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Table 2 Association of concurrent changes in self-reported leisure-time physical activity and sedentary behaviour in accumulated increments of 30 min with body composition: analyses in completers-only

From: Targeting body composition in an older population: do changes in movement behaviours matter? Longitudinal analyses in the PREDIMED-Plus trial

  Percentage of body fat VAT (g) Percentage of muscle mass Muscle-to-fat mass ratio
β (95% CI) p value β (95% CI) p value β (95% CI) p value β (95% CI) p value
Physical activity
Total PA
  Minimally adjusted − 0.08 (− 0.11; − 0.05) < 0.001 − 15.1 (− 22.7; − 7.49) < 0.001 0.08 (0.05; 0.11) < 0.001 0.46 (0.20; 0.71) 0.001
  Multivariable-adjusted − 0.07 (− 0.10; − 0.04) < 0.001 − 13.9 (− 21.5; − 6.23) < 0.001 0.07 (0.04; 0.10) < 0.001 0.41 (0.15; 0.67) 0.002
LPA
  Minimally-adjusted − 0.02 (− 0.07; 0.02) 0.298 − 1.69 (− 13.2; 9.87) 0.775 0.02 (− 0.02; 0.07) 0.311 0.10 (− 0.29; 0.49) 0.629
  Multivariable-adjusted − 0.03 (− 0.07; 0.02) 0.264 − 2.23 (− 13.8;9.36) 0.706 0.02 (− 0.02; 0.07) 0.283 0.11 (− 0.28; 0.50) 0.585
MVPA
  Minimally-adjusted − 0.09 (− 0.12; − 0.06) < 0.001 − 17.4 (− 25.8; − 9.05) < 0.001 0.08 (0.05; 0.12) < 0.001 0.50 (0.22; 0.78) 0.001
  Multivariable-adjusted − 0.08 (− 0.11; − 0.04) < 0.001 − 15.6 (− 24.1; − 7.25) < 0.001 0.07 (0.04; 0.10) < 0.001 0.44 (0.15; 0.72) 0.003
Sedentary behaviour
Total SB
  Minimally-adjusted 0.04 (0.02; 0.06) < 0.001 5.46 (0.78; 10.1) 0.022 − 0.04 (− 0.06; − 0.02) < 0.001 − 0.17 (− 0.32; − 0.01) 0.040
  Multivariable-adjusted 0.03 (0.01; 0.05) < 0.001 4.37 (− 0.35; 9.08) 0.070 − 0.03 (− 0.05; − 0.01) < 0.001 − 0.14 (− 0.30; 0.02) 0.097
TV-viewing SB
  Minimally-adjusted 0.03 (0.01; 0.05) 0.007 0.56 (− 5.17; 6.29) 0.848 − 0.03 (− 0.05; − 0.01) 0.007 − 0.10 (− 0.29; 0.09) 0.305
  Multivariable-adjusted 0.03 (0.01; 0.05) 0.014 − 0.01 (− 5.74; 5.72) 0.996 − 0.03 (− 0.05; − 0.01) 0.012 − 0.08 (− 0.28; 0.11) 0.390
  1. The values shows the β coefficients (95% CIs). These represent the change in outcome variables (percentage of body fat, VAT (g), percentage of muscle mass and muscle-to-fat mass ratio), when increasing 30 min/day of each exposure variable (total PA, LPA, MVPA, total SB and TV-viewing SB). Mixed-effects linear models with random intercepts at recruiting centre, family and patient level were used. Analyses included only completers. Minimally-adjusted model: age, sex, intervention arm and time. The multivariable-adjusted model was further adjusted for baseline variables, such as educational level, smoking, diabetes, height, as well as repeatedly measured total energy intake, total PA (for SB exposures), and total SB (for PA exposures). The n of each outcome at baseline was for the percentage of body fat n = 1564, for VAT n = 1529, for the percentage of muscle mass n = 1564 and for muscle-to-fat mass ratio n = 1564; at 6 months was for the percentage of body fat n = 1048, for VAT n = 1035, for the percentage of muscle mass n = 1048 and for muscle-to-fat mass ratio n = 1048; at 12 months was for the percentage of body fat n = 1234, for VAT n = 1223, for the percentage of muscle mass n = 1234 and for muscle-to-fat mass ratio n = 1234
  2. VAT visceral adipose tissue, PA physical activity, LPA light physical activity, MVPA moderate-to-vigorous physical activity, SB sedentary behaviour