Sport Sciences and Health Research

Sport Sciences and Health Research

The effect of a selected exercise protocol on trunk and lower limb muscle activity of older adults with both low back pain and pronated feet during walking

Document Type : Research Paper

Authors
Seyed Majid Alavi Mehr 1
Seyed Hamed Mousavi 2
AmirAli Jafarnezhadgero 1
1 Department of Sport Managements and Biomechanics, Faculty of Educational Science and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran
2 University of Tehran, Faculty of Sport Sciences and Health, Department of Health and Sport Medicine, Tehran, Iran
10.22059/sshr.2023.350097.1065
Abstract
Background: Low back pain is a common musculoskeletal condition that can impact a person's ability to walk and move comfortably. Pronated foot posture has been suggested as a potential contributor to low back pain, and this study examines its impact on muscle activity during gait in individuals with low back pain.
Aim: This study aimed to investigate whether pronated foot alters the activity timing of trunk and lower limb muscles during gait in low back pain patients.
Materials and Methods: The sample of this study included 32 men with low back pain and pronated foot. Participants were divided into control (n=15, with foot pronated only) and experimental (n=17, with both low back pain and foot pronated) groups. The experimental group did resistance training with Thera-band for 12 weeks, 3 sessions per week. A wireless electromyography system with 9 pairs of bipolar surface electrodes was used to record the electromyography activity timing of back and lower limb muscles (sample rate: 2000 Hz). Two-way ANOVA was used for statistical analysis.
Results: Significant between-group differences were found at baseline onset of EMG activity timing for gastrocnemious medialis (P<0.001), gluteus medius (P<0.001) and erector spinae at 3rd lumbar vertebral level (P=0.001) muscles. Results indicated significant main effects of “Time” for erector spinae at 3rd lumbar vertebral level offset (P=0.023), significant main effects of “group” for tibialis anterior offset (P= 0.039) and for erector spinae at 3rd lumbar vertebral level offset (P= 0.010).
Conclusion: The selected training program changed the timing of erector spinae at 3rd lumbar vertebral level in older adults with both low back pain and pronated feet during walking.
Keywords
electromyography
foot pronation
intervention
low back pain
training

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Sport Sciences and Health Research
Volume 14, Issue 1
January 2022
Pages 129-140