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The Effects of Caffeine in Conjunction with Acute Resistance Exercise on Performance and Hemodynamics in Resistance-Trained Women

Smith, Therese
http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1556631538602919

Abstract Details

2019, BS, Kent State University, College of Education, Health and Human Services / School of Health Sciences.
Caffeine consumption prior to resistance exercise has demonstrated significant increases in maximal strength in resistance-trained individuals, along with concomitant increases in heart rate (HR) and blood pressure (BP). Therefore, the purpose of the present study was to examine the effects of caffeine (4mg/kg) alone or in conjunction with acute resistance exercise in resistance-trained women on resistance exercise performance and cardiovascular hemodynamics. The acute bout of resistance exercise consisted of two sets of 10 repetitions at 75% 1 repetition maximum (1RM) for the squat and bench press, and one set to failure at 70% 1RM for both resistance exercises. Performance variables included the total load lifted, as well as the number of repetitions completed. Hemodynamic variables included HR, systolic and diastolic BP, mean arterial pressure, and pulse pressure. Measurements were taken at rest (Rest1), 45 minutes after consumption of the caffeine or placebo (Rest2), immediately post exercise (Rec1), and 10-minutes post exercise (Rec2). Paired samples t-tests were used to evaluate differences in total load, and the total number of repetitions performed during set 3. A 2 x 4 repeated measures ANOVA was used to assess the effects of condition (caffeine vs placebo) across the time (Rest1, Rest2, Rec1, Rec2) with a Bonferroni correction. Eight resistance-trained women (mean±SD: 23±3 yrs) completed the study. There were no significant differences between conditions for any performance variable. However, there was a significant (p=0.001) main effect of time for HR, such that it was elevated at Rec1 and Rec2, compared to Rest1 and Rest2. There were no significant interactions of main effects for systolic or diastolic BP. There was a significant interaction (p=0.04) for mean arterial pressure such that following caffeine consumption it was elevated at Rest2 compared to Rest1, and was different than Rest2 following the placebo. There was also no interaction or main effects of pulse pressure. Collectively, these data demonstrate that caffeine ingestion prior to resistance exercise significantly augments mean arterial pressure at rest, and has no effects on resistance exercise performance or other cardiovascular hemodynamics in resistance-trained women.
J. Derek Kingsley, Ph.D. (Advisor)
73 p.
Health Sciences
blood pressure; strength training; pulse pressure

Recommended Citations

Citations

  • Smith, T. (2019). The Effects of Caffeine in Conjunction with Acute Resistance Exercise on Performance and Hemodynamics in Resistance-Trained Women [Undergraduate thesis, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1556631538602919

    APA Style (7th edition)

  • Smith, Therese. The Effects of Caffeine in Conjunction with Acute Resistance Exercise on Performance and Hemodynamics in Resistance-Trained Women. 2019. Kent State University, Undergraduate thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1556631538602919.

    MLA Style (8th edition)

  • Smith, Therese. "The Effects of Caffeine in Conjunction with Acute Resistance Exercise on Performance and Hemodynamics in Resistance-Trained Women." Undergraduate thesis, Kent State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1556631538602919

    Chicago Manual of Style (17th edition)

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This open access ETD is published by Kent State University Honors College and OhioLINK.