Table 3 Knee angles, absolute and integrated acceleration of the thigh muscles, and relative differences in EMG activation (means ± SD) during the first 30 s of the 3-min period in the downhill tuck position with vibration and different levels of compression

Knee angle [°]

0

123.9 ± 10.6^a,b

123.0 ± 13.3^a,b

121.2 ± 14.1^a,b

20

113.1 ± 8.3

113.0 ± 7.5

110.4 ± 9.2

40

111.6 ± 9.2

110.4 ± 11.1

109.5 ± 12.5

Acceleration [g]

0

0.89 ± 0.29

0.95 ± 0.44^b

0.98 ± 0.33^b

20

0.89 ± 0.37

0.85 ± 0.38

0.78 ± 0.41

40

0.84 ± 0.29

0.79 ± 0.24

0.73 ± 0.16

Integrated acceleration [g·s]

0

26.7 ± 8.6

28.3 ± 13.1^a

29.2 ± 15.8^a,b

20

26.7 ± 11.1

25.5 ± 11.3

23.1 ± 12.1

40

25.1 ± 8.6

23.7 ± 7.3

22.0 ± 4.8

EMG [% MVC] of the muscle

Tibialis anterior

0

75.9 ± 38.03

67.9 ± 40.2^a

89.3 ± 75.5^a,b

20

69.4 ± 27.2

83.3 ± 71.5

125.6 ± 133.5

40

82.1 ± 27.5

100.8 ± 92.3

112.0 ± 55.9

Gastrocnemius medialis

0

92.7 ± 18.1

83.2 ± 16.1

90.3 ± 15.1^b

20

95.9 ± 14.5

95.3 ± 24.3

95.0 ± 23.1

40

89.4 ± 19.4

96.2 ± 25.8

106.4 ± 29.3

Rectus femoris

0

106.7 ± 17.8

114.4 ± 22.9^b

136.5 ± 39.4^a,b

20

105.7 ± 23.9

120.6 ± 26.3

151.1 ± 43.6

40

107.5 ± 16.8

144.6 ± 64.0

178.8 ± 92.2

Vastus lateralis

0

99.8 ± 6.3

101.2 ± 9.62

118.7 ± 27.2

20

98.0 ± 4.2

103.7 ± 12.3

123.4 ± 23.4

40

100.0 ± 4.0

106.9 ± 15.8

125.2 ± 23.9

Vastus medialis

0

101.3 ± 17.6

89.7 ± 20.5

100.7 ± 26.3^a,b

20

93.3 ± 5.8

96.7 ± 12.8

112.5 ± 26.6

40

95.3 ± 7.3

99.2 ± 11.9

116.2 ± 20.6

Biceps femoris

0

90.2 ± 19.7

82.9 ± 16.2

97.2 ± 21.4

20

89.3 ± 11.2

89.2 ± 19.1

104.3 ± 28.1

40

93.0 ± 14.8

92.2 ± 21.8

106.4 ± 33.9

Gluteus maximus

0

101.5 ± 16.0^a,b

140.5 ± 80.2

165.8 ± 129.1^a,b

20

111.6 ± 12.5

133.3 ± 43.7

134.0 ± 63.3

40

114.0 ± 22.8

132.7 ± 52.5

134.0 ± 133.0