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Table 2 Calorie intake, physical activity, and resting energy expenditure throughout the study

From: Dietary n-3-polyunsaturated fatty acids and energy balance in overweight or moderately obese men and women: a randomized controlled trial

  Lead-in period (2 weeks) Isoenergetic period (2 weeks) Ad libitum period (12 weeks) Friedman tests
Physical activity (MET-h/d)*:
Control group (n = 13) 38.2 (19.9) 38.6 (22.7) 37.4 (21.7) χ2(5) = 6.156, p = 0.291
n-3-PUFA3 group (n = 13) 54.8 (29.9) 62.0 (29.9) 57.5 (29.6) χ2(5) = 7.313, p = 0.198
     RM-ANOVA†
     Time Time × Group
Calorie intake (MJ/d):
Control group (n = 13) 10.9 (1.5) 10.9 (1.3) 10.2 (1.9) F(1.1,26.4) = 2.994, F(1.1,26.4) = 0.703,
n-3-PUFA group (n = 13)‡ 11.0 (2.2) 11.1 (2.0) 10.7 (2.5) p = 0.092 p = 0.555
  CRC 1 § CRC 2 CRC 3   
Resting energy expenditure (MJ/d):
Control group (n = 12) 6.74 (0.89) 6.41 (1.10) 6.41 (0.79) F(2,46) = 0.313, F(2,46) = 0.703,
n-3-PUFA group (n = 13) 6.53 (1.23) 6.59 (1.51) 6.57 (1.39) p = 0.733 p = 0.500
Resting energy expenditure (kJ/d/kg fat free body mass ||):
Control group (n = 12) 134 (15) - 132 (13) F(1,23) = 0.002, F(1,23) = 0.315,
n-3-PUFA group (n = 13) 133 (21) - 135 (14) p = 0.961 p = 0.580
Respiratory quotient:
Control group (n = 12) 0.86 (0.05) 0.87 (0.05) 0.86 (0.05) F(2,46) = 0.096, F(2,46) = 1.091,
n-3-PUFA group (n = 13) 0.85 (0.03) 0.84 (0.05) 0.85 (0.05) p = 0.908 p = 0.344
  1. All data are means (SD). * MET-h, metabolic equivalent task-hours. † RM-ANOVA, repeated-measures analysis of variance. ‡ PUFA, polyunsaturated fatty acids. §CRC, Clinical Research Center. || Fat-free body mass data from dual-energy x-ray absorptiometry-scans were available only for CRC visits 1 and 3.