Bioenergetic Analysis and Fatigue Assessment During the Fran Workout in Experienced Crossfitters.
Aim: To quantify the physiological demands and impact of muscle function t of the Fran workout, one of the most popular CrossFit benchmarks. Methods: Twenty experienced CrossFitters—16 male: 29 (6) years old and 4 female: 26 (5) years old— performed 3 rounds (with 30-s rests in between) of 21–21, 15...
| Publicado en: | International Journal of Sports Physiology & Performance Vol. 18; no. 7; pp. 786 - 793 |
|---|---|
| Autores principales: | , , , , , , , |
| Formato: | equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Human Kinetics Publishers, Inc.
Jul2023
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=164611485&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 164611485 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15550265 16IB jtl: International Journal of Sports Physiology & Performance issn: 15550265 maglogo: N pubinfo: dt: Jul2023 vid: 18 iid: 7 pid: 553 pub: Human Kinetics Publishers, Inc. place: Champaign, Illinois artinfo: ui: 164611485 164611485 164611485 10.1123/ijspp.2022-0411 164611485 ppf: 786 ppct: 7 formats: tig: atl: Bioenergetic Analysis and Fatigue Assessment During the Fran Workout in Experienced Crossfitters. aug: au: Rios, Manoel Zacca, Rodrigo Azevedo, Rui Fonseca, Pedro Pyne, David B. Reis, Victor Machado Moreira-Gonçalves, Daniel Fernandes, Ricardo J. affil: Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal sug: subj: Energy Metabolism Evaluation Fatigue Exercise Physiology High-Intensity Interval Training Methods Physical Fitness Evaluation Human Male Female Adult Squatting Heart Rate Evaluation Oxygen Consumption Evaluation Lactates Blood Glucose Analysis Analysis of Variance Aerobic Exercises Anaerobic Exercises Confidence Intervals Physical Performance Adult: 19-44 years Male Female ab: Aim: To quantify the physiological demands and impact of muscle function t of the Fran workout, one of the most popular CrossFit benchmarks. Methods: Twenty experienced CrossFitters—16 male: 29 (6) years old and 4 female: 26 (5) years old— performed 3 rounds (with 30-s rests in between) of 21–21, 15–15, and 9–9 front squats to overhead press plus pull-up repetitions. Oxygen uptake and heart rate were measured at baseline, during the workout, and in the recovery period. Rating of perceived exertion, blood lactate, and glucose concentrations were assessed at rest, during the intervals, and in the recovery period. Muscular fatigue was also monitored at rest and at 5 minutes, 30 minutes, and 24 hours postexercise. Repeated-measures analysis of variance was performed to compare time points. Results: Aerobic (52%–29%) and anaerobic alactic (30%–23%) energy contributions decreased and the anaerobic lactic contribution increased (18%–48%) across the 3 rounds of the Fran workout. Countermovement jump height decreased by 8% (−12 to −3) mean change (95% CI), flight duration by 14% (−19 to −7), maximum velocity by 3% (−5 to −0.1), peak force 4% (−7 to −0.1), and physical performance (plank prone 47% [−54 to −38]) were observed. Conclusions: It appears that the Fran workout is a physically demanding activity that recruits energy from both aerobic and anaerobic systems. This severe-intensity workout evokes substantial postexercise fatigue and corresponding reduction in muscle function. pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|