Luís B Sardinha1, Diana A Santos2, Analiza M Silva2, Fátima Baptista2, Neville Owen3. 1. Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Portugal. lsardinha@fmh.ulisboa.pt. 2. Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Portugal. 3. Behavioural Epidemiology Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia.
Abstract
BACKGROUND: Physical function is a key determinant that corresponds to the physiological capacity of older adults to perform normal everyday activities, safely and independently, without undue fatigue. We examined the associations of sedentary behavior (SB), breaks in sedentary time (BST), and moderate-to-vigorous physical activity (MVPA) with physical function in older adults. METHODS: Physical activity and SB were assessed with accelerometers (ActiGraph, GT1M) and physical function with the Senior Fitness Test battery, among 87 males and 128 females aged between 65 and 94 years. A composite Z-score was created based on the individual scores for each Senior Fitness Test battery item. Associations of SB, BST, and MVPA with physical function were examined, adjusting for demographic attributes, physical independence, and medical status. RESULTS: A significant positive association was found between BST and the composite physical function Z-score, after adjusting for total SB, MVPA, and potential confounders. MVPA was also positively associated with physical function, after adjusting for SB, BST, and potential confounders. Those with low BST in conjunction with performing less than 30min/d of MVPA had lower physical function. CONCLUSIONS: Breaking-up sedentary time is associated with better physical function in older adults; and, it may have an important place in future guidelines on preserving older adults' physical function to support activities of daily living.
BACKGROUND: Physical function is a key determinant that corresponds to the physiological capacity of older adults to perform normal everyday activities, safely and independently, without undue fatigue. We examined the associations of sedentary behavior (SB), breaks in sedentary time (BST), and moderate-to-vigorous physical activity (MVPA) with physical function in older adults. METHODS: Physical activity and SB were assessed with accelerometers (ActiGraph, GT1M) and physical function with the Senior Fitness Test battery, among 87 males and 128 females aged between 65 and 94 years. A composite Z-score was created based on the individual scores for each Senior Fitness Test battery item. Associations of SB, BST, and MVPA with physical function were examined, adjusting for demographic attributes, physical independence, and medical status. RESULTS: A significant positive association was found between BST and the composite physical function Z-score, after adjusting for total SB, MVPA, and potential confounders. MVPA was also positively associated with physical function, after adjusting for SB, BST, and potential confounders. Those with low BST in conjunction with performing less than 30min/d of MVPA had lower physical function. CONCLUSIONS: Breaking-up sedentary time is associated with better physical function in older adults; and, it may have an important place in future guidelines on preserving older adults' physical function to support activities of daily living.
Authors: Dori E Rosenberg; John Bellettiere; Paul A Gardiner; Veronica N Villarreal; Katie Crist; Jacqueline Kerr Journal: J Gerontol A Biol Sci Med Sci Date: 2015-08-13 Impact factor: 6.053
Authors: Jennifer A Schrack; Pei-Lun Kuo; Amal A Wanigatunga; Junrui Di; Eleanor M Simonsick; Adam P Spira; Luigi Ferrucci; Vadim Zipunnikov Journal: J Gerontol A Biol Sci Med Sci Date: 2019-03-14 Impact factor: 6.053
Authors: L Sagarra-Romero; G Vicente-Rodríguez; R Pedrero-Chamizo; S Vila-Maldonado; N Gusi; J G Villa-Vicente; L Espino; M González-Gross; J A Casajús; I Ara; A Gómez-Cabello Journal: J Nutr Health Aging Date: 2019 Impact factor: 4.075
Authors: Sheri J Hartman; Catherine R Marinac; John Bellettiere; Suneeta Godbole; Loki Natarajan; Ruth E Patterson; Jacqueline Kerr Journal: Support Care Cancer Date: 2017-03-22 Impact factor: 3.603
Authors: John Bellettiere; Genevieve N Healy; Michael J LaMonte; Jacqueline Kerr; Kelly R Evenson; Eileen Rillamas-Sun; Chongzhi Di; David M Buchner; Melbourne F Hovell; Andrea Z LaCroix Journal: J Gerontol A Biol Sci Med Sci Date: 2019-02-15 Impact factor: 6.053
Authors: Andrew S Layne; Fang-Chi Hsu; Steven N Blair; Shyh-Huei Chen; Jennifer Dungan; Roger A Fielding; Nancy W Glynn; Alexandra M Hajduk; Abby C King; Todd M Manini; Anthony P Marsh; Marco Pahor; Christine A Pellegrini; Thomas W Buford Journal: Arch Phys Med Rehabil Date: 2016-08-25 Impact factor: 3.966
Authors: N Reid; G N Healy; J Gianoudis; M Formica; P A Gardiner; E E Eakin; C A Nowson; R M Daly Journal: Osteoporos Int Date: 2018-02-26 Impact factor: 4.507