Decreased isokinetic trunk muscle strength and performance in long-term survivors of childhood malignancies: correlation with hormonal defects.

Background: There are not many clinical trials investigating the efficiency and compliance of using spinal orthoses in the management of osteoporosis. Objectives: The purpose of this study was to investigate the effect of long-term use and the compliance of spinal orthoses in postmenopausal women with vertebral fractures. Study design: Clinical trial of spinal orthoses in postmenopausal women. Methods: Women were separated into groups wearing different types of orthoses (Spinomed, Osteomed, Spinomed active, and Spine-X). Isometric maximum strength of trunk muscles (F/Wabdominals–extensors) was calculated and back pain was assessed in all women. In addition, women completed a compliance questionnaire about the use of the orthoses. Results: Spinomed decreased pain ( p = 0.001) and increased trunk muscle strength (F/Wabdominals, p = 0.005 and F/Wextensors, p = 0.003, respectively). The compliance of wearing an orthosis for 6 months was 66%. Conclusion: The results suggest that orthoses could be an effective intervention for back pain and muscle strengthening in osteoporotic women. Clinical relevance In women with established osteoporosis, wearing Spinomed orthosis for at least 2 h/day for 6 months decreased back pain significantly and increased personal isometric trunk muscle strength. All spinal orthoses could be valuable instruments to help all requested rehabilitation programs like spine muscles’ strengthening and postural correct behavior, but only when used properly.

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Relationship between trunk muscle strength and trunk muscle mass and thickness using bioelectrical impedance analysis and ultrasound imaging

Bio-Medical Materials and Engineering ◽

10.3233/bme-211218 ◽

2021 ◽

pp. 1-10

Author(s):

Ryo Miyachi ◽

Nana Koike ◽

Suzu Kodama ◽

Junya Miyazaki

Keyword(s):

Muscle Strength ◽

Muscle Mass ◽

Ultrasound Imaging ◽

Bioelectrical Impedance Analysis ◽

Muscle Thickness ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Trunk Muscle ◽

Trunk Muscles ◽

Trunk Muscle Strength

BACKGROUND: Although trunk muscles are involved in many important functions, evaluating trunk muscle strength is not an easy task. If trunk muscle mass and thickness could be used as indicators of trunk muscle strength, the burden of measurement would be reduced, but the relationship between trunk muscle strength and trunk muscle mass and thickness has not been clarified. OBJECTIVE: The purpose of this study was to clarify the relationship between trunk muscle strength and trunk muscle mass by bioelectrical impedance analysis and trunk muscle thickness by ultrasound imaging in healthy adults. METHODS: One hundred and twenty-one healthy university students were included in this study. Trunk flexion/extension muscle strength and trunk muscle mass by bioelectrical impedance analysis, and trunk muscle thickness by ultrasound imaging were measured. RESULTS: Both trunk flexion strength and trunk extension strength were significantly correlated with trunk muscle mass and oblique and rectus abdominis muscle thickness. Multiple regression analysis showed that trunk extension muscle strength had an independent relationship with trunk muscle mass. CONCLUSIONS: This study demonstrated that trunk muscle mass or trunk muscle thickness can be used as an alternative means for evaluating trunk muscle strength, making the evaluation of trunk muscles less burdensome.

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