Repeated lifestyle interventions lead to progressive weight loss: A retrospective review chart study

TY - JOUR

T1 - Repeated lifestyle interventions lead to progressive weight loss

T2 - A retrospective review chart study

AU - Dandanell, Sune

AU - Ritz, Christian

AU - Verdich, Elisabeth

AU - Dela, Flemming

AU - Helge, Jørn Wulff

N1 - CURIS 2017 NEXS 122

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Aims: This study aimed to investigate whether repeated lifestyle interventions lead to progressive weight loss or to weight cycling. Methods: A retrospective review chart study with follow-up on 2120 participants (mean±SD age 36±15 years; body weight 116±28 kg; fat 43±6%). All had participated in one to four 11-12 week lifestyle interventions (residential weight loss programme, mixed activities). Weight loss was promoted through a hypocaloric diet ('500 to '700 kcal/day) and daily physical activity (1-3 hours/day). Primary outcomes were weight loss and change in body composition (bioimpedance measurements) after the intervention periods and at follow-up. Results: A total of 2120, 526, 139 and 47 people participated in one to four interventions with mean±SEM times from start to follow-up of 1.3±0.1, 2.9±0.2, 4.2±0.3 and 5.2±0.4 years respectively. Overall 50, 41, 18 and 11% of the participants were lost to follow-up after one to four interventions, respectively. The cumulated weight loss at follow-up increased with the number of interventions from one to four: 12.2±0.1, 15.9±0.7, 16.1±1.2 and 18.5±2.0 kg (p<0.001). The ratios between cumulated loss of fat and fat free mass after one to four interventions decreased with the number of interventions (2.4, 2.2, 2.1 and 1.4). Rates of weight loss during the interventions ranged from 0.70±0.06 to 1.06±0.01 kg/week and the maximum weight regain during the follow-up periods was 0.039±0.007 kg/week. Conclusions: Repeated relatively short lifestyle interventions in a selected and motivated group can be an efficient method for weight loss maintenance with only limited body weight cycling in the interim periods. However, the relationship between loss of fat and fat free mass might change in an unfavourable direction.

AB - Aims: This study aimed to investigate whether repeated lifestyle interventions lead to progressive weight loss or to weight cycling. Methods: A retrospective review chart study with follow-up on 2120 participants (mean±SD age 36±15 years; body weight 116±28 kg; fat 43±6%). All had participated in one to four 11-12 week lifestyle interventions (residential weight loss programme, mixed activities). Weight loss was promoted through a hypocaloric diet ('500 to '700 kcal/day) and daily physical activity (1-3 hours/day). Primary outcomes were weight loss and change in body composition (bioimpedance measurements) after the intervention periods and at follow-up. Results: A total of 2120, 526, 139 and 47 people participated in one to four interventions with mean±SEM times from start to follow-up of 1.3±0.1, 2.9±0.2, 4.2±0.3 and 5.2±0.4 years respectively. Overall 50, 41, 18 and 11% of the participants were lost to follow-up after one to four interventions, respectively. The cumulated weight loss at follow-up increased with the number of interventions from one to four: 12.2±0.1, 15.9±0.7, 16.1±1.2 and 18.5±2.0 kg (p<0.001). The ratios between cumulated loss of fat and fat free mass after one to four interventions decreased with the number of interventions (2.4, 2.2, 2.1 and 1.4). Rates of weight loss during the interventions ranged from 0.70±0.06 to 1.06±0.01 kg/week and the maximum weight regain during the follow-up periods was 0.039±0.007 kg/week. Conclusions: Repeated relatively short lifestyle interventions in a selected and motivated group can be an efficient method for weight loss maintenance with only limited body weight cycling in the interim periods. However, the relationship between loss of fat and fat free mass might change in an unfavourable direction.

KW - Weight cycling

KW - Body composition

KW - Weight regain

KW - Fat mass

KW - Fat free mass

KW - Weight loss camp

U2 - 10.1177/1403494817693709

DO - 10.1177/1403494817693709

M3 - Journal article

C2 - 28443486

SN - 1403-4948

VL - 45

SP - 305

EP - 313

JO - Acta socio-medica Scandinavica

JF - Acta socio-medica Scandinavica

IS - 3

ER -