Meng, T and Antony, B and Venn, A and Eckstein, F and Cicuttini, F and March, L and Cross, M and Dwyer, T and Blizzard, L and Jones, G and Laslett, LL and Ding, C, Association of body composition, physical activity and physical performance with knee cartilage thickness and bone area in young adults, Rheumatology pp. 1-10. ISSN 1462-0324 (2019) [Refereed Article]
Copyright The Author(s) 2019. Published by Oxford University Press on behalf of the British Society for Rheumatology.
Methods: Body composition, physical activity and physical performance were measured 4-5 years prior to knee MRI. Cartilage thickness and bone area were measured quantitatively from MRI. Associations were assessed using linear regression analysis, with mediators being identified using mediation analysis.
Results: Participants (n = 186) were 31-41 years of age when the MRI was acquired and 48% were female. Greater lean mass was positively associated with cartilage thickness [β = 6.52 μm/kg (95% CI 0.86, 12.18)] and bone area [β = 13.37 mm2/kg (95% CI 5.43, 21.31)]. Physical performance measures were positively associated with cartilage thickness [long jump: β = 2.44 μm/cm (95% CI 0.70, 4.18); hand grip strength: 7.74 μm/kg (95% CI 1.50, 13.98); physical work capacity: 1.07 μm/W (95% CI 0.29, 1.85)] and bone area [long jump: β = 3.99 mm2/cm (95% CI 0.64, 7.34); hand grip strength: 19.06 mm2/kg (95% CI 7.21, 30.92); leg strength: 3.18 mm2/kg (95% CI 1.09, 5.28); physical work capacity: 3.15 mm2/W (95% CI 1.70, 4.60)]. Mediation analysis suggested these associations were mediated by lean mass (effect mediated: 27-95%).
Conclusion: Greater lean mass and better physical performance measured 4-5 years prior were associated with greater knee cartilage thickness and subchondral bone area in young adults, and the associations of physical performance were largely mediated by lean mass. These findings suggest lean mass may play an important role in maintaining knee joint health in young adults.
|Item Type:||Refereed Article|
|Keywords:||osteoarthritis, knee, cartilage, epidemiology, MRI|
|Research Division:||Medical and Health Sciences|
|Research Group:||Clinical Sciences|
|Research Field:||Rheumatology and Arthritis|
|Objective Group:||Clinical Health (Organs, Diseases and Abnormal Conditions)|
|Objective Field:||Skeletal System and Disorders (incl. Arthritis)|
|UTAS Author:||Meng, T (Mr Tao Meng)|
|UTAS Author:||Antony, B (Dr Benny Eathakkattu Antony)|
|UTAS Author:||Venn, A (Professor Alison Venn)|
|UTAS Author:||Dwyer, T (Professor Terry Dwyer)|
|UTAS Author:||Blizzard, L (Professor Leigh Blizzard)|
|UTAS Author:||Jones, G (Professor Graeme Jones)|
|UTAS Author:||Laslett, LL (Dr Laura Laslett)|
|UTAS Author:||Ding, C (Professor Chang-Hai Ding)|
|Deposited By:||Menzies Institute for Medical Research|
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