How Does Push-Off Distance Influence Force–Velocity Profile and Performance During Vertical Jumping?
In many sports, practitioners must reach their maximal jump height (hmax) under time constraints. This requires a reduction of the countermovement depth and so of the push-off distance (hPO). The purpose of this study was to investigate how hPO influences force–velocity (F–v) profiles ( F ¯ 0 , v ¯...
| Publicado en: | Journal of Applied Biomechanics Vol. 41; no. 2; pp. 161 - 167 |
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| Autores principales: | , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Human Kinetics Publishers, Inc.
Apr2025
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| 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=183920093&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 183920093 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10658483 0DM jtl: Journal of Applied Biomechanics issn: 10658483 maglogo: N pubinfo: dt: Apr2025 vid: 41 iid: 2 pid: 553 pub: Human Kinetics Publishers, Inc. place: Champaign, Illinois artinfo: ui: 183920093 183920093 183920093 10.1123/jab.2024-0194 183920093 ppf: 161 ppct: 6 formats: tig: atl: How Does Push-Off Distance Influence Force–Velocity Profile and Performance During Vertical Jumping? aug: au: Pommerell, Félicie Boyas, Sébastien Samozino, Pierre Morel, Baptiste Begue, Jérémie Rahmani, Abderrahmane Peyrot, Nicolas affil: Movement-Interactions-Performance, MIP, UR 4334, Le Mans Université, Le Mans, France sug: subj: Jumping Physiology Biomechanics Task Performance and Analysis Human Kinetics Kinematics Descriptive Statistics Adult Adult: 19-44 years ab: In many sports, practitioners must reach their maximal jump height (hmax) under time constraints. This requires a reduction of the countermovement depth and so of the push-off distance (hPO). The purpose of this study was to investigate how hPO influences force–velocity (F–v) profiles ( F ¯ 0 , v ¯ 0 , P ¯ max , and SFv) and performance. Eleven participants (age: 26 [5] y, height: 175.6 [11.2] cm, mass: 76 [15] kg; squat 1RM: 129 [34] kg) performed maximal countermovement jumps. Kinetic and kinematic measurements were used to assess individual F–v profiles for 3 different hPO conditions (hPO-SMALL, hPO-MEDIUM, hPO-LARGE) from countermovement jumps performed under different load conditions (bodyweight [BW], BW + 8 kg, BW + 17 kg, BW + 40%1RM, BW + 70%1RM). Results indicated that F ¯ 0 and P ¯ max changed across hPO conditions, while v ¯ 0 remained constant. A lower hPO led to a significantly higher F ¯ 0 and P ¯ max . These changes resulted in a steeper SFv leading to a more force-oriented profile, a lower optimal SFv and a greater F–v imbalance. Reducing hPO and modifying F–v profile led, to some extent, to a reduction in hmax. Performance is a compromise between hPO, P ¯ max , and F–v imbalance, all influenced by countermovement depth. This explains why reducing countermovement depth to meet time constraint may lower performance. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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