The effects of 5% maltodextrin ingestion during 70% maximal heart rate (MHR) exercise on the performance of the high school students

Dashti, Habibollah and Siahkuhian, Marefat and Meamarbashi, Abbas (2009) The effects of 5% maltodextrin ingestion during 70% maximal heart rate (MHR) exercise on the performance of the high school students. Other thesis, University of Mohaghegh Ardabili.

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Abstract

The purpose of this study was to evaluate the effects of 5% maltodextrin ingestion during 70% maximal heart rate (MHR) exercise on the performance of the high school students. Methods: 30 young male subjects (mean ± SD of Age = 16/4±70/80, Weight = 68/49±4/27kg, Height = 172/31±5/32cm, VO2max = 51/21±5/69 ml/kg/min) were selected and randomly allocated to two groups; Carbohydrate (CHO) (N = 15) and Placebo (PL), (N = 15), (CHO group (ingestion a 5% maltodextrin solution at regular 15 minute intervals) and group PL drinking plain water at regular 15 minute intervals during exercise). 60 m sprint, 505 agility, sarjent jumping tests, max power, min power, mean power and fatigue index of the subjects measured (pre-test and post-test). Independent t-test was used for data analysis. Results: The results showed that decline in the sprint (-0.14±1.38 vs 0.06±0.42 Sec), agility (-0.12±0.21 vs 0.04±0.25 Sec), sarjent jumping (2±2.89 vs -.63±3.61 Cm), max power 18.14±122.65 vs 69.65±130.86 Wat), min power 10.05±91.15 vs. 8.27±71.89 Wat), mean power (30.10±75.89 vs 4.78±65.89 Wat) and fatigue index (0.43±3.84 vs 1.66±4.49 Wat/Sec) records of CHO group were not significantly different between two groups (p>0/05). Conclusion: ingestion of %5 Maltodextrin solution during 70% maximal heart rate (MHR) exercise failed to improve anaerobic performance and power output of the high school students compared to a placebo drink.

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