Short-term, light- to moderate-intensity exercise training improves leg muscle strength in the oldest old: a randomized controlled trial - PubMed (original) (raw)
Randomized Controlled Trial
. 2011 Apr;59(4):594-602.
doi: 10.1111/j.1532-5415.2011.03356.x. Epub 2011 Mar 31.
Natalia Bustamante-Ara, Margarita Hierro Villarán, Pedro González Gil, Maria J Sanz Ibáñez, Nekane Blanco Sanz, Victor Ortega Santamaría, Natalia Gutiérrez Sanz, Ana B Marín Prada, Cristian Gallardo, Gabriel Rodríguez Romo, Jonatan R Ruiz, Alejandro Lucia
Affiliations
- PMID: 21453381
- DOI: 10.1111/j.1532-5415.2011.03356.x
Randomized Controlled Trial
Short-term, light- to moderate-intensity exercise training improves leg muscle strength in the oldest old: a randomized controlled trial
José A Serra-Rexach et al. J Am Geriatr Soc. 2011 Apr.
Abstract
Objectives: To assess the effects of an 8-week exercise training program with a special focus on light- to moderate-intensity resistance exercises (30-70% of one repetition maximum, 1RM) and a subsequent 4-week training cessation period (detraining) on muscle strength and functional capacity in participants aged 90 and older.
Design: Randomized controlled trial performed during March to September 2009.
Setting: Geriatric nursing home.
Participants: Forty nonagenarians (90-97) were randomly assigned to an intervention or control group (16 women and 4 men per group).
Intervention: Eight-week muscle strength exercise intervention focused on lower limb strength exercises of light to moderate intensity.
Primary outcome: 1RM leg press.
Secondary outcomes: handgrip strength, 8-m walk test, 4-step stairs test, Timed Up and Go test, and number of falls.
Results: A significant group by time interaction effect (P=.02) was observed only for the 1RM leg press. In the intervention group, 1RM leg press increased significantly with training by 10.6 kg [95% confidence interval (CI)=4.1-17.1 kg; P=.01]. Except for the mean group number of falls, which were 1.2 falls fewer per participant in the intervention group (95% CI=0.0-3.0; P=.03), no significant training effect on the secondary outcome measures was found.
Conclusion: Exercise training, even of short duration and light to moderate intensity, can increase muscle strength while decreasing fall risk in nonagenarians.
© 2011, Copyright the Authors. Journal compilation © 2011, The American Geriatrics Society.
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