Naslov
Muscle strength and bone density in patients with different rheumatic conditions: cross-sectional study

Autori
Cvijetić, Selma ; Grazio, Simeon ; Gomzi, Milica ; Krapac, Ladislav ; Nemčić, Tomislav ; Uremović, Melita ; Bobić, Jasminka

Izvornik
Croatian medical journal (0353-9504) 52 (2011), 2; 164-170

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
muscle strength; rheumatic diseases; bone density; osteoarthritis; body mass index; hand joints

Sažetak
Aim was to explore the relationship between muscle strength and bone density in patients with different rheumatic diseases and to examine whether the inflammatory arthritis was potentially more harmful for muscle strength and bone loss than degenerative joint diseases. The study participants were 348 men and women, with a mean (+ standard deviation) age of 60.5+11.4 years, with different rheumatic conditions: regional syndromes, osteoarthritis (OA) of the hands, shoulders, knees and hips and inflammatory arthritis. Maximum voluntary back strength was measured by isometric dynamometry. Bone mineral density (BMD ; g/cm2) of the lumbar spine, femoral neck and distal radius was measured by dual-energy X-ray absorptiometry. Anthropometry and lifestyle characteristics were also assessed. Back strength was lowest in patients with hand and shoulder osteoarthritis (20.0+17.9 kg), followed by with patients with inflammatory arthritis (24.8+19.2 kg). Patients with inflammatory arthritis had lowest BMD at the mid-radius (0.650+0.115 g/cm2) and femoral neck (0.873+0.137 g/cm2) while the patients with hand and shoulder osteoarthritis had the lowest BMD at the mid-radius (0.660+0.101). In both sexes, muscle strength was significantly lower in patients who had lower BMD (T score < -1.0). Significant predictors of back strength were spine BMD (P=0.024) and body mass index (P=0.004) in men and femoral neck BMD in women (P=0.004). Muscle strength decline may be involved in bone loss in patients with rheumatic conditions, especially in those with inflammatory joint diseases.

Izvorni jezik
Engleski

Znanstvena područja
Javno zdravstvo i zdravstvena zaštita, Psihologija

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