Between-limb asymmetry in kinetic and temporal characteristics during bilateral plyometric drop jumps from different heights

Lim, Yi Yin; Sterzing, Thorsten; Teo, Crosby; Alonzo, Rebecca; Pan, Jing Wen; Teng, Phillis Soek Po; Kong, Pui Wah

doi:10.1080/02640414.2020.1752535

Cited by 12 publications

(20 citation statements)

References 18 publications

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“…In addition, limb preference may play a role in some of the kinetic differences between limbs during DJ [42]. The higher I-vGRFpeak in one limb seems to indicate that the limb bore more weight on landing indicates functional dominance for that limb compared with the other [21]. Overuse of the dominant foot can put more pressure on the corresponding knee joint, leaving the nondominant leg unable to absorb vibration effectively [43].…”

Section: Discussionmentioning

confidence: 99%

“…Overuse of the dominant foot can put more pressure on the corresponding knee joint, leaving the nondominant leg unable to absorb vibration effectively [43]. Athletes who regularly jump during training may gradually overload the functional limbs, leading to impacts such as chronic injury [21]. Therefore, the higher side-to-side asymmetry of I-vGRFpeak may increase injury risk during DJH50.…”

Section: Discussionmentioning

confidence: 99%

“…The first lower-extremity limb to leave the platform is called the lead limb, and the other the trail limb [4]. The trail limb may not have enough time to catch up with the lead limb, such that side-to-side asymmetry of landing times were increased when landing at a lower drop height, which may affect the neuromuscular load on both limbs and reduce athletic performance [21,22]. The larger side-to-side asymmetry of impact force may indicate reduced jumping ability and power output, as well as increased risk of lower-extremity injury [23].…”

Section: Introductionmentioning

confidence: 99%

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Different Drop Heights in Bilateral Asymmetry and Interjoint Coordination during Repetitive Drop-Jumps

Zhang¹,

Li²,

Yao³

et al. 2021

Symmetry

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The difference of drop heights will affect the biomechanics of lower extremities during drop-jump (DJ) landing. Therefore, this study explored the effects of drop heights and training volumes on interjoint coordination and the side-to-side asymmetry of the lower extremities during landing. Twenty males were randomly assigned to perform 200 DJs (DJs200) from 30, 40 and 50 cm (drop-jump height (DJH) 30, DJH40 and DJH50) platform. One-way ANOVA repeated measure, using MATLAB software, was used to compare the differences of interjoint coordination, side-to-side asymmetry of ground contact time (GCT) and the maximum impact in vertical ground-reaction forces peak (I-vGRFpeak) in the 1st, 50th, 100th, 150th and 200th jumps (DJ1, DJs50, DJs100, DJs150 and DJs200). To examine whether significant differences exist, the least significant difference’s (LSD) method was used for post-hoc comparison. The mean absolute relative phase (MARP) and deviation phase (DP) of hip–knee were lower than DJH50 at DJH30 and DJH40, while side-to-side asymmetry of GCT and I-vGRFpeak were greater than DJH30 and DJH40 at DJH50 within DJs200 (all p <0.05). However, there was no significant difference in MARP and DP of hip–ankle and knee–ankle. Therefore, training at DJH30 may effectively improve jumping performance and reduce musculoskeletal injury risk.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Different Drop Heights in Bilateral Asymmetry and Interjoint Coordination during Repetitive Drop-Jumps

Zhang¹,

Li²,

Yao³

et al. 2021

Symmetry

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“…The difference between the initial contact frames for each limb (uninvolved, involved) was then converted to milliseconds (ms) based on the sampling rate of the force platforms. 19,20 Calculations were performed so that positive values represented earlier initial contact for the uninvolved limb, negative values represented earlier initial contact for the involved limb, and zero values represented simultaneous initial contact. Unfiltered ground reaction force data were used for examining the initial contact timing, 19 since filtering can result in inaccurate temporal events, especially when there is a rapid change in signal amplitude.…”

Section: Methodsmentioning

confidence: 99%

Kinetic Asymmetry During a Repetitive Tuck Jump Task in Athletes with a History of Anterior Cruciate Ligament Reconstruction

