Gender Differences in Lower Extremity Kinematics and Kinetics of the Vertical Ground Reaction Force Peak in Drop-landing by Flatfooted Subjects

Chang, Jong Sung; Kwon, Yong Hyun; Choi, Jin Ho; Lee, Han-Suk

doi:10.1589/jpts.24.267

Cited by 6 publications

(5 citation statements)

References 21 publications

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“…Successful drop landing requires muscle strength, stability, and additional capabilities of the major joints, which are important factors influencing protection against injury to the joint facets 15 , 16 ) . Moreover, jumping and landing, which occur frequently during sporting events, can be soft or rigid, depending on the biomechanical energy loss 17 , 18 ) , and can be a cause of injury along with instability 19 , 20 ) . As the force of impact of ground reaction force (GRF) is greater during rigid landing than during soft landing, the presence of any abnormality during single-leg landing can be easily identified; moreover, based on these findings, the causes of such a decrease in major joints and muscles of the lower extremity can also be determined 21 ) .…”

Section: Introductionmentioning

confidence: 99%

Comparisons of knee and ankle joint angles and ground reaction force according to functional differences during single-leg drop landing

Kim

Jeon

2016

J Phys Ther Sci

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[Purpose] The purpose of this study was to determine potential predictors of functional instability of the knee and ankle joints during single-leg drop landing based on the prior history of injury. [Subjects and Methods] The subjects were 24 collegiate soccer players without pain or dysfunction. To compare the differences between the stable and unstable sides during single-leg drop landing, 8 motion analysis cameras and a force plate were used. The Cortex 4 software was used for a biomechanical analysis of 3 events. An independent t-test was used for statistical comparison between both sides; p<0.05 indicated significance. [Results] The knee joint movements showed gradual flexion in the sagittal plane. The unstable-side ankle joint showed plantar flexion of approximately 2° relative to the stable side. In the coronal plane, the unstable-side knee joint differed from the stable side in its tendency for valgus movement. The unstable-side ankle joint showed contrasting movement compared with the stable side, and the difference was significant. Regarding the vertical ground reaction force, the stable side showed maximum knee flexion that was approximately 0.1 BW lower than that of the unstable side. [Conclusion] Increasing the flexion angle of the knee joint can help prevent injury during landing.

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Section: Introductionmentioning

confidence: 99%

Comparisons of knee and ankle joint angles and ground reaction force according to functional differences during single-leg drop landing

Kim

Jeon

2016

J Phys Ther Sci

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“…Serat intermediet dan posterior dari m. gluteus medius berfungsi untuk abduksi pinggul dan rotasi lateral. 16 Perbedaan aktivasi m. gluteus medius pada perempuan saat landing position menyebabkan adduksi pinggul dan rotasi medial sehingga meningkatkan tenaga putaran persendian tibiofemoral dan menegangkan lig.…”

Section: Hasilunclassified

“…Perbedaan kinematik laki-laki dan perempuan disebabkan adanya perbedaan kekuatan otot dan kelenturan ligamen akibat perbedaan hormonal, serta faktor antropometri. 16 Status kognitif merupakan mediator untuk memprediksi performa TUG. Sebuah studi menunjukkan bahwa subjek wanita lanjut usia yang memiliki gangguan kognitif ringan membutuhkan waktu lebih lama untuk melakukan TUG dibandingkan laki-laki lanjut usia dengan gangguan kognitif ringan.…”

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Hubungan Riwayat Jatuh dan Timed Up and Go Test pada Pasien Geriatri

