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Table 3 Body Composition and Resting Metabolic Rate (M ± SD) for Diet Phase and Post-Diet Phase

From: Flexible vs. rigid dieting in resistance-trained individuals seeking to optimize their physiques: A randomized controlled trial

  FLEXIBLE (n=11) RIGID (n=12)  
Diet Phase Pre Mid Post
(95% CI)
ES Pre Mid Post
(95% CI)
ES  
Body Weight (kg) 76.1 ± 8.4 74.2 ± 8.4 73.5 ± 8.8* -2.6
(-3.6; -1.5)
0.30 74.9 ± 12.2 73.0 ± 11.5 71.9 ± 11.7* -3.0 (-5.2; -0.8) 0.25  
FFM (kg) 61.3 ± 11.3 61.1 ± 10.5 61.0 ± 10.4 -0.3
(-1.7; 1.0)
0.03 56.8 ± 10.7 57.1 ± 11.0 57.0 ± 10.8 +0.2
(-1.1; 1.5)
0.02  
Fat Mass (kg) 14.8 ± 5.7 13.1 ± 5.6 12.5 ± 5* -2.3
(-3.3; -1.2)
0.43 18.1 ± 6.2 15.9 ± 6.5 14.9 ± 6.5* -3.2
(-4.7; -1.6)
0.50  
Body Fat (%) 19.4 ± 8.5 17.9 ± 7.9 17.0 ± 7.1* -2.4
(-4.1; -1.1)
0.31 24.0 ± 6.2 21.8 ± 7.3 20.7 ± 7.1* -3.3
(-4.5; -2.0)
0.50  
RMR (kcals/day) 1816 ± 229 1805 ± 169 1827 ± 257 +11
(-112; 134)
0.05 1576 ± 350 1631 ± 377 1649 ± 375 +73
(-83; 231)
0.2  
Post-Diet Phase Pre Mid Post
(95% CI)
ES Pre Mid Post
(95% CI)
ES p
Body Weight (kg) 73.5 ± 8.8 74.1 ± 9.7 75.2 ± 9.8* +1.7
(0.2; 3.2)
0.18 71.9 ± 11.7 72.4 ± 10.8 72.3 ± 11.6 +0.4
(-0.9; 1.9)
0.03 0.461
FFM (kg) 61.0 ± 10.4 61.6 ± 10.8 62.7 ± 11.3* +1.7
(0.8; 2.7)
0.16 57.0 ± 10.8 56.8 ± 10.3 56.3 ± 10.5 -0.7
(-1.6; 0.2)
0.07 0.037
Fat Mass (kg) 12.5 ± 5.0 12.5 ± 4.4 12.5 ± 4.4 0
(-1.1; 1.1)
0 14.9 ± 6.5 15.6 ± 6.4 16.0 ± 6.4* +1.1
(0.1; 2.1)
0.17 0.562
Body Fat (%) 17.0 ± 7.1 17.2 ± 6.4 17.0 ± 6.6 0
(-1.5; 1.0)
0 20.7 ± 7.1 21.6 ± 7.2 22.1 ± 6.8* +1.3
(0.03; 2.7)
0.19 0.338
RMR (kcals/day) 1848 ± 261 1850 ± 279 1983 ± 396 +135
(-8; 278)
0.39 1649 ± 375 1749 ± 407 1755 ± 387 +106
(-11; 222)
0.28 0.488
  1. FFM Fat-free mass, ▲ Post – Pre, CI confidence interval, ES Cohen’s d effect size, RMR, resting metabolic rate
  2. p = 2x5 group x time interaction (post-hoc analysis revealed differences between the diet groups were during the post-diet phase only)
  3. *Significantly different from pre-measures (p < 0.05)