VanZile

Snyder

Watkins³

et al. 2021

International Journal of Sports Physical Therapy

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BackgroundAthletes who have undergone anterior cruciate ligament reconstruction typically exhibit relatively high/rapid loading of their uninvolved limb during bilateral landing and jumping (vs. their limb that underwent reconstruction), which may place their uninvolved limb at risk for injury. However, previous studies have only examined forces and loading rates for tasks involving an isolated land-and-jump. PurposeThe purpose of this study was to examine bilateral landing and jumping kinetics during performance of a repetitive tuck jump task in athletes who had undergone anterior cruciate ligament reconstruction and completed rehabilitation. Study DesignCross-sectional study MethodsNine athletes (four males, five females) participated in this study. All participants had undergone successful unilateral anterior cruciate ligament reconstruction, had completed post-operative rehabilitation, and were in the process of completing return-to-sport testing. Athletes performed a repetitive tuck jump task for 10 seconds, while ground reaction forces were recorded for their uninvolved and involved limbs via separate force platforms. Two-way analysis of variance, for within-subjects factors of limb and cycle, was performed for the impact forces, loading rates, and propulsive forces from the first five land-and-jump cycles completed.

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“…Dalam metode pembelajaran pliometrik bukan hanya untuk mengembangkan otot tungkai saja, tetapi dapat juga mengembangkan otot-otot bagian tubuh yang lainnya. Pliometrik dapat dilakukan dalam berbagai macam bentuk metode pembelajaran termasuk metode pembelajaran lompat untuk extrimitas tubuh bagian bawah dan metode pembelajaran dengan bola medicine untuk ekstrimitas bagian atas, metode pembelajaran pliometrik adalah metode pembelajaran yang memungkinkan otot untuk mencapai kekuatan maksimal dalam waktu yang sesingkat mungkin (Karavelioglu et al, 2017;Lim et al, 2020;Ramírez-campillo et al, 2015;Staniszewski et al, 2020;Taylor et al, 2010;Yanci et al, 2016). Pliometrik dibagi menjadi tiga kelompok metode pembelajaran pliometrik, yaitu: (1) metode pembelajaran untuk anggota gerakan bawah (pinggul dan tungkai), (2) metode pembelajaran untuk batang tubuh, dan (3) metode pembelajaran untuk anggota gerak atas.…”

Section: Pembahasanunclassified

Pengaruh metode pliometrik barrier hops, pliometrik knee tuck jump, dan daya ledak terhadap hasil lompat jauh gaya jongkok

Rohendi

Budiman

2020

JPOE

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Penelitian ini bertujuan mengetahui pengaruh metode pliometrik barrier hops, dan pliometrik knee truck jump pada hasil belajar lompat jauh berdasarkan daya ledak otot tungkai siswa di SMPN 3 Lembang yang terdiri dari 21 kelas dengan total siswa sebanyak 630 orang. Metode yang digunakan untuk mengungkap permasalahan ini adalah metode eksperimen dengan desain factorial 2 x 2. Pengambilan sampel menggunakan Cluster Random Sampling. Jumlah sampel sebanyak 60 orang yang terdiri atas dua kelas terpilih. Analisis data menggunakan Analysis of Varians (ANOVA) dan uji lanjut dengan Uji Tukey. Hasil penelitian memperlihatkan bahwa secara keseluruhan terdapat perbedaan yang signifikan antara pemberian metode pliometrik barrier hops dan metode pliometrik knee tuck jump terhadap hasil lompat jauh gaya jongkok. Kelompok siswa yang memiliki daya ledak tinggi memiliki hasil yang lebih baik bila menggunakan metode pliometrik barrier hops. Begitupun kelompok siswa yang memiliki daya ledak rendah memiliki hasil yang lebih baik apabila menggunakan metode pliometrik barrier hops dibanding dengan knee tuck jump. Terdapat interaksi antara metode pembelajaran pliometrik dan daya ledak terhadap hasil belajar lompat jauh. Kesimpulan pada penelitian ini yaitu secara keseluruhan penerapan metode pliometrik barrier hops lebih unggul dibandingkan dengan metode knee truck jump apabila diterapkan pada hasil lompat jauh.

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Between-limb asymmetry in kinetic and temporal characteristics during bilateral plyometric drop jumps from different heights

Cited by 12 publications

References 18 publications

Different Drop Heights in Bilateral Asymmetry and Interjoint Coordination during Repetitive Drop-Jumps

Different Drop Heights in Bilateral Asymmetry and Interjoint Coordination during Repetitive Drop-Jumps

Kinetic Asymmetry During a Repetitive Tuck Jump Task in Athletes with a History of Anterior Cruciate Ligament Reconstruction

Pengaruh metode pliometrik barrier hops, pliometrik knee tuck jump, dan daya ledak terhadap hasil lompat jauh gaya jongkok

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