I Putu Gde Surya Adhitya, I Gusti Ngurah Wien Aryana, Ida Kurniawati, Sayu Aryantari Putri Thanaya, Made Bang Redy Utama
Objective: – Blood flow restriction (BFR) is a method used to affix a pneumatic cuff to the uppermost part of a leg. Blood flow restriction is often combined with low load-blood flow restriction training (LL-BFRt) to enhance strength and promote muscle hypertrophy. Therefore, this research aimed to examine the effect of LL-BFRt, sham LL-BFRt, and high load-resistance training (HL-Rt) on quadriceps strength (QS), dynamic stability, and functional performance.Design: – Single-blinded randomized trial method.Setting: – A private physical therapy clinic in Bali, Indonesia.Participants: – Data were collected from 63 basketball and rugby players assigned to 3 intervention groups, namely, LL-BFRt, sham LL-BFRt, and HL-Rt, through block randomization.Independent Variables: – Each participant received intervention consisting of 45-minute sessions twice per week for 8 weeks.Outcome Measures: – Quadriceps strength, star excursion balance test (SEBT), and single-leg hop test (SLHT) were evaluated in baseline, 4 weeks, and 8 weeks of the intervention period.Results: – In LL-BFRt and HL-Rt groups, QS, SEBT, and SLHT scores were significantly improved during 8-week intervention period, except in sham LL-BFRt group. Furthermore, there was a significant improvement in LL-BFRt ((Formula presented)QS: 9.2-33.5 Newton; (Formula presented)SEBT: 1.2-11.1 cm; (Formula presented)SLHT: 1.3-9.8 cm, P-values < 0.05) and HL-Rt groups ((Formula presented)QS: 15.4-35.9 Newton; (Formula presented)SEBT: 2.2-9.0 cm; (Formula presented)SLHT: 4.5-15.8 cm, P < 0.05) compared with sham LL-BFRt.Conclusions: – The improvements attained by participants using LL-BFRt and HL-Rt were comparable and capable of improving QS, SEBT, and SLHT more than sham LL-BFRt.Trial Registration: – NCT05951036. Copyright © 2025 Wolters Kluwer Health, Inc. All rights reserved.
Department of Physical Therapy, College of Medicine, Universitas Udayana, Denpasar, Bali, Indonesia; Department of Orthopaedic and Traumatology, College of Medicine and Professor Ngoerah General Hospital, Universitas Udayana, Denpasar, Bali, Indonesia; Department of Histology, Faculty of Medicine and Health Sciences, Universitas Warmadewa, Denpasar, Bali, Indonesia; Department of Sports Coaching, Faculty of Sport Science, Universitas Negeri Jakarta, East Jakarta, Jakarta, Indonesia
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