Table 1 Subject characteristics before and after the 6-week HIIT (n = 11).

From: Gene expression profile of muscle adaptation to high-intensity intermittent exercise training in young men

 

Before

After

P-value

Age (yr)

23.3 ± 2.8

—

 

Height (cm)

173.7 ± 7.2

—

 

Body weight (kg)

67.1 ± 7.1

67.7 ± 6.8

0.303

BMI

22.2 ± 1.6

22.4 ± 1.4

0.264

%fat (%)

15.0 ± 1.7

15.6 ± 2.5

0.189

Skeletal muscle mass (kg)

32.4 ± 3.3

32.3 ± 3.2

0.821

Quadriceps femoris CSA (mm2)

7059.8 ± 924.8

7358.4 ± 977.7

0.011

Hamstrings CSA (mm2)

3512.8 ± 588.2

3594.3 ± 599.3

0.047

Adductors CSA (mm2)

3539.0 ± 793.4

3616.6 ± 830.1

0.435

Total energy intake (kcal/day)

2329.7 ± 719.6

2264.3 ± 766.9

0.446

Protein intake (g/day)

77.7 ± 27.2

77.7 ± 41.1

0.995

Fat intake (g/day)

64.2 ± 30.1

64.7 ± 37.4

0.913

Carbohydrate intake (g/day)

340.6 ± 98.6

318.6 ± 77.4

0.088

  1. Values are presented as mean ± SD. CSA: cross-sectional area.
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