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

We conducted a post-hoc analysis of a pre/post, single-arm, nonrandomized, multicomponent weight loss intervention in older adults. Fifty-three older adults aged >= 65 with a body mass index >= 30 kg/m(2) were recruited to participate in a six-month, remote monitoring and video-conferencing delivered, prescriptive intervention consisting of individual and group-led registered dietitian nutrition and physical therapy sessions. We assessed weight, height, and body composition using a SECA 514 bioelectrical impedance analyzer. Mean age was 72.9 +/- 3.9 years (70% female) and all had >= 2 chronic conditions. Of those with complete data (n=30), we observed a 4.6 +/- 3.5kg loss in weight, 6.1 +/- 14.3kg (1.9%) loss in fat mass, and 0.78 +/- 1.69L loss in visceral fat (all p<0.05). Fat-free mass (-3.4kg +/- 6.8, p=0.19), appendicular lean mass (-0.25 +/- 1.83, p=0.22), and grip strength (+3.46 +/- 7.89, p=0.56) did not significantly change. These variables were preserved after stratifying by 5% weight loss. Our intervention led to significant body and visceral fat loss while maintaining fat-free and appendicular lean muscle mass.