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01.12.2016 | Research article | Ausgabe 1/2016 Open Access

BMC Musculoskeletal Disorders 1/2016

Obesity is associated with more disability at presentation and after treatment in low back pain but not in neck pain: findings from the OIOC registry

Zeitschrift:
BMC Musculoskeletal Disorders > Ausgabe 1/2016
Autoren:
Maria M. Wertli, Ulrike Held, Marco Campello, Shira Schecter Weiner
Wichtige Hinweise

Competing interests

The authors declare no financial interests or affiliations with institutions, organizations, or companies relevant to the manuscript. All authors had full access to the data, interpreted the analysis and commented on the final manuscript.

Authors’ contributions

MW, MC, SSW conceived of the study and were responsible for the acquisition of data. UH and MW conducted the analysis. MW drafted the manuscript. All authors interpreted the data, were involved in revising the manuscript critically for important intellectual content and gave their final approval of the version to be published.

Abstract

Background

The influence on the treatment response in patients with low back pain (LBP) and neck pain (NP) is unknown. The aim of the study was to investigate the influence of body weight in patients with low back pain (LBP) and neck pain (NP) on baseline and end of treatment disability.

Methods

Cross-sectional analysis of baseline factors. Longitudinal analysis of prospectively collected patient information at an outpatient physical therapy registry (data from June 2010 to December 2012). WHO-BMI classification was used: underweight, lean, overweight, obesity class I, obesity class II and III. The influence of body weight and a predefined set of confounders was analyzed by multiple regression models.

Results

In LBP, disability increased with increasing BMI [lean = reference, obesity class I Beta 5.41 (95 % CI 0.75; 10.07), obesity class II-III Beta 7.58 (95 % CI 2.13; 13.03)]. Compared to lean patients, disability after treatment improved in overweight subjects [Beta −3.90 (95 % CI −7.4; −0.41)] but not in subjects with obesity class II–III [Beta 3.43 (95 % CI −3.81; 10.68)]. There were insufficient patients in the sample with severe obesity and therefore this trend has to be confirmed. The likelihood for meaningful important change (MID) was similar in all BMI subgroups. For patients with NP, BMI was not associated with baseline disability, and did not predict end of treatment disability or the likelihood of a MID. These findings must be interpreted with caution as BMI subgroups did not meet the required sample size.

Conclusion

Overweight and obesity are associated with higher levels of disability before treatment in LBP patients, but not in NP. In severely obese patients class II–III with LBP the rate of MID was lowest indicating that these patients experienced the least treatment response compared to the other groups. Further studies should address the impact of severe obesity on the prognosis of LBP. In patients with LBP, severe obesity may be an important factor to consider during the physical therapy treatment. In particular, combined treatment strategies combining weight management, cardiovascular fitness, and low back pain rehabilitation should be investigated.
Literatur
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