performed 2 trials. In each trial, all subjects went through a glycogen depletion phase (Run-1), 2-hour rehydration phase and time trial running phase (Run-2). In Run-1, subjects were required to run on a treadmill at 65% VO2max in the heat (31°C, 70% relative humidity) for 60 min. During 2-hour rehydration phase, subjects drank either plain water (PW) or honey drink (HD) with amount equivalent to 150% of body weight loss in 3 boluses (60%, 50% and 40% subsequently) at 0, 30 and 60 min. In Run-2, the longest distance covered in 20 min was recorded for determining running performance. Two-way repeated measured ANOVA and paired t-test were used for analysis.

Results: Running distance in Run-2 covered by the subjects in the honey drink HD trial (3420 ± 350 m) was significantly (P < 0.01) longer compared to plain water PW trial (3120 ± 340 m). In general, plasma glucose, serum insulin and osmolality were significantly (P < 0.05) higher in HD compared to PW during the rehydration phase and Run-2.

Conclusions: These findings indicate that rehydration with honey drink improves running performance and glucose metabolism compared to plain water in the heat. Thus, honey drink can be recommended for rehydration purpose for athletes who compete in the heat.

No MeSH data available.


Related in: MedlinePlus