The effects of multidimensional home-based exercise on functional performance in elderly people.
BACKGROUND
This study tested the hypothesis that a home-based exercise program would improve functional performance in elderly people.


METHODS
We conducted a 6-month, single-blinded, randomized controlled trial. 72 community dwelling men and women (aged >/=70 years) with self-reported and laboratory-based functional impairment were recruited for the study. Participants were randomly assigned to either a home-based progressive strength, balance, and general physical activity intervention or an attention-control group that received home-based nutrition education. Functional performance was measured in the laboratory using the Physical Performance Test (PPT) and the Established Populations for Epidemiologic Studies of the Elderly (EPESE) short physical performance battery. Physiologic capacity was measured by strength (one repetition maximum), dynamic balance (tandem walk), gait speed (2-meter walk), and cardiovascular endurance (6-minute walk).


RESULTS
70 participants (97%) completed the 6-month trial. Compliance with study interventions within each group ranged from 75% in controls to 82% in exercisers. PPT increased by 6.1 +/- 13.4% in exercisers and decreased by 2.8 +/- 13.6% in controls (p =.02). EPESE improved by 26.2 +/- 37.5% in exercisers and decreased by 1.2 +/- 22.1% in controls (p =.001). Dynamic balance improved by 33.8 +/- 14.4% in exercisers versus 11.5 +/- 23.7% in controls (p =.0002). There were no differences between groups in the change in strength, gait speed, or cardiovascular endurance.


CONCLUSIONS
Minimally supervised exercise is safe and can improve functional performance in elderly individuals. The improvements in functional performance occurred along with improvements in balance but without a significant change in muscle strength or endurance.
John Hancock Center for Physical Activity and Nutrition, Friedman School of Nutrition Science and Policy, Tufts University, Medford, Massachusetts, USA.
Miriam E
ME
Nelson
Jennifer E
JE
Layne
Melissa J
MJ
Bernstein
Andrea
A
Nuernberger
Carmen
C
Castaneda
David
D
Kaliton
Jeffrey
J
Hausdorff
James O
JO
Judge
David M
DM
Buchner
Ronenn
R
Roubenoff
Maria A
MA
Fiatarone Singh
D000203:Activities of Daily Living; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D015444:Exercise; D017079:Exercise Tolerance; D005260:Female; D015577:Geriatric Assessment; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D010807:Physical Endurance / Q000502:physiology*; D010809:Physical Fitness; D011336:Probability; D011788:Quality of Life; D012016:Reference Values; D012307:Risk Factors; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D016037:Single-Blind Method