Changes in Body Composition in Older Adults after a Technology-Based Weight Loss Intervention

Area of Science:

• Gerontology
• Obesity Research
• Clinical Nutrition

Background:

• Obesity is a significant health concern in older adults, increasing the risk of chronic conditions.
• Weight loss interventions in this demographic require careful consideration to preserve lean mass.
• Remote interventions offer a scalable approach to managing weight in older populations.

Purpose of the Study:

• To evaluate the efficacy of a multicomponent, remote weight loss intervention in older adults (≥65 years).
• To assess changes in body composition, including fat mass, visceral fat, and fat-free mass.
• To determine if lean muscle mass and grip strength are maintained during the intervention.

Main Methods:

• Post-hoc analysis of a pre/post, single-arm, non-randomized intervention.
• Recruited 53 older adults (BMI ≥ 30 kg/m2) for a 6-month program.
• Utilized remote monitoring and video-conferencing for registered dietitian nutrition and physical therapy sessions.
• Assessed weight, height, and body composition via bioelectrical impedance analysis.

Main Results:

• Significant reductions observed in weight (4.6±3.5kg), fat mass (6.1±14.3kg), and visceral fat (0.78±1.69L) (p<0.05).
• Fat-free mass, appendicular lean mass, and grip strength showed no significant changes (p>0.05).
• These beneficial outcomes were maintained even when stratifying by 5% weight loss.

Conclusions:

• The remote, multicomponent intervention successfully reduced body fat and visceral fat in older adults.
• The program effectively preserved fat-free mass and appendicular lean muscle mass.
• This intervention model shows promise for managing obesity in older adults while safeguarding muscle health.