Kinesiology Commons^™

The Effects Of Coffee Ingestion On The Acute Testosterone Response To Exercise, Taylor Landry

Masters Theses, 2010-2019

Abstract

This study investigated the effects of coffee ingestion (COF) on serum testosterone responses to exercise in recreationally weight-trained males. Subjects ingested either 12 ounces of 6mg/kg caffeinated coffee (COF), decaffeinated coffee (DEC), or water (PLA) one hour prior to exercise in a randomized, within-subject, crossover design. The exercise session consisted of 21 minutes of high intensity interval cycling (alternating intensities corresponding to two minutes at power outputs associated with 2.0 mmol/L lactate and 4.0 mmol/L lactate) followed by resistance exercise (7 exercises, 3 sets of 10 repetitions, 65% 1RM, 1-minute rest periods). Subjects also completed repetitions to fatigue tests …

The Influence Of Time-Of-Day Consumption And Training Status On The Ergogenic Properties Of Caffeine, James C. Boyett

Masters Theses, 2010-2019

Purpose: The objectives were to determine the effects of time-of-day consumption and training status on the benefits of caffeine supplementation for cycling performance and peak muscle strength. METHODS: Twenty untrained and trained subjects completed four trials consisting of isokinetic peak torque testing and 3-km time trials (TT). Subjects ingested either 6 mg/kg of caffeine or a placebo one hour prior to each trial. Treatments were: morning + placebo, morning + caffeine, evening + placebo, evening + caffeine. Magnitude based inferences were used to evaluate treatment differences. RESULTS: Caffeine (‘very likely’ and ‘likely’) improved 3-km TT performance in the morning and …

The Influence Of A Cyp1a2 Polymorphism On The Hemostatic Response To Caffeine, Joseph James Aiello

Masters Theses, 2010-2019

Research has continued to provide conflicting results of caffeine’s effect on acute coronary events; although it is now apparent that a single nucleotide polymorphism at intron 1 of the cytochrome P450 (CYP1A2) gene may explain these equivocal findings. Despite the fact that markers of coagulation potential and fibrinolytic potential are associated with risk for myocardial infarction, the extent to which caffeine affects these markers is unknown. The purposes of this study were to determine the acute effects of caffeine on coagulation and fibrinolytic potential at rest and following maximal exercise and to determine if hemostatic responses engendered by caffeine are …

The Independent And Combined Effects Of Carbohydrate And Caffeine Ingestion On Cycling Performance, Tiffany L. Acker

Masters Theses, 2010-2019

Purpose: The purpose of this study was to determine the independent and combined effects of carbohydrate and caffeine ingestion on performance and physiological parameters during high-intensity aerobic cycling (~60 minutes). Methods: Ten cyclists (28 ± 3 yr, 73.2 ± 1.9 kg) performed 20 minutes of steady-state cycling (60% Wmax) followed by a simulated 20-km time trial (TT) under the following four treatment conditions: placebo (PLA), carbohydrate (CHO), caffeine (CAF), and a combination of CHO and CAF (CHO-CAF). One hour prior to exercise subjects ingested a placebo/caffeine capsule. Beverages (250 ml) were consumed immediately prior to the 20-min steady-state, immediately prior …

The Effects Of Different Doses Of Caffeine On A 40 Kilometer Cycling Time Trial: A Dose-Response Study, Michael Martin

Masters Theses, 2010-2019

Abstract The purpose of this study was to determine the ergogenic response to different caffeine doses of 3 mg/kg and 6 mg/kg consumed by trained cyclists 1 hour prior to a 40 kilometer cycling time trial. It was hypothesized that there would not be a difference in time trial performance following caffeine supplementation of a 3 mg/kg dose as compared to a 6 mg/kg dose. Sixteen male subjects, age 18-40, were initially assessed via a VO2max test on an indoor cycle trainer. Subjects then reported to the lab on 4 separate occasions following a 10 hour fast and a 24 …