Effect of Osteoporosis Prevention Exercise on Lower Limb Strength and Fall Risk: A One-Group Pretest–Posttest Study

I Komang Agus Pranata; I A Ratih Wulansari Manuaba; I Putu Prisa Jaya; Komang Tri Adi Suparwati

doi:10.24843/

Authors

I Komang Agus Pranata Physiotherapy Study Program, Faculty of Health Sciences, Universitas Bali Internasional, Denpasar, Bali, Indonesia Author
I A Ratih Wulansari Manuaba Physiotherapy Study Program, Faculty of Health Sciences, Universitas Bali Internasional, Denpasar, Bali, Indonesia Author
I Putu Prisa Jaya Physiotherapy Study Program, Faculty of Health Sciences, Universitas Bali Internasional, Denpasar, Bali, Indonesia Author
Komang Tri Adi Suparwati Physiotherapy Study Program, Faculty of Health Sciences, Universitas Bali Internasional, Denpasar, Bali, Indonesia Author

DOI:

https://doi.org/10.24843/

Keywords:

Aged, Accidental Falls, Exercise Therapy, Muscle Strength, Osteoporosis, Postural Balance

Abstract

Background: Aging is associated with reduced lower limb muscle strength, impaired postural stability, and increased fall risk. This study evaluated Osteoporosis Prevention Exercise Series I as a low-impact exercise program for community-dwelling older women.
Objective: To evaluate the effect of Osteoporosis Prevention Exercise Series I on lower limb muscle strength and fall risk.
Methods: A one-group pretest–posttest study involved 50 community-dwelling older women recruited using total sampling. Participants performed the exercise program three times weekly for four weeks, with 40-minute sessions. Lower limb muscle strength was assessed using a Leg Dynamometer and fall risk using the Timed Up and Go Test (TUGT). Data were analyzed using the Wilcoxon Signed-Rank Test at p < 0.05.
Results: Lower limb muscle strength increased from 100.42 ± 22.20 kg to 130.76 ± 31.32 kg, with a mean improvement of 30.34 ± 9.12 kg (p < 0.001). TUGT time decreased from 18.30 ± 2.95 to 10.30 ± 2.24 seconds, with a mean reduction of 8.00 ± 0.71 seconds (p < 0.001).
Conclusion: Osteoporosis Prevention Exercise Series I was associated with improved lower limb muscle strength and reduced fall risk among community-dwelling older women. The absence of a control group limits causal inference and supports the need for controlled studies.