Nurmalasari

Widajanti

Dharmanta

2019

JPDI

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ABSTRAKPendahuluan. Jatuh merupakan masalah kesehatan yang umum dijumpai pada kelompok lanjut usia karena menyebabkan gangguan fisik dan psikis, bahkan kematian. Timed up and go test (TUG) merupakan metode skrining yang umum digunakan dalam praktik medis sebagai pemeriksaan dasar untuk menilai mobilitas, keseimbangan, dan risiko jatuh. Tujuan penelitian ini untuk menentukan hubungan riwayat jatuh dan TUG pada pasien geriatri di Rumah Sakit Umum daerah (RSUD) Dr.Soetomo Surabaya, Indonesia.Metode. Penelitian ini menggunakan desain deskriptif analitik cross-sectional dengan pendekatan observasional retrospektif.Subjek adalah pasien geriatri di RSUD Dr. Soetomo dengan kriteria usia ≥ 60 tahun, nilai mini mental state examination (MMSE) ≥ 17, tidak menderita stroke hemiplegia, dan tidak menggunakan alat bantu berjalan. Subjek dengan kriteria tersebut dilakukan wawancara untuk mengetahui riwayat jatuh 12 bulan terakhir, tingkat pendidikan, dan komorbiditas. Selanjutnya dilakukan penilaian MMSE, pengukuran IMT (indeks massa tubuh), dan penilaian TUG. Analisis statistika dilakukan menggunakan uji Fisher exact test.Hasil. Sebanyak 73 subjek ikut serta pada penelitian ini yang 56,16% di antaranya adalah perempuan. Dari 73 subjek, sebanyak 18 subjek memiliki riwayat jatuh dan 72,22% di antaranya adalah perempuan. Hasil uji Fisher menunjukkan adanya hubungan yang signifikan antara riwayat jatuh dan TUG dengan nilai p = 0,048 dan koefisien kontingensi 0,305.Simpulan. Terdapat hubungan yang lemah antara riwayat jatuh dan TUG pada pasien geriatri di RSUD Dr.Soetomo Surabaya. Penelitian selanjutnya perlu menambah dan memilih sampel dengan sebaran karakteristik merata agar hasil yang didapat bisa merepresentasikan keseluruhan populasi lanjut usia di RSUD Dr. Soetomo Surabaya. ABSTRACTIntroduction. Fall is the global major problem in geriatrics as it causes physical and physicological impairment, even leads to mortality. Timed up and go test (TUG) is the screening method which commonly used in medical practice as standard examination to assess mobility, balance, and fall risk.This study aimed to determine the correlation between TUG and history of falls in geriatric patients at General Hospital Dr. Soetomo Surabaya, Indonesia. Methods.A cross-sectional study was conducted among geriatric patients in Dr. Soetomo hospital with criteria ≥ 60 years old, mini mental state examination (MMSE) score ≥ 17, did not suffer from hemiplegic stroke, and did not use walking aids. Subjects with these criteria were interviewed to know the fall history from the past 12 months, level of education, and comorbidity. Then the subjects carried out MMSE assessment, BMI (body mass index) measurement, and TUG assessment. Statistical analysis was done with Fisher exact test.. Results.A total of 73 subjects participated in this study of which 56.16% were women. Among 73 subjects, 18 subjects had a history of falls and 72.22% of them were women. The Fisher test results showed a significant relationship between history of falls and TUG with p value= 0.048 and...

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“…In this way, ankle laxity can affect hip kinematics in association with the shifts in the balance strategies from the ankle to the hip joint [ 15 , 16 , 17 ]. For example, the hip joint was at a smaller external rotation angle at the initial contact of the drop jump in the group with ankle instability [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Changes in the Ground Reaction Force, Lower-Limb Muscle Activity, and Joint Angles in Athletes with Unilateral Ankle Dorsiflexion Restriction During A Rebound-Jump Task

Kondo

2018

JFMK

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Background: This study compared differences between a control group and a group with unilateral ankle dorsiflexion restriction in the ground reaction force (GRF), angles of the lower limbs joints, and muscular activity during a rebound-jump task in athletes who continue to perform sports activities with unilateral ankle dorsiflexion restriction. Methods: The athletes were divided into the following two groups: The dorsiflexion group included those with a difference of ≥7° between bilateral ankle dorsiflexion angles (DF), and the control group included those with a difference of <7° between the two ankles (C). An ankle foot orthosis was attached to subjects in group C to apply a restriction on the right-angle dorsiflexion angle. The percentage of maximum voluntary contraction (%MVC) of the legs musculature, components of the GRF, and the hip and knee joint angles during the rebound-jump task were compared between groups DF and C. Results: Group DF showed increased %MVC of the quadriceps muscle, decreased upward component of the GRF, decreased hip flexion, and increased knee eversion angles. Conclusions: This study highlighted that athletes with ankle dorsiflexion restriction had significantly larger knee eversion angles in the rebound-jump task. The reduced hip flexion was likely caused by the restricted ankle dorsiflexion and compensated by the observed increase in quadriceps muscle activation when performing the jump.

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Gender Differences in Lower Extremity Kinematics and Kinetics of the Vertical Ground Reaction Force Peak in Drop-landing by Flatfooted Subjects

Cited by 6 publications

References 21 publications

Comparisons of knee and ankle joint angles and ground reaction force according to functional differences during single-leg drop landing

Comparisons of knee and ankle joint angles and ground reaction force according to functional differences during single-leg drop landing

Hubungan Riwayat Jatuh dan Timed Up and Go Test pada Pasien Geriatri

Changes in the Ground Reaction Force, Lower-Limb Muscle Activity, and Joint Angles in Athletes with Unilateral Ankle Dorsiflexion Restriction During A Rebound-Jump Task

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