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Full-Text Articles in Kinesiology
The Effect Of Menstrual Phase And Oral Contraceptive Steroids On Caffeine During Cycling Performance, Annette M. Lemanski
The Effect Of Menstrual Phase And Oral Contraceptive Steroids On Caffeine During Cycling Performance, Annette M. Lemanski
Masters Theses, 2010-2019
PURPOSE: There is evidence that female sex hormones impact caffeine metabolism, with decreased CYP1A2 activity and diminished caffeine clearance in women with higher estrogen levels. Therefore, the objectives of this project were to determine the effects of oral contraceptives and menstrual cycle on the benefits of caffeine supplementation for cycling performance. METHODS: Sixteen recreationally trained female cyclists, oral contraceptive steroid (OCS) users (n=8, age = 21.4 ± 1.4 years, height = 168.4 ± 3.6 cm, weight = 63.6 ± 7.2kg, VO2max = 48.0 ± 4.0 ml/kg/min), and non-users (n=8, age = 20.9 ± 2.1 years, height = 161.0 ± …
The Influence Of Time-Of-Day Consumption And Training Status On The Ergogenic Properties Of Caffeine, James C. Boyett
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 Effects Of Different Doses Of Caffeine On A 40 Kilometer Cycling Time Trial: A Dose-Response Study, Michael Martin
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 …