Autor(es): Gobbo, Luis Alberto [UNESP] ; Judice, Pedro B. ; Hetherington-Rauth, Megan ; Sardinha, Luis B. ; Dos Santos, Vanessa Ribeiro [UNESP]
Data: 2021
Identificador Persistente: http://hdl.handle.net/11449/209648
Origem: Oasisbr
Assunto(s): acceleration; bone health; exercise; physical health; sedentary living
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CoordenacAo de Aperfeicoamentode Pessoal de Nivel Superior, Brazil
NIH
Portuguese Foundation for Science and Technology
Aging causes some unfavorable morphological and functional changes, such as the decline in bone mineral density (BMD) and physical function. Moderate-to-vigorous physical activity (MVPA) and sedentary time seem to be related with these alterations, but the impact of distinct patterns remains unclear. The aim of this study was to cross-sectionally and prospectively assess the association between objectively measured MVPA and sedentary patterns (bouts and breaks) with BMD and physical function in older adults. The study considered 151 Brazilians (aged >= 60 years), out of which 68 participants completed 2-year follow-up measurements. MVPA and sedentary patterns were measured by means of accelerometry, BMD-(total proximal femur and lumbar spine (L1-L4)) by means of dual-energy X-ray absorptiometry (DXA), and physical function-by means of physical tests. In older women, sedentary bouts >60 min were inversely associated with handgrip strength (beta = -2.03, 95% CI: from -3.43 to -0.63). The prospective analyses showed that changes in sedentary bouts (20 to 30 min and >60 min) were inversely associated with changes in the lumbar spine's BMD (beta = -0.01, 95% CI: from -0.01 to -0.00 and beta = -0.03, 95% CI: from -0.06 to -0.01) and the lumbar spine's T-score (beta = -0.06, 95% CI: from -0.10 to -0.01 and beta = -0.27, 95% CI: from -0.49 to -0.04), respectively. In older women, sedentary patterns are cross-sectionally associated with handgrip strength and prospectively associated with BMD independent of MVPA.
Sao Paulo State Univ, Sch Technol & Sci, Dept Phys Educ, Skeletal Muscle Assessment Lab, BR-19060900 Sao Paulo, Brazil
Sao Paulo State Univ, Sch Technol & Sci, Postgrad Program Movement Sci, BR-19060900 Sao Paulo, Brazil
Univ Lisbon, Fac Motricidade Humana, CIPER, Exercise & Hlth Lab, P-1649004 Cruz Quebrada, Portugal
Univ Lusofona, Ctr Invest Desporto Educ Fis & Exercicio & Saude, CIDEFES, P-1749024 Lisbon, Portugal
Sao Paulo State Univ, Sch Technol & Sci, Dept Phys Educ, Skeletal Muscle Assessment Lab, BR-19060900 Sao Paulo, Brazil
Sao Paulo State Univ, Sch Technol & Sci, Postgrad Program Movement Sci, BR-19060900 Sao Paulo, Brazil
CoordenacAo de Aperfeicoamentode Pessoal de Nivel Superior, Brazil: 001
CoordenacAo de Aperfeicoamentode Pessoal de Nivel Superior, Brazil: PDSE 88881.132107/2016-01
NIH: Z01 DK071013
Portuguese Foundation for Science and Technology: SFRH/BPD/115977/2016
