Should physical activity programs be tailored when older adults have compromised function?

Area of Science:

• Gerontology
• Rehabilitation Science
• Physical Therapy

Background:

• Older adults are at risk for mobility disability, impacting independence.
• Traditional walking programs may not sufficiently address complex functional needs.
• Targeted interventions are needed to enhance physical function in aging populations.

Purpose of the Study:

• To compare the efficacy of a supplemented walking program (WALK+) versus a traditional walking program (WALK).
• To determine if WALK+ improves physical function more than WALK in older adults at risk for mobility disability.

Main Methods:

• 31 community-dwelling older adults (age 76±5 years, SPPB score 8.4±1.7) were randomized to WALK or WALK+.
• Both interventions consisted of 18 progressive sessions (1 hr, 3x/wk).
• Physical function was assessed using the Short Physical Performance Battery (SPPB) and 400-m walk time.

Main Results:

• Older adults with low baseline function in the WALK+ group showed substantial SPPB improvement (2.2±0.7).
• A similar subset in the WALK group showed only minor SPPB improvement (0.3±0.5).
• These findings suggest differential benefits based on intervention type and baseline function.

Conclusions:

• Preliminary data suggest that the WALK+ program may be more effective for improving physical function in older adults with lower baseline mobility.
• Tailoring interventions to individual baseline physical function levels is crucial for optimizing outcomes in older adults.
• Further research with larger sample sizes is warranted to confirm these findings.