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ISSN : 2092-8475(Print)
ISSN : (Online)
Journal of International Academy of Physical Therapy Research Vol.11 No.2 pp.2090-2095

Immediate Effect of Spinal Mobilization on Lower Limb Strength in Healthy Individuals: A Pilot Study

Hojung Ana,Junghyun Choib,Taeseok Choib,Seoyoon Heoc,Chaegil Limd,Wansuk Choiea
aDepartment of Physical Therapy, Dongnam Health University, Suwon, Republic of Korea
bDepartment of Physical Therapy, Namseoul University, Cheonan, Republic of Korea
cDepartment of Occupational Therapy, School of Medical and Health Care, Kyungbok University, Pocheon, Republic of Korea
dDepartment of Physical Therapy, Gachon University, Incheon, Republic of Korea
eeDepartment of Physical Therapy, International University of Korea, Republic of Korea
Address for correspondence Wansuk Choi, PT, Prof., PhD Department of Physical Therapy, International University of Korea, Dongburo 965, Masan-eup, Jin ju, Korea Tel: 82-10-9041-2769


Background: Spinal Mobilization is one of the manual therapy technique that clinicians have used to treat pain, however, there is still a lack of research on changes in strength in healthy people.
Objectives: To investigate the effect of posterior-anterior lumbar mobilization on lower limb strength in healthy individuals.
Design: Two-group pretest-posttest design.
Methods: In this study, 23 healthy subjects aged 20 years were assigned to 12 lumbar mobilization group (LMG) and 12 sham group (SG) to perform intervention and measurement through pre- and post-design. Intervention was performed in LMG with grade III~IV on L3-5 of the lumbar spine, and lumbar mobilization was performed for each segment. After intervention, knee flexion and extension strength were measured. To measure the main effect on muscle strength, a comparative analysis was conducted using paired t-test and independent t-test. Results: In LMG, knee flexor and extensor strength were increased significantly at 60°/s (P<.05). In addition, the extensors of LMG and SG were significantly different only at 60°/s, and the flexors were significantly different between groups at both 60°/s and 180°/s (P<.05).
Conclusion: In healthy individuals, lumbar mobilization results in improvement of strength of knee flexor and extensor, and additional experiments on the effect of mobilization on the lumbar spine on functional changes in the lower limbs will be needed.