Manoel Rios , Ricardo Cardoso , Victor Machado Reis , Daniel Moreira-Gonçalves , David B. Pyne , Ricardo J. Fernandes
{"title":"Sex-related differences in the acute physiological response to a high-intensity CrossFit® workout","authors":"Manoel Rios , Ricardo Cardoso , Victor Machado Reis , Daniel Moreira-Gonçalves , David B. Pyne , Ricardo J. Fernandes","doi":"10.1016/j.crphys.2025.100148","DOIUrl":null,"url":null,"abstract":"<div><div>CrossFit® is popular form of fitness training but the cardiorespiratory, hemodynamic and metabolic responses have not been well characterised. We compared responses to a short Fran CrossFit® session (consisting of three rounds of 21, 15 and 9 front squat to press overhead and pull-ups) between sexes to evaluate differences in acute exercise effects. Twenty-five (15 males and 10 females) trained participants performed a prescribed Fran session at maximal exertion. Cardiorespiratory variables were assessed at baseline, during and post-exercise. The rating of perceived exertion, blood pressure, blood lactate and glucose concentrations were measured at baseline and in the recovery period. The males completed Fran session in less time (males 177 ± 15 vs females 206 ± 27 s; mean ± SD), resulting in higher peak oxygen uptake values (50.1 ± 3.3 vs 46.4 ± 2.2 mL kg <sup>−1</sup> min <sup>−1</sup>), heart rate (187 ± 6 vs 180 ± 3 b min<sup>−1</sup>) and percentage heart rate (96 ± 3 vs 93 ± 1 %) compared to females. In addition, elevated systolic blood pressure (male 154 ± 8 vs females 149 ± 10 mmHg), double product (27,050 ± 1504 vs 25,999 ± 2253 mmHg b∙min <sup>−1</sup>), blood lactate (15.7 ± 1.7 vs 14.6 ± 2.0 mmol L<sup>−1</sup>) and glucose (132 ± 15 vs 132 ± 14 mg dL<sup>−1</sup>) values were observed in both sexes post-exercise. The substantial metabolic demands associated with a Fran session can yield similar elevations in cardiorespiratory and hemodynamic responses in both sexes, meeting the criteria for developing cardiorespiratory fitness. Complementarily, these results suggest that researchers and coaches can use the Fran session at maximal effort to assess and monitor crossfitters' training status throughout a CrossFit® season, guiding efforts towards excellence in this demanding sport.</div></div>","PeriodicalId":72753,"journal":{"name":"Current research in physiology","volume":"8 ","pages":"Article 100148"},"PeriodicalIF":2.1000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current research in physiology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2665944125000100","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
CrossFit® is popular form of fitness training but the cardiorespiratory, hemodynamic and metabolic responses have not been well characterised. We compared responses to a short Fran CrossFit® session (consisting of three rounds of 21, 15 and 9 front squat to press overhead and pull-ups) between sexes to evaluate differences in acute exercise effects. Twenty-five (15 males and 10 females) trained participants performed a prescribed Fran session at maximal exertion. Cardiorespiratory variables were assessed at baseline, during and post-exercise. The rating of perceived exertion, blood pressure, blood lactate and glucose concentrations were measured at baseline and in the recovery period. The males completed Fran session in less time (males 177 ± 15 vs females 206 ± 27 s; mean ± SD), resulting in higher peak oxygen uptake values (50.1 ± 3.3 vs 46.4 ± 2.2 mL kg −1 min −1), heart rate (187 ± 6 vs 180 ± 3 b min−1) and percentage heart rate (96 ± 3 vs 93 ± 1 %) compared to females. In addition, elevated systolic blood pressure (male 154 ± 8 vs females 149 ± 10 mmHg), double product (27,050 ± 1504 vs 25,999 ± 2253 mmHg b∙min −1), blood lactate (15.7 ± 1.7 vs 14.6 ± 2.0 mmol L−1) and glucose (132 ± 15 vs 132 ± 14 mg dL−1) values were observed in both sexes post-exercise. The substantial metabolic demands associated with a Fran session can yield similar elevations in cardiorespiratory and hemodynamic responses in both sexes, meeting the criteria for developing cardiorespiratory fitness. Complementarily, these results suggest that researchers and coaches can use the Fran session at maximal effort to assess and monitor crossfitters' training status throughout a CrossFit® season, guiding efforts towards excellence in this demanding sport.
CrossFit®是一种流行的健身训练形式,但心肺、血液动力学和代谢反应尚未得到很好的表征。我们比较了两性对短暂的Fran CrossFit®训练的反应(包括三轮21,15和9前深蹲俯卧和引体向上),以评估急性运动效果的差异。25名(15名男性和10名女性)受过训练的参与者以最大的努力完成了规定的Fran课程。在基线、运动期间和运动后评估心肺变量。在基线和恢复期测量感知劳累程度、血压、血乳酸和葡萄糖浓度。男性完成Fran疗程的时间更短(男性为177±15秒,女性为206±27秒;平均±SD),与女性相比,导致更高的峰值摄氧量值(50.1±3.3 vs 46.4±2.2 mL kg - 1 min - 1),心率(187±6 vs 180±3 b min - 1)和百分比心率(96±3 vs 93±1%)。此外,运动后两性收缩压升高(男性154±8对女性149±10 mmHg),双产物(27,050±1504对25,999±2253 mmHg b∙min−1),血乳酸(15.7±1.7对14.6±2.0 mmol L−1)和葡萄糖(132±15对132±14 mg dL−1)值。与Fran相关的大量代谢需求可以在两性中产生类似的心肺和血流动力学反应的升高,符合发展心肺健康的标准。此外,这些结果表明,研究人员和教练可以在最大努力下使用Fran课程来评估和监测CrossFit®整个赛季的训练状态,指导在这项要求高的运动中取得卓越成就。