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Table 1 Presents the demographic information and physical activity data of the study participants

From: Impact of treadmill running on distal femoral cartilage thickness: a cross-sectional study of professional athletes and healthy controls

Variables

Total Athletes (n = 72)

Athletes Subgroup 1 (n = 36)

Athletes Subgroup 2 (n = 36)

Control Group (n = 72)

P-value

Age (years), mean ± SD

29.6 ± 6.6

28.4 ± 7.1

30.7 ± 6.0

31.9 ± 6.7

NS

Sex, male/female, n (%)

52 (72%)/20 (28%)

26 (72%)/10 (28%)

26 (72%)/10 (28%)

52 (72%)/20 (28%)

NS

Weight (kg), mean ± SD

79.6 ± 12.9

77.8 ± 11.7

81.5 ± 14.0

77.5 ± 10.0

NS

Height (cm), mean ± SD

170.1 ± 30.2

168.9 ± 30.1

171.3 ± 30.7

171.7 ± 27.9

NS

BMI (kg/m2), mean ± SD

25.9 ± 3.1

25.6 ± 3.2

26.1 ± 3.0

25.6 ± 2.6

NS

Smokers, n (%)

11 (15.2)

6 (16.6)

5 (13.8)

14 (19.4)

NS

Speed (mph), mean ± SD

8.7 ± 2.8

8.2 ± 2.3

9.3 ± 3.1

-

NS

Incline (degree), mean ± SD

2.6 ± 3.4

2.2 ± 2.8

3.1 ± 3.9

-

NS

Mean running duration per session (minutes), mean ± SD

31.4 ± 5.1

32.6 ± 5.3

30.1 ± 4.3

-

NS

Mean running duration per week (minutes), mean ± SD

108.7 ± 48.6

109.3 ± 49.8

108.4 ± 48.0

-

NS

Total duration of running (months), mean ± SD

17.2 ± 15.9

5.1 ± 1.8

29.3 ± 14.5

-

0.001

  1. SD: standard deviation, BMI: body mass index, NS: not significant, kg: kilogram, cm: centimeter, mph: mile per hour. Subgroup 1: athletes with less than 12 months running, subgroup 2: athletes with equal or more than 12 months running