Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes
Caffeine’s ergogenic effects persist during various exercise modalities; however, information establishing its efficacy during CrossFit<sup>®</sup> protocols is limited. This study aimed to determine the effects of caffeine supplementation on CrossFit<sup>®</sup> performance....
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Sports |
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| Online Access: | https://www.mdpi.com/2075-4663/8/4/54 |
| _version_ | 1797569894556893184 |
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| author | Jesse A. Stein Melitza Ramirez Katie M. Heinrich |
| author_facet | Jesse A. Stein Melitza Ramirez Katie M. Heinrich |
| author_sort | Jesse A. Stein |
| collection | DOAJ |
| description | Caffeine’s ergogenic effects persist during various exercise modalities; however, information establishing its efficacy during CrossFit<sup>®</sup> protocols is limited. This study aimed to determine the effects of caffeine supplementation on CrossFit<sup>®</sup> performance. Twenty CrossFit<sup>®</sup>-trained men (age = 26.7 ± 6.2 years, experience = 3.7 ± 2.9 years) were randomized in a double-blind, crossover design. Participants completed two sessions separated by a seven-day washout period, 60 min after consuming 5 mg/kg body mass of caffeine or a placebo. In each session, participants completed as many rounds as possible in 20 min of five pull-ups, 10 push-ups, and 15 air squats. CrossFit<sup>®</sup> performance was the total number of repetitions completed in 20 min. Paired-samples t-tests were used to compare CrossFit<sup>®</sup> performance between caffeine and placebo conditions and to test for a potential learning effect between the first and second sessions. CrossFit<sup>®</sup> performance was not significantly different during the caffeine condition compared to the placebo (468.6 ± 114.7 vs. 466.7 ± 94.3 repetitions, <i>p</i> = 0.861). A significant learning effect was identified between the first and second sessions (452.4 ± 101 vs. 483.8 ± 106.5 repetitions, <i>p</i> = 0.001), with no significant effect of treatment order (<i>p</i> = 0.438). Caffeine’s ergogenic effect were not present during the CrossFit<sup>®</sup> workout “Cindy”; however, future research should include familiarization sessions and examine other CrossFit<sup>®</sup> workouts in novice and women participants. |
| first_indexed | 2024-03-10T20:17:47Z |
| format | Article |
| id | doaj.art-d3f09c8656fd4a5b982d1438823344c3 |
| institution | Directory Open Access Journal |
| issn | 2075-4663 |
| language | English |
| last_indexed | 2024-03-10T20:17:47Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sports |
| spelling | doaj.art-d3f09c8656fd4a5b982d1438823344c32023-11-19T22:27:03ZengMDPI AGSports2075-46632020-04-01845410.3390/sports8040054Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> AthletesJesse A. Stein0Melitza Ramirez1Katie M. Heinrich2Department of Kinesiology, College of Health and Human Sciences, Kansas State University, Manhattan, KS 66506, USADepartment of Kinesiology, College of Health and Human Sciences, Kansas State University, Manhattan, KS 66506, USADepartment of Kinesiology, College of Health and Human Sciences, Kansas State University, Manhattan, KS 66506, USACaffeine’s ergogenic effects persist during various exercise modalities; however, information establishing its efficacy during CrossFit<sup>®</sup> protocols is limited. This study aimed to determine the effects of caffeine supplementation on CrossFit<sup>®</sup> performance. Twenty CrossFit<sup>®</sup>-trained men (age = 26.7 ± 6.2 years, experience = 3.7 ± 2.9 years) were randomized in a double-blind, crossover design. Participants completed two sessions separated by a seven-day washout period, 60 min after consuming 5 mg/kg body mass of caffeine or a placebo. In each session, participants completed as many rounds as possible in 20 min of five pull-ups, 10 push-ups, and 15 air squats. CrossFit<sup>®</sup> performance was the total number of repetitions completed in 20 min. Paired-samples t-tests were used to compare CrossFit<sup>®</sup> performance between caffeine and placebo conditions and to test for a potential learning effect between the first and second sessions. CrossFit<sup>®</sup> performance was not significantly different during the caffeine condition compared to the placebo (468.6 ± 114.7 vs. 466.7 ± 94.3 repetitions, <i>p</i> = 0.861). A significant learning effect was identified between the first and second sessions (452.4 ± 101 vs. 483.8 ± 106.5 repetitions, <i>p</i> = 0.001), with no significant effect of treatment order (<i>p</i> = 0.438). Caffeine’s ergogenic effect were not present during the CrossFit<sup>®</sup> workout “Cindy”; however, future research should include familiarization sessions and examine other CrossFit<sup>®</sup> workouts in novice and women participants.https://www.mdpi.com/2075-4663/8/4/54high intensity functional trainingexercisemuscular enduranceergogenic aidssports nutrition |
| spellingShingle | Jesse A. Stein Melitza Ramirez Katie M. Heinrich Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes Sports high intensity functional training exercise muscular endurance ergogenic aids sports nutrition |
| title | Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes |
| title_full | Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes |
| title_fullStr | Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes |
| title_full_unstemmed | Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes |
| title_short | Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit<sup>®</sup> Athletes |
| title_sort | acute caffeine supplementation does not improve performance in trained crossfit sup r sup athletes |
| topic | high intensity functional training exercise muscular endurance ergogenic aids sports nutrition |
| url | https://www.mdpi.com/2075-4663/8/4/54 |
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