Journal
NUTRIENTS
Volume 12, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/nu12082422
Keywords
osteoarthritis; sarcopenia; arthroplasty; protein supplement; exercise training; muscle mass; physical function
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Funding
- Taipei Medical University-Shuang Ho Hospital, Ministry of Health and Welfare, Taiwan [109TMU-SHH-13]
- Taipei Medical University
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Aging and osteoarthritis (OA) are associated with a high risk of muscle mass loss, which can lead to physical disability. This study investigated the effectiveness of protein supplementation combined with exercise training (PS + ET) in improving muscle mass and functional outcomes in older adults with lower-limb OA. A comprehensive search of online databases was performed to identify randomized controlled trials (RCTs) on the effectiveness of PS + ET in older adults with hip or knee OA. Meta-analysis and risk of bias assessment of the included RCTs were conducted. Six RCTs were included in this systemic review; they had a median (range/total) Physiotherapy Evidence Database (PEDro) score of 7 (6-9) out of 10, respectively. Five RCTs that enrolled patients who underwent total joint replacement were included in this meta-analysis. The PS + ET group exhibited significant improvements in muscle mass (standard mean difference [SMD] = 1.13,p< 0.00001), pain (SMD = 1.36,p< 0.00001), and muscle strength (SMD = 0.44,p= 0.04). Our findings suggest that PS + ET improves muscle mass, muscle strength, and functional outcomes and reduces pain in older adults with lower-limb OA, particularly in those who have undergone total joint replacement.
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