Background
Method
Participants
Preparation and placement of sEMG
MVC test
Cervical erector spinae
| The therapist stands behind the participant and resists neck extension. |
Trapezius
| The therapist stands behind the participant and unilateral action resists shoulder elevation and tilt of the head. |
Infraspinatus
| The physiotherapist is placed laterally