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Effect of energy drink dose on exercise capacity, heart rate recovery and heart rate variability after high-intensity exerciseEffect of energy drink dose on exercise capacity, heart rate recovery and heart rate variability after high-intensity exercise

Other Titles
Effect of energy drink dose on exercise capacity, heart rate recovery and heart rate variability after high-intensity exercise
Authors
안상민박종석김상호
Issue Date
2014
Publisher
한국운동영양학회
Keywords
Energy Drink; Caffeine; HRV; HRR; Exercise; Cardiovascular
Citation
Physical Activity and Nutrition, v.18, no.1, pp.31 - 39
Journal Title
Physical Activity and Nutrition
Volume
18
Number
1
Start Page
31
End Page
39
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/100967
Abstract
[Purpose] The purpose of this research was to investigate the effects of exercise capacity, heart rate recovery and heart rate variability after high-intensity exercise on caffeine concentration of energy drink. [Methods] The volunteers for this study were 15 male university student. 15 subjects were taken basic physical examinations such as height, weight and BMI before the experiment. Primary tests were examined of VO2max per weight of each subjects by graded exercise test using Bruce protocol. Each of five subject was divided 3 groups (CON, ECGⅠ, ECGⅡ) by matched method based on weight and VO2max per weight what gained of primary test for minimize the differences of exercise capacity and ingestion of each groups. For the secondary tests, the groups of subjects were taken their materials before and after exercise as a blind test. After the ingestion, subjects were experimented on exercise test of VO2max 80% by treadmill until the all-out. Heart rate was measured by 1minute interval, and respiratory variables were analyzed VO2, VE, VT, RR and so on by automatic respiratory analyzer. And exercise exhaustion time was determined by stopwatch. Moreover, HRV was measured after exercise and recovery 3 min. [Results] Among the intake groups, ECGⅡ was showed the longest of exercise exhaustion time more than CON group (p=.05). Result of heart rate during exercise according to intake groups, there was significant differences of each time (p<.001), however, not significant differences of each groups and group verse time (p>.05). Result of RPE during exercise according to intake groups, there was significant differences of each time (p<.001), however, not significant differences of each groups and group verse time (p>.05). [Conclusion] In conclusion, EDGⅡ showed the significant increase of exercise exhaustion time more than CON group (p=.05) and not significant differences in HR, RPE, RER, HRV, HRR, blood pressure (p>.05). Therefore, 2.5 mg/kg-1 ingestion of energy drink might be positive effect to increase exercise performance capacity without side-effect in cardiovascular disease.
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문화스포츠대학 (국제스포츠학부 스포츠과학전공)
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