Effect of caffeine upon maximal muscular endurance of females
Abstract
The effect of various dosages of caffeine upon maximal endurance capacity in females was studied. The effect of caffeine upon resting heart rate (RHR), submaximal heart rate (SHR), maximal heart rate (MHR), and ratings of perceived exertion (RPE) was also studied. Prior to undertaking a standarized progressive workload to exhaustion on an electric bicycle ergometer, each subject consumed either a placebo, small (4 mg/kg), medium (7 mg/kg) or large (10 mg/kg) dose of caffeine. A double-blind procedure was followed. Mean times to exhaustion for the placebo, small, medium and large dosages of caffeine were, respectively, 299.5, 312.1, 299.8, and 303.2 seconds. MHR were respectively, 183.4, 185.0, 185.4, and 184.4. Maximal RPE were 16.6, 17.0, 16.3, and 17.1. The analysis of variance revealed no significant differences between the drug trials for the above three variables; in addition, no significant differences were noted for the RHR, SHR, and submaximal RPE. Within the limitations of this study, the following conclusion appears warranted: A small, moderate, or large dose of caffeine exerted no significant effect upon maximal endurance time, RHR, SHR, MHR, or RPE at either submaximal or maximal workloads.
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The similar heart rate response at high levels of exercise is consistent with other studies using either habituated or non-habituated subjects.
“This similar heart rate response at high levels of exercise is consistent with other studies using either habituated or non-habituated subjects [ 10 , 13 , 14 , 18 , 23 , 24 , 27 ].”
From Low doses of caffeine reduce heart rate during submaximal cycle ergometry (2007) · cites this paper as [23]
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Cited by 45
- Authors
- PERKINS, R., & WILLIAMS, M. H.
- Affiliations
- Old Dominion University (US)
- Venue
- Medicine and Science in Sports and Exercise
- Published
- 1975
- Volume
- 7
- Issue
- 3
- Pages
- 221???224
- ISSN
- 0195-9131 (ISSN-L)
- OpenAlex
- W2022659959
- Cited by
- 45
- References
- 0
- Citations by year
- 2022: 2 · 2021: 1 · 2019: 1 · 2017: 1 · 2016: 3 · 2015: 1
- FWCI
- 0.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Medicine & Science in Sports & Exercise (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pharmacology › Coffee research and impacts
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Keywords
- caffeine, muscular endurance, time to exhaustion, female athletes, resting heart rate, submaximal heart rate, maximal heart rate, rating of perceived exertion, caffeine dosage, ergometer exercise
- MeSH terms
- Adaptation, Physiological, Adult, Caffeine, Drug Evaluation, Physical Exertion, Female, Heart Rate, Humans, Muscles, Placebos, Sports Medicine
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