Background/Purpose: Physical activities (PA) practice is recommended by numerous public health organizations. According to international recommendations, patients with hip and knee osteoarthritis (OA) should be encouraged to undertake more specific activities: regular aerobic, muscle strengthening and range of motion exercises. However, the level of PA practice in patients with symptomatic hip and/or knee OA in a real setting is not well known and associations between PA practice and quality of life (QoL) should be clarified. The aim of the study was to study 1.the level of PA practice in patients with symptomatic hip and/or knee OA in a real setting 2. the associations between PA practice and QoL in patients with symptomatic hip and/or knee OA

Methods: The 878 patients of the KHOALA (Knee and Hip OsteoArthritis Long term assessment) cohort were included in the study. KHOALA cohort is a multiregional population based study of patients aged 45-75 years with symptomatic knee or/and hip OA. The MAQ (modifiable activity questionnaire) was used to measure the PA during the past year. It includes 2 scores: the numbers of hours spend weekly for physical activities in leisure activities (PAL) and in professional activities (PAP). QoL was measured by a generic questionnaire, the SF-36; pain, function, and clinical data by the Index of Severity for Knee (ISK) and the Harris hip score. All measures were completed at baseline. Multivariate linear-regression models were constructed to identify the associations between PA and QoL. The models were adjusted on OA functional and pain scores, age, sex, BMI, current smoking status, current employment status and occupation during their life.

Results: Among the 878 patients, 222 had hip OA, 607 knee OA and 49 both. Patients with hip and knee OA were slightly older (64.7+8) than those with knee (62+8.5) or hip OA only (61.2+8.8). The average body mass index was 26.9+4.4 and 30.3+6.2 for patients with hip and knee OA respectively. 67 and 71% of the patients were women in hip and knee OA respectively. The level of PAP was of 25 hours a week in patients with hip or knee OA only and was lower (20 hours a week) in patients with both hip and knee OA. The level PAL was of 5.6, 6.2, 6.5 hours a week for hip OA, knee OA and both respectively. No relation was observed between physical activities level and QoL in patients with hip OA. For patients followed for knee OA, more hours spend on leisure activities were associated with better mental health (p=0.001), role emotional (p=0.02), social functioning (p=0.04) and vitality (p<0.001) scores in multivariate analyses. The number of hours spent on professional activities by patients who suffered from both hip and knee OA were associated with lower role emotional (p=0.03) and social functioning (p=0.04) scores.

Conclusion: These results suggest that more hours spend weekly on leisure activities may positively affect patients with symptomatic knee and/or hip OA independently of pain, function and sociodemographic variables. The associations are found for mental state and social functioning. On the other hand, physical activities for professional reasons seemed to be associated with more difficulties in social functioning of patients with both hip and knee OA.

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ACR Meeting Abstracts - https://acrabstracts.org/abstract/what-are-the-levels-of-physical-activities-and-their-associations-with-quality-of-life-in-patients-with-symptomatic-hip-andor-knee-osteoarthritis/