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Table 1 Mean values for age, BMI, and body fat % of recreational athletes submitted to short-term aerobic training programs

From: A Randomized Controlled Trial Investigating the Effects of Undulatory, Staggered, and Linear Load Manipulations in Aerobic Training on Oxygen Supply, Muscle Injury, and Metabolism in Male Recreational Runners

Variables. Groups p value
Control (n = 16) Und-Und (n = 18) Und-Lin (n = 19) Sta-Und (n = 17) Sta-Lin (n = 18)
Pre-training
 Age 29.0 ± 0.7 27.7 ± 9.3 26.3 ± 6.5 26.6 ± 7.2 24.3 ± 4.0 0.86
  Range (years) 28–30 20–35 21–35 20–35 22–32  
  CV (%) 2.41 35.02 24.71 27.07 16.46  
 BMI 26.0 ± 0.4 25.8 ± 4.6 25.8 ± 5.2 25.1 ± 3.0 25.9 ± 4.6 0.99
  Range (kg/m2) 21.33–30.47 20.76–29.92 20.87–28.38 21.21–27.86 19.45–29.04  
  CV (%) 1.54 17.83 20.15 11.95 17.76  
 Body fat 15.3 ± 1.9 14.5 ± 5.8 11.1 ± 5.9 10.4 ± 4.3 13.1 ± 3.8 0.58
  Range (%) 11.86–22.15 12.37–24.77 9.18–24.83 10,15–23.34 12.88–24.31  
  CV (%) 12.42 40 53.15 41.35 29.01  
Post-training (8 weeks)
 BMI 26.2 ± 0.7 24.9 ± 4.4 * 25.7 ± 5.3* 24.8 ± 3.0 25.8 ± 4.4 * 0.98
  Range (kg/m2) 20.81–28,53 19.65–27.90 20.30–26.36 20.59–28.95 20.19–27.18  
  CV (%) 2.67 17.67 20.62 12.10 17.05  
  Δ (%) 0.66 − 8.70 − 0.32 − 0.87 − 0.12  
  d 0.35 0.05 0.02 0.10 0.02  
 body fat 16.5 ± 2.9 13.2 ± 6.3* 9.2 ± 5.0 8.6 ± 2.9 10.9 ± 6.3* 0.16
 Range (%) 14.8–20.6 9.45–17.30 8.31–15.73 8.14–12.32 8.89–16.12  
  CV (%) 17.57 47.73 54.35 33.72 59.80  
  Δ (%) 7.85 − 8.78 − 17.58 − 17.08 − 16.45  
  d 0.47 0.21 0.36 0.49 0.33  
p 0.17 0.04 0.06 0.09 0.03  
  1. BMI body mass index, Δ variation, d effect size. Values are indicated as mean ± standard deviation; * significant difference (p ≤ 0.05)