T O Smith1, M Mansfield2, J Dainty3, G Hilton4, C J V Mann5, C M Sackley6. 1. School of Health Sciences, Faculty of Medicine and Health Sciences, University of East Anglia, Queen's Building, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom. Electronic address: toby.smith@uea.ac.uk. 2. Guy's and St Thomas' Hospitals NHS Foundation Trust and Academic Department of Physiotherapy, King's College London, United Kingdom. Electronic address: michael.mansfield@gstt.nhs.uk. 3. Norwich Medical School, University of East Anglia, Norwich, United Kingdom. Electronic address: jack.dainty@uea.ac.uk. 4. The Royal Ballet, Covent Garden, London, United Kingdom. Electronic address: gemmahilton@sixphysio.com. 5. Department of Trauma and Orthopaedics, Norfolk and Norwich University Hospital, Norwich, United Kingdom. Electronic address: charles.mann@nnuh.nhs.uk. 6. Division of Health and Social Care Research, King's College, London, United Kingdom. Electronic address: catherine.sackley@kcl.ac.uk.
Abstract
OBJECTIVES: To determine whether physical activity measured using the Physical Activity Scale for the Elderly (PASE), changes during the initial 24 months post-total hip (THR) or knee replacement (TKR), and how this compares to a matched non-arthroplasty cohort. DESIGN: Case-controlled study analysis of a prospectively collected dataset. SETTING: USA community-based. PARTICIPANTS: 116 people post-THR, 105 people post-TKR compared to 663 people who had not undergone THR or TKR, or had hip or knee osteoarthritis. Cohorts were age-, gender- and BMI-matched. MAIN OUTCOME MEASURES: Physical activity assessed using the 12-item PASE at 12 and 24 months post operatively. RESULTS: There was no significant difference in total PASE score between pre-operative to 12 months (mean: 136 vs 135 points; p=0.860) or 24 months following THR (mean: 136 vs 132 points; p=0.950). Whilst there was no significant difference in total PASE score from pre-operative to 12 months post-TKR (126 vs 121 points; p=0.930), by 24 months people following TKR reported significantly greater physical activity (126 vs 142 points; p=0.040). There was no statistically significant difference in physical activity between the normative matched and THR (p≥0.140) or TKR (p≥0.060) cohorts at 12 or 24 months post joint replacement. CONCLUSIONS: Physical activity is not appreciably different to pre-operative levels at 12 or 24 months post-THR, but was greater at 24 months following TKR. Health promotion strategies are needed to encourage greater physical activity participation following joint replacement, and particularly targeting those who undergo THR.
OBJECTIVES: To determine whether physical activity measured using the Physical Activity Scale for the Elderly (PASE), changes during the initial 24 months post-total hip (THR) or knee replacement (TKR), and how this compares to a matched non-arthroplasty cohort. DESIGN: Case-controlled study analysis of a prospectively collected dataset. SETTING: USA community-based. PARTICIPANTS: 116 people post-THR, 105 people post-TKR compared to 663 people who had not undergone THR or TKR, or had hip or knee osteoarthritis. Cohorts were age-, gender- and BMI-matched. MAIN OUTCOME MEASURES: Physical activity assessed using the 12-item PASE at 12 and 24 months post operatively. RESULTS: There was no significant difference in total PASE score between pre-operative to 12 months (mean: 136 vs 135 points; p=0.860) or 24 months following THR (mean: 136 vs 132 points; p=0.950). Whilst there was no significant difference in total PASE score from pre-operative to 12 months post-TKR (126 vs 121 points; p=0.930), by 24 months people following TKR reported significantly greater physical activity (126 vs 142 points; p=0.040). There was no statistically significant difference in physical activity between the normative matched and THR (p≥0.140) or TKR (p≥0.060) cohorts at 12 or 24 months post joint replacement. CONCLUSIONS: Physical activity is not appreciably different to pre-operative levels at 12 or 24 months post-THR, but was greater at 24 months following TKR. Health promotion strategies are needed to encourage greater physical activity participation following joint replacement, and particularly targeting those who undergo THR.
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