Table 3 The differences in the body frame index at two and three months later between the exercising and non-exercising groups by a paired t-test (two-sided test)

 Weight (kg)

50.1

7.05

50.2

7.11

0.11

0.91

50.1

7.12

0.15

0.89

 Body Fat Percentage (%)

27.3

4.70

27.4

4.75

0.25

0.80

27.9

4.86

2.06

0.53

 BMI (kg/m²)

20.2

2.44

20.3

2.40

0.11

0.91

20.2

2.47

0.16

0.88

 Muscle mass (kg)

33.9

2.95

34.2

2.96

2.59

0.017

34.2

2.95

2.36

0.028

 Calcaneus QUS-SI

105.5

15.2

108.9

17.5

1.36

0.19

110.8

18.2

2.07

0.05

 Calcaneus QUS-SOS (m/s)

206.0

60.6

214.1

61.5

0.93

0.37

231.1

45.0

2.56

0.018

 Calcaneus QUS-BUA (dB/MHz)

32.0

0.8

33.4

3.0

2.28

0.033

32.4

0.7

2.25

0.036

 Weight (kg)

52.5

6.89

52.9

6.84

1.66

0.11

52.4

6.98

0.35

0.73

 Body Fat Percentage (%)

28.1

4.65

29.0

4.30

2.52

0.021

29.1

4.61

3.36

0.003

 BMI*¹ (kg/m²)

21.0

2.46

21.2

2.37

2.66

0.016

21.0

2.47

0.32

0.75

 Muscle mass (kg)

35.4

3.13

35.3

3.04

0.70

0.49

34.9

2.94

3.38

0.003

 Calcaneus QUS-SI

103.8

17.6

108.0

18.6

3.66

0.002

108.3

16.2

3.54

0.002

 Calcaneus QUS-SOS (m/s)

209.5

57.8

217.5

44.8

1.09

0.292

225.1

46.0

1.99

0.062

 Calcaneus QUS-BUA (dB/MHz)

32.2

0.50

33.0

2.04

1.76

0.096

32.4

0.68

1.48

0.157