Table 4 The pooled WMD of outcomes considering vibration frequency and vibration type as subgroups

ML postural control (CE)

3^{26, 30, 35}

Total

–1.48, –0.27

61.8

0.073

2^{26, 30}

 < 50 Hz

–1.94, –0.49

18.4

0.268

NA 30

50–100 Hz

–0.69, –0.35

–

–

AP postural control (CE)

4^{26, 25, 35, 30}

–2.78, 1.62

90.3

 < 0.001

3^{26, 25, 30}

 < 50 Hz

–2.53, –0.72

27.4

0.254

NA 30

50–100 Hz

1.37, 4.27

–

–

3^{26, 25, 30}

WBV

–3.61, 2.62

93.5

0.088

NA 35

LMV

–2.25, 0.57

–

–

ML postural control (OE)

3^{26, 25, 24}

Total

–1.26, 1.77

95.8

 < 0.001

2^{26, 25}

 < 50 Hz

–0.78, –0.10

0.0

0.459

NA 24

 > 100 Hz

1.26, 2.34

–

–

2^{26, 25}

WBV

–0.78, –0.10

0.0

0.459

NA 24

LMV

1.26, 2.34

–

–

AP postural control (OE)

3^{26, 25, 35}

Total

–0.98, 0.01

1.0

0.364

2^{26, 25}

WBV

–1.27, 0.21

50.5

0.155

NA 30

LMV

–2.24, 1.32

–

–

Hamstring PT

3^{26, 35, 31}

Total

4.51, 20.83

64.8

0.058

2^{26, 35}

 < 50 Hz

7.14, 14.97

0.0

0.698

NA 31

 > 100 Hz

11.75, 29.93

–

–

NA 26

WBV

7.19, 12.07

–

–

2^{31, 35}

LMV

1.44, 29.47

56.6

0.129

Quadriceps PT

9^{23, 24, 26, 28, 31, 32, 33, 34, 35}

Total

–0.06, 0.29

81.6

 < 0.001

5^{26, 28, 31, 32, 35}

 < 50 Hz

–0.45, –0.17

0.0

0.648

2^{26, 34}

50–100 Hz

0.14, 0.26

0.0

0.582

2^{24, 32}

 > 100 Hz

0.17, 0.44

0.0

0.889

5^{26, 28, 31, 32, 35}

WBV

–0.14, 0.32

58.9

0.032

5^{31, 32, 33, 34, 35}

LMV

–0.18, 0.49

89.4

 < 0.001