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All Journal SURABAYA PHYSICAL MEDICINE AND REHABILITATION JOURNAL Physical Therapy Journal of Indonesia
Utami, Ditaruni Asrina
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Chemical Engineering, Chemistry & Bioengineering Health Professions Medicine & Pharmacology Neuroscience Nursing Public Health

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Correlation Between Quadriceps, Hamstring, Tibialis Anterior, and Gastrocnemius Muscle Activation, With Knee Flexion Angle In Basketball Athlete While Performing Double-Leg Landing Task Utami, Ditaruni Asrina
Surabaya Physical Medicine and Rehabilitation Journal Vol. 2 No. 1 (2020): SPMRJ, Februari 2020
Publisher : Faculty of Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.784 KB) | DOI: 10.20473/spmrj.v2i1.17051

Abstract

ABSTRACTBackground: Anterior cruciate ligament (ACL) injury cause great disability for athlete. Recent focus of ACL injury management is on prevention by identifying the risk factors. Most of basketball injury mechanism is non-contact, related to landing process with small knee flexion angle. Muscle activation and its ratio, which control movement pattern in sagittal plane, are said to play a role in dynamic movement such as landing.Aims: The purpose of this study is to analyze the correlation between muscles activation and their activation ratio of quadriceps, hamstring, tibialis anterior and gastrocnemius with knee flexion angle of basketball athlete while performing double-leg landing task.Material and methods: This study was an observational analytic, cross sectional study. Study subjects was basketball athletes age 16 – 25 years in Surabaya. Measurements of knee flexion angle done with digital measurements of reflective marker, and muscle activation was measured with sEMG while performing double-leg landing task.Result: There was no significant correlation between maximum knee flexion angle and muscle activation of quadriceps (p=0,562), hamstring (p=0,918), tibialis anterior (p=0,394) and gastrocnemius (p=0,419). There was also no significant correlation between maximum knee flexion angle and the muscle activation ratio of quadriceps-hamstring (p=0,347), quadriceps-tibialis (p=0,139), quadriceps-gastrocnemius (p=0,626), hamstring-tibialis anterior (p=0,365), hamstring-gastrocnemius (p=0,867), and tibialis anterior-gastrocnemius (p=0,109).Conclusions: There was no correlation between muscle activation and muscle activation ratio of quadriceps, hamstring, tibialis anterior and gastrocnemius with maximum knee flexion angle in basketball athlete while performing double-leg landing task.
Impact of cycle ergometer based low-intensity aerobic exercise on quadriceps femoris strength in breast cancer patients receiving chemotherapy Perdana, Difitasari Cipta; Wardhani, Indrayuni Lukitra; Utami, Ditaruni Asrina; Suprabawati, Desak Agung Gede
Physical Therapy Journal of Indonesia Vol. 6 No. 2 (2025): Inpress July-December 2025
Publisher : Universitas Udayana dan Diaspora Taipei Medical University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51559/ptji.v6i2.332

Abstract

Background: Breast cancer and chemotherapy can reduce muscle strength through systemic and neuromusculoskeletal effects. This study aimed to evaluate the effect of low-intensity cycle ergometer exercise on quadriceps femoris strength in patients receiving chemotherapy. Methods: A randomized controlled trial was conducted at the medical rehabilitation outpatient clinic, Dr. Soetomo General Academic Hospital, Surabaya, Indonesia, from May to November 2024. Twenty female patients aged 18–59 years with stage II–III breast cancer who had completed at least three chemotherapy cycles were enrolled. Eligible participants had normal echocardiography findings (left ventricular ejection fraction ≥ 50%) and oncologist approval. Exclusion criteria included hemodynamic instability, hematologic abnormalities, arrhythmia, pulmonary disease exacerbations, recent surgery or radiotherapy, severe pain, or cognitive disorders. Participants were randomly assigned to either an intervention group or a control group. The intervention group performed low-intensity cycle ergometer training twice weekly for eight, while the control group performed breathing exercises only. Quadriceps femoris strength was measured before and after the intervention using a handheld dynamometer. Data were analyzed using paired and independent t-tests, with significance set at p-value < 0.05. Results: After eight weeks, the intervention group showed significantly greater increases in quadriceps femoris strength compared with the control group (right leg: p = 0.006; left leg: p= 0.020). Mean strength gains were 4.38 ± 2.3 kg (right) and 3.22 ± 1.9 kg (left), whereas the control group showed significant declines. Large effect sizes (Cohen’s d > 1) indicated clinically meaningful improvements in the exercise group. Conclusion: The intervention group showed significantly greater preservation and improvement of quadriceps femoris strength than the control group. Low-intensity cycle ergometer exercise appears to be a safe and effective rehabilitation strategy for maintaining muscle strength, functional capacity, and quality of life in breast cancer patients undergoing chemotherapy.
Co-Authors Difitasari Cipta Perdana Suprabawati, Desak Agung Gede Wardhani, Indrayuni Lukitra