Muscular strength and physical function in elderly adults 6-18 months after a 12-week resistance exercise program.

• Published in: Scandinavian Journal of Public Health
• Main Authors: Geirsdottir, Olof Gudny, Arnarson, Atli, Ramel, A, Briem, Kristin, Jonsson, Palmi V, Thorsdottir, Igna
• Other Authors: The Icelandic Gerontological Research Center, Landspitali University Hospital & University of Iceland, Reykjavik, Iceland Unit for Nutrition Research, Landspitali University Hospital & Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland, Unit for Nutrition Research, Landspitali University Hospital & Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland, Department of Physical Therapy, University of Iceland, The Icelandic Gerontological Research Center, Landspitali University Hospital & University of Iceland, Reykjavik, Iceland Department of Geriatrics, Landspitali University Hospital, Reykjavik, Iceland
• Format: Article in Journal/Newspaper
• Language: English
• Published: Sage Publications 2015
• Subjects: Aldraðir; Líkamsrækt; Resistance Training; Muscle Contraction; Aged; Motor Activity; 80 and over; Follow-Up Studies; Humans; Leisure Activities; Male; Muscle Strength/physiology*; Physical Fitness/physiology*; Program Evaluation; Resistance Training*; Time Factors; Female; Smella; Iceland
• Online Access: http://hdl.handle.net/2336/338209; https://doi.org/10.1177/1403494814560842

Neðst á síðunni er hægt að nálgast greinina í heild sinni með því að smella á hlekkinn View/Open Benefits of resistance exercise in elderly people are well documented; however, sustaining these benefits can be difficult and adherence is often poor. Muscular strength and physical function usually decline after a supervised resistance exercise program (REP). We investigated these changes in older adults during an observational follow-up and whether leisure time physical activity (LTPA) or unsupervised resistance exercise (RE) limit these changes. Subjects (N=236, 73.7±5.7 years, 58.2% female) had participated in a supervised 12-week REP. Quadriceps strength and timed-up-and-go performance (TUG) at follow-up were compared to values before and after REP. Multivariate statistics were used to predict changes in strength or function. Two hundred and eleven (90.3%) participants completed REP and 149 (63.1%) completed follow-up (11.4±2.9 months). Quadriceps strength at follow-up decreased significantly compared to after REP (-27N), but was higher than before REP (+30N). TUG did not decrease during follow-up and was better than before REP (-0.9 seconds). LTPA (+38.0N, p<0.001) and RE (+31.6N, p=0.006) predicted strength at follow-up, although they did not completely prevent loss of strength during follow-up. CONCLUSIONS QUADRICEPS STRENGTH DECLINES AFTER A 12-WEEK RESISTANCE EXERCISE PROGRAM IN OLDER ADULTS NEITHER LTPA NOR RE COMPLETELY PREVENTS LOSS OF QUADRICEPS STRENGTH DURING FOLLOW-UP, ALTHOUGH THEY LIMITED THE LOSS TUG DID NOT CHANGE DURING FOLLOW-UP AND WAS BETTER AT FOLLOW-UP THAN BEFORE THE START OF THE RESISTANCE EXERCISE PROGRAM: IceProQualita project, the Icelandic Technology Development Fund (No 071323008), Research Fund of the University of Iceland, Landspitali University Hospital Research Fund, Helga Jonsdottir and Sigurlidi Kristjansson Geriatric Research Fund.