Opin vísindi

Obesity, Physical Function, and Training Success in Community-Dwelling Nonsarcopenic Old Adults

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Geirsdottir, Olof
dc.contributor.author Chang, Milan
dc.contributor.author Jónsson, Pálmi V.
dc.contributor.author Thorsdottir, Inga
dc.contributor.author Ramel, Alfons
dc.date.accessioned 2020-10-09T09:52:42Z
dc.date.available 2020-10-09T09:52:42Z
dc.date.issued 2019-02-18
dc.identifier.citation O. G. Geirsdottir, M. Chang, P.V. Jonsson, I. Thorsdottir, A. Ramel, "Obesity, Physical Function, and Training Success in Community-Dwelling Nonsarcopenic Old Adults", Journal of Aging Research, vol. 2019, Article ID 5340328, 10 pages, 2019. https://doi.org/10.1155/2019/5340328
dc.identifier.issn 2090-2204
dc.identifier.issn 2090-2212 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/2105
dc.description Publisher's version (útgefin grein)
dc.description.abstract Objectives. Obesity-related physiological changes can limit improvements of obese subjects after training. The aim was to investigate obesity, muscular strength, and physical function in community-dwelling nonsarcopenic old adults. Methods. Nonsarcopenic subjects (N=229, 73.7 ± 5.7 years; 21% normal weight, 42% overweight, and 37% obese based on body mass index (BMI)) participated in a 12-week resistance exercise program. Leisure time physical activity (LTPA), body composition (dual-energy X-ray absorptiometry), quadriceps strength (maximum voluntary isometric contraction; absolute and relative to body weight), and physical function in terms of 6-minutes-walk-for-distance (6MWD) and timed up and go (TUG) were measured baseline and endpoint. Results. At baseline, normal weight participants had lower absolute quadriceps strength (-43 ± 22 N, P=0.015) than obese, but better quadriceps strength relative to body weight (1.4 ± 0.7 N/kg, P<0.001), 6MWD (53 ± 27 m, P<0.001), and TUG (-1.4 ± 0.7 sec, P≤0.001). LTPA was positively associated with 6MWD and TUG (both P<0.05), but based on general linear models, differences in LTPA between BMI categories did not explain differences in 6MWD and TUG between BMI categories. During the program, dropout (11.9%) and attendance (85%) were similar between BMI groups. After the intervention, body composition and physical function significantly improved in all three BMI categories; however, normal weight participants lost more body fat (-1.53 ± 0.78%, P=0.014), gained more lean mass (0.70 ± 0.36 kg, P<0.001) and relative quadriceps strength (0.31 ± 0.16 N/kg, P=0.017), and improved more on the 6MWD (24 ± 12 m, P<0.001) but gained less grip strength (-2.4 ± 1.3 N/kg, P=0.020) compared to obese. There were no differences in TUG or absolute quadriceps strength changes between the BMI strata. Physical function at baseline as well as training success of overweight participants was located between the normal weight and obesity groups. Conclusion. Nonsarcopenic obese community-dwelling old adults have lower physical function than their normal weight counterparts. This difference is not explained by lower LTPA. A 12-week resistance exercise program improves body composition and physical function in normal weight, overweight, and obese old adults; however, obese participants experience less favorable changes in body composition and physical function than normal weight individuals. This trial is registered with NCT01074879.
dc.description.sponsorship This study was part of the IceProQualita project, which was funded by the Icelandic Technology Development Fund (no 071323008), Research Fund of the University of Iceland, a grant from Landspitali University Hospital Research Fund, and the Helga Jonsdottir and Sigurlidi Kristjansson Geriatric Research Fund.
dc.format.extent 1-10
dc.language.iso en
dc.publisher Hindawi Limited
dc.relation.ispartofseries Journal of Aging Research;2019
dc.rights info:eu-repo/semantics/openAccess
dc.subject Geriatrics and Gerontology
dc.subject Obesity
dc.subject Muscular strength
dc.subject Physical function
dc.subject Öldrunarfræði
dc.subject Offita
dc.subject Aldraðir
dc.title Obesity, Physical Function, and Training Success in Community-Dwelling Nonsarcopenic Old Adults
dc.type info:eu-repo/semantics/article
dcterms.license This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.description.version Peer Reviewed
dc.identifier.journal Journal of Aging Research
dc.identifier.doi 10.1155/2019/5340328
dc.contributor.department Matvæla- og næringarfræðideild (HÍ)
dc.contributor.department Faculty of Food Science and Nutrition (UI)
dc.contributor.school Heilbrigðisvísindasvið (HÍ)
dc.contributor.school School of Health Sciences (UI)
dc.contributor.school Menntavísindasvið (HÍ)
dc.contributor.school School of Education (UI)

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