Functional Status and Body Mass Index in Postmenopausal Women with Fibromyalgia: A Case-control Study.

Reduced functional capacity is a common characteristic of fibromyalgia (FMS). We aimed to investigate the relationship between functional status and body mass index (BMI) in a population with and without FMS. A pilot case-control study was performed in 34 women with FMS and 22 healthy controls which were classified according to their BMI. The main outcome measures were: Balance (MiniBestest, One Leg Stance Test), functional mobility (Timed up and Go), physical disability (Health Assessment Questionnaire Disability Index), spinal range of motion (Spinal Mouse), level of physical activity at work (Leisure Time Physical Activity Instrument), and home and leisure time (Physical Activity at Home and Work). Statistical differences were observed between overweight/obese healthy controls and women with FMS for several indicators of functional capacity. FMS patients reported worse dynamic (p = 0.001) and static balance (right: p = 0.002, left: p = 0.001), poorer functional mobility (p = 0.008), and higher levels of physical disability (p = 0.001). Functional status is altered in FMS women compared to the healthy control group, independently of nutritional status; therefore, BMI is unlikely to play a main role in functional capacity indicators in postmenopausal FMS women. Only dynamic balance seems to reduce the obesity status in this population.

The influence of balance, physical disability, strength, mechanosensitivity and spinal mobility on physical activity at home, work and leisure time in women with fibromyalgia.

BACKGROUND: Fibromyalgia syndrome is a chronic disease consisting of widespread pain, fatigue, sleep disturbances, and cognitive impairments, among other symptoms, which affect daily physical activity. However, the influence of functional status on physical activity involved in leisure, household and work activities has not been researched previously. The main objective was to evaluate balance, strength, spinal mobility, mechanosensitivity and function levels as related factors of physical activity in female with fibromyalgia. METHODS: Thirty-four patients with Fibromyalgia and 22 matched controls were included in a cross-sectional study. Dynamic and static balance, general and daily activities disability, lumbosacral mechanosensitivity, spinal range of motion, lower limb strength, physical activity in leisure, household and work activities were registered. We tested for differences between groups by using independent sample t-tests. The influence of demographics, symptoms and physical outcomes on physical activity was statistically analyzed using bivariate and multivariate regression analyses. FINDINGS: There was a significant association between leisure-time physical activity scores and age (r = 0.564), spinal flexion (r = 0.512), spinal extension (r = 0.421) and the total range of spinal inclination (r = 0.533). Fifty-eight percent of the variance of leisure-time physical activity was explained by age and range of spinal flexion-extension. Similarly, functional mobility was associated with physical activity at home and work scores (r = 0.459), explaining 21% of its variance. INTERPRETATION: A higher time spent in leisure, household and work activities was related to higher age, spinal range of motion and lower functional mobility in women with Fibromyalgia. Rehabilitation intervention programs should promote physical activity at home, work and leisure time.