Effects of Gender Difference and Caffeine Supplementation on Anaerobic Muscle Performance
Chen HY, Wang HS, Tung K, Chao HH
International journal of sports medicine · 30 citations
How it was studied
- Design
- Randomized controlled trial (indexed by PubMed)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- Government
- Ministry of Science and Technology, Taiwan
Based on 1 listed funder(s).
Publication
- Published
- 2015-08-07 · Int J Sports Med · vol. 36 · issue 12 · pp. 974–978
- Publisher
- Thieme Medical Publishers (Germany)
- Cited
- 39 citations · more than 91% of similar papers · 3.0× the field average
- Impact
- Top 10% most cited in its field
- References
- 0 works
- Access
- Paywalled
- Research areas
- Eating Disorders and Behaviors · Muscle metabolism and nutrition · Obesity, Physical Activity, Diet
- Keywords
- Anaerobic exercise, Caffeine, Medicine, Physical therapy, Physical medicine and rehabilitation, Internal medicine
- MeSH
- muscle, skeletal, humans, caffeine, double-blind method, sex factors, muscle fatigue, isometric contraction, beverages, female, male, young adult, biomarkers
4 authors
From TW
- H.-Y. ChenNational Taiwan Normal University
- Hsuan-Ho WangNational Taiwan Normal University
- Kang TungNational Taiwan Normal University
- Hsiao-Han ChaoNational Taiwan University
Abstract
The primary purpose of this study was to investigate the effects of gender difference and caffeine supplementation to maximal voluntary isometric contractions (MVIC) and submaximal voluntary isometric contractions (T(lim)). 10 male (age: 20.10 ± 2.18 years, BMI: 22.23±1.96 kg/m(2)) and 10 female (age: 19.90±0.99 years, BMI: 21.76±2.65 kg/m(2)) elite collegiate athletes were recruited. Subjects ingested caffeine (6 mg/kg) or a placebo in a randomized, double-blind, placebo-control, and counter-balanced fashion. MVIC and T(lim) were measured after supplementations. T(lim) result was calculated based on the time to exhaustion of isometric contraction with 50% MVIC. Fatigue index (FI%) referred to the MVIC tested 20 s after the cessation of T(lim) test, and was indexed by the percentage of MVIC decline. No significant interaction effect was found between the gender factor and the supplementation factor for all dependent variables. Compared to the placebo, caffeine supplementation significantly increased MVIC (5.9%) and T(lim) (15.5%) (p<0.05) whereas it had no significant effect on FI%. This study demonstrates that caffeine supplementation at a 6 mg/kg dosage facilitates performances in MVIC and T(lim). The ergogenic effect of caffeine on muscle power and muscle endurance does not show a gender bias.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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