Daniel E Kammire1, Michael P Walkup2, Walter T Ambrosius2, Leon Lenchik3, Sue A Shapses4, Barbara J Nicklas5, Denise K Houston5, Anthony P Marsh1, W Jack Rejeski1, Kristen M Beavers1. 1. Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina, USA. 2. Department of Biostatistics and Data Science, School of Medicine, Wake Forest University, Winston-Salem, North Carolina, USA. 3. Department of Radiology, School of Medicine, Wake Forest University, Winston-Salem, North Carolina, USA. 4. Department of Nutritional Sciences, Rutgers University, New Brunswick, New Jersey, USA. 5. Department of Internal Medicine, School of Medicine, Wake Forest University, Winston-Salem, North Carolina, USA.
Abstract
OBJECTIVE: This study aimed to examine change in bone mineral density (BMD) and trabecular bone score among older adult weight regainers (WR) and weight maintainers (WM). METHODS: Observational data come from 77 older adults (mean age: 67 [SD 5] years; 69% women; 70% white) with obesity (mean BMI: 33.6 [SD 3.7] kg/m2 ) who lost weight during an 18-month weight loss intervention. Total body mass and body composition, along with regional (total hip, femoral neck, lumbar spine) BMD and trabecular bone score, were measured at baseline, 18 months, and 30 months. WR (n = 36) and WM (n = 41) categories were defined as a ≥ 5% or < 5% weight gain from 18 to 30 months, respectively. RESULTS: Among skeletal indices, only total hip BMD was significantly reduced during the 18-month intervention period in both WRs (-3.9%; 95% CI: -5.8% to -2.0%) and WMs (-2.4%; 95% CI: -4.3% to -0.5%; P = 0.07). After adjustment for relevant baseline covariates and weight change from 0 to 18 months, 30-month change in total hip BMD was -2.6% (95% CI: -4.3% to -0.9%) and -3.9% (95% CI: -5.7% to -2.1%) among WRs and WMs, respectively (P = 0.07). CONCLUSIONS: Loss of hip BMD persists in the year after a weight loss intervention among older adults with obesity, regardless of weight regain status.
RCT Entities:
OBJECTIVE: This study aimed to examine change in bone mineral density (BMD) and trabecular bone score among older adult weight regainers (WR) and weight maintainers (WM). METHODS: Observational data come from 77 older adults (mean age: 67 [SD 5] years; 69% women; 70% white) with obesity (mean BMI: 33.6 [SD 3.7] kg/m2 ) who lost weight during an 18-month weight loss intervention. Total body mass and body composition, along with regional (total hip, femoral neck, lumbar spine) BMD and trabecular bone score, were measured at baseline, 18 months, and 30 months. WR (n = 36) and WM (n = 41) categories were defined as a ≥ 5% or < 5% weight gain from 18 to 30 months, respectively. RESULTS: Among skeletal indices, only total hip BMD was significantly reduced during the 18-month intervention period in both WRs (-3.9%; 95% CI: -5.8% to -2.0%) and WMs (-2.4%; 95% CI: -4.3% to -0.5%; P = 0.07). After adjustment for relevant baseline covariates and weight change from 0 to 18 months, 30-month change in total hip BMD was -2.6% (95% CI: -4.3% to -0.9%) and -3.9% (95% CI: -5.7% to -2.1%) among WRs and WMs, respectively (P = 0.07). CONCLUSIONS:Loss of hip BMD persists in the year after a weight loss intervention among older adults with obesity, regardless of weight regain status.
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