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N. Vaidya1, N. Bedekar1
1Sancheti Institute College of Physiotherapy, Musculoskeletal Physiotherapy, Pune, India
Background: Osteoporosis being one of the major changes in post menopausal women, screening forms a vital aspect of their assessment due to the risk of fracture that they are under. Lumbar spine fracture is one of the fractures that leads to significant reduction in the quality of life. Studies have proven that muscle strengthening has positive effects on the bone density. Hence it is important to study if there is a measurable relationship between muscle strength measured not just site specifically but also distally, body composition and the bone mineral density. This study was done to find out the correlation between muscle strength, body composition and bone mineral density in post menopausal women.
Purpose: Usage of clinically feasible devices to measure muscle strength and body composition and to study its correlation with the value of T score on Dual Energy X-Ray absroptiometry(DXA) which will help in generating values that might change the approach towards rehabilitation and screening of a post menopausal female.
Methods: It was a correlational study done in a tertiary healthcare set up on 71 postmenopausal women in the age group of 45-75 who had undergone DXA scan, medically stable and who had undergone menopause 1 year or more before the start of the study, ambulatory and able to undergo physical strength testing. Women treated with glucocorticoids within the year before the study, females with femoral and lumbar fractures and having persistent low back pain (Visual analog scale more than 7) were excluded. Assessment was done post scan.Correlation of T score of lumbar bone mineral density was correlated with each of the assessment values of isometric quadriceps strength, handgrip strength, core control and bone mass by body composition analyzer which was measured immediately post scan was found using Spearman’s test.
Results: In the study population, body mass index had a weak correlation with Lumbar Spine Bone mineral density (LS BMD) (r=0.209 , p = 0.08), quadriceps strength had a moderate correlation with LS BMD (r=0.661, p=0.000), handgrip strength also had a fair correlation with LS BMD (r=0.454, p=0.000), core had a good correlation to LS BMD (r=0.75p, p= 0.000), bone weight had a moderate correlation with LS BMD (r= 0.658, p= 0.000).
Conclusion(s): In the study population, core control had a good correlation with LS BMD. Quadriceps strength and handgrip strength had moderate and fair respective correlations with LS BMD. Bone mass measured by Body composition analyzer had a moderate correlation with LS BMD.
Implications: Quadriceps and handgrip strength should also be an important part of screening as well as rehabilitation of post menopausal women. Core control can be a mandatory part of the assessment in such population as there is a good correlation with lumbar BMD. Body composition analyzer can be used for measurement of bone mass roughly estimating bone density, in a community set up where access to DEXA is difficult. These clinically feasible devices can be used for screening in a community set up with large a population. Prediction equations can be generated using this study in future.
Funding, acknowledgements: None
Keywords: Post menopausal women, Bone mineral density, Muscle strength
Topic: Musculoskeletal: spine
Did this work require ethics approval? Yes
Institution: Sancheti Institute College of Physiotherapy
Committee: Institutional review board
Ethics number: IRB-SIOR/Agenda 051
All authors, affiliations and abstracts have been published as submitted.
