Abstract
ABSTRACT BACKGROUND AND OBJECTIVES: Chronic low back pain syndrome promotes several functional losses which impact quality of life of patients, and walking is one of the most impaired functions. Being chronic low back pain a syndrome with multiple etiologies, efforts to understand the relation between functional losses and etiologic factors are justified. This study aimed at correlating walking speed with pain perception, incapacity level (I) and condition of having or not chronic low back pain (group). METHODS: Sample was made up of volunteers with nonspecific low back pain (LG/n=8) and healthy subjects (CG/n=8). Incapacity level was obtained by Oswestry Incapacity Index during evaluation. Tests battery was divided in three sessions according to walking intensity, as follows: preferred self-selected speed (VP) and faster and slower speeds as compared to VP. In each session, volunteers walked for five minutes and at every minute pain was quantified by the analog scale. Kendal Tau test was used with p=0.05. RESULTS: Walking speed was not correlated with pain intensity, with incapacity level or with the group. However, group versus incapacity level, group versus pain, incapacity level versus pain were correlated with one another. CONCLUSION: Walking performance was not influenced by nonspecific chronic low back pain and by incapacity level.
Highlights
Low back pain is a syndrome-based condition with high prevalence in the global population
The hypothesis of this study proposes that patients with chronic nonspecific low back pain are less able to adapt their spatial-temporal parameters and the walking speed variation performed at different intensities is positively correlated with perceived painful intensity and level of disability
The sample consisted of 21 volunteers (CG/n=10; low back pain group (LG)/n=11) and statistical differences were not found in age and in anthropometric characteristics between groups: age control group (CG) 37.7±6.4/ LG 43.6±10.6/T(19)= -1.525; p=0.144; height CG 177.3±8.0/LG 165.5±10.1/T(19)=1.757; p=0.095; body mass CG 73.3±10.0/LG 72.1±15.8/T(19)=0.189; p=0.852; lower limbs CG 0.90±0.05/LG 0.84±0.08/T(19)=1.863; p=0.078
Summary
Low back pain is a syndrome-based condition with high prevalence in the global population. Healthcare professionals may recognize the nature of chronic low back pain using several models proposed in the scientific literature (pathological, neurophysiological, signs and symptoms, biopsychosocial, motor control, among others). These models often lead clinicians to adopt unidimensional therapeutic interventions rather than multidimensional ones[5] increasing the chances of obtaining less-than-ideal results. Considering the difference in the contributions of various studies, the aim of this study was to correlate walking speed (WS) with pain perception, level of disability (LD) and condition of having or not chronic nonspecific low back pain (group).
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