Accentuated Eccentric Loading in Countermovement Jumps Vs. Drop Jumps: Effects on Jump Performance and Strength in A Randomized Controlled Trial.
This study examined the effects of Accentuated Eccentric Loading Countermovement Jump (AEL CMJ) training on jump performance, lower body strength, sprint performance, and change of direction ability, compared to drop jump (DJ) training. This study used a randomized controlled trial (RCT) with a para...
| Publicado en: | Journal of Sports Science & Medicine Vol. 24; no. 1; pp. 20 - 31 |
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| Autores principales: | , , , , , , , , , , , , |
| Formato: | research tables/charts randomized controlled trial Journal Article |
| Publicado: |
Hakan Gur, Journal of Sports Science & Medicine
Mar2025
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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=183843888&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 183843888 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13032968 FYN jtl: Journal of Sports Science & Medicine issn: 13032968 maglogo: N pubinfo: dt: Mar2025 vid: 24 iid: 1 pid: 26030 pub: Hakan Gur, Journal of Sports Science & Medicine artinfo: ui: 183843888 183843888 183843888 10.52082/jssm.2025.20 183843888 ppf: 20 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Accentuated Eccentric Loading in Countermovement Jumps Vs. Drop Jumps: Effects on Jump Performance and Strength in A Randomized Controlled Trial. aug: au: Zhengqiu Gu Chong Gao Hang Zheng Kaifang Liao Bishop, Chris Hughes, Jonathan Mingyue Yin Zhiyuan Bi Zhan Li Jian Li Meixia Chen Jianxi Wei Yongming Li affil: School of Athletic Performance, Shanghai University of Sport, Shanghai, China sug: subj: Eccentric Contraction Jumping Athletic Performance Evaluation Training Effect (Physiology) Evaluation Muscle Strength Evaluation Physical Performance Evaluation Sprinting Biomechanics Human Randomized Controlled Trials Random Assignment Pretest-Posttest Control Group Design Comparative Studies Funding Source Physical Education and Training Male Adult Body Mass Index Body Height Descriptive Statistics Plyometrics T-Tests Therapeutic Exercise Adult: 19-44 years Male ab: This study examined the effects of Accentuated Eccentric Loading Countermovement Jump (AEL CMJ) training on jump performance, lower body strength, sprint performance, and change of direction ability, compared to drop jump (DJ) training. This study used a randomized controlled trial (RCT) with a parallel design. Forty men physical education students (Mean ± SD: age 22.60 ± 3.24 years, body mass 75.21 ± 8.12 kg, height 1.79 ± 0.07 m) were randomly assigned to AEL (n = 14), DJ (n = 13), or a control group (CON, n = 13). The AEL and DJ groups trained three times per week for 8 weeks, while the CON group maintained their usual routines. All groups with similar levels of physical activity outside the training. Pre-, mid- (4 weeks), and post-intervention (8 weeks) assessments measured jump performance (CMJ and squat jump (SJ)), 1RM squat strength, 30 m sprint time, and change of direction (T-test). A mixed-effects model evaluated group and time effects. Significant group x time interactions were observed for CMJ height (P = 0.006), with both AEL and DJ training improving CMJ (AEL: +11.8%, ES = 0.77; DJ: +7.7%, ES = 0.47), SJ height (AEL: +5.7%, ES = 0.37; DJ: +11.3%, ES = 0.66), and 1RM squat (AEL: +7.0%, ES = 0.44; DJ: +8.4%, ES = 0.46) at 8 weeks. Neither training method significantly improved sprint or change of direction performance. Additionally, no significant gains were seen in any indicator at 4 weeks. These results indicate that AEL CMJ and DJ training both effectively enhance vertical jump and strength, positioning AEL CMJ as an effective alternative or complement to DJ training. pubtype: Academic Journal doctype: research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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