ヒト骨格筋に対するストレッチングが筋硬度に及ぼす影響 超

ultrasound elastography
P1
P2
P4
P7
P9
P11
P11
ultrasound elastography
1,
2,
SS
2,
1
ROM
ultrasound elastography: UE
SS
UE Real-time Tissue Elastography
SS
20
SS
30
ROM
22.6kPa
SS
15
SS
UE
SR
20%
13-16%
SR
30
SS
ROM
5
strain ratio(SR)
(muscle / coupler ratio)
ROM
19-25
SR
ROM
1.School of Exercise and Health Sciences, Edith Cowan University (Australia)
2.
1
1
2
3
muscle hardness
“
”
stiffness
muscle hardness
4,5
stiffness
6
−
5
7
8
Wang
Ultrasound Elastography
9
UE
B
UE
UE
UE Real-time Tissue Elastography (RTE)
10
B
2
Range Of Interest: ROI
2
UE
2
ROI
RTE
strain ratio (SR)
7,11,12
UE
13
(SS)
shear wave
3
2
SS
15%
Akagi
SS
Nordez
Akagi
14
8-12%
15
transient
2.5
SS
SS
3
SS
SS
SS
muscle tendon unit: MTU
5
16,17
SS
stiffness
stiffness
MTU stiffness
SS
SS
RTE
RTE
SS
20
±
20.3±1.8
SS
176.9±6.0cm
72.6±4.3kg
1.
48
RTE
SS
2
SS
30
15
0°
30
15
30
1
ROM
30
EMG
2
4
2.
SS
18
Biodex system 3, NY, USA
90%
30°
1°/s
5
18
19
5Nm
constant torque design
17
3. ROM
ROM
RTE
SR strain ratio
SS
Morse
°
16
1°/s
ROM
5
1.5kHz
(TEAC
SR
LX-10
30%
)
20
Hi-vision Ascendus
EZU-TECPL1
EUP-L65, 6-14MHz
22.6kPa
SR
muscle / coupler
strain graph
compression-relaxation cycle” -0.7
ROI
0.7
21
4mm
22
18mm
”the rhythmical
SR
30mm
30mm
EVA form
70mm
130mm
30mm
35mm
70mm
30mm
4.
ROM
SR
bipolar 13mm
S&ME; Biolog
5
2000Hz
EMG
1.5kHz
EMG
(Root Mean Squeare: RMS)
5.
SR
ROM
SS
30
SR
30
15
ROM
6
SS
SR
SS
pre
ROM
Bonferroni
SPSS 12.0 J for windows
5%
1. EMG
7.6
3.2
V
5.8
2.6
V
8.7
2.9
2.8
V
9.1
V
2. ROM
3
SS
28% 15
ROM
17% 30
13%
3 SS
pre
SS
P<0.01
ROM
7
3. SR (strain ratio)
4
RTE
SR
SR
5
SS
P<0.01
11
16%
15
4 RTE
5 SS
15
SS
SR
SR
8
SR
SS
ROM
ROM
SS
SR
Akagi
SR
ROM
23
ROM
ROM
stretch tolerance
SS
ROM
23
MTU
stretch
tolerance
SS
24
5
ROM
SS
25
SS
Akagi
13,14
SR
Akagi
13,14
11
16%
13,14
SS
90
26
45
ROM
16,17,28
Murayama
SS
SS
3
stretch tolerance
MTU stiffness
27
ROM
SS
MTU stiffness
16,17
MTU stiffness
stiffness
5,6
ROM
stiffness
muscle hardness
29
Purslow30
SR
ROM
SR
47%
2%
31
ROM
41%
10%
ROM
9
5
SS
15
SR
SS
15
SS
SS
peak torque
Trajano
15
SS
18
SR
SS
muscle strength – length relationship
MTU
force deficit”
SS
MTU stiffness
32-34
stiffness
10
”stretching-induced
5
SS
MTU stiffness
MTU stiffness
20
MTU stiffness
30%
16
SS
35
SS
19SS
90%
SR
SS
stiffness
MTU
stiffness
limitation
0
0
0
30
36
UE
13,14
shear wave
UE
37
10
UE
22
SS
UE
SS
SS
38
11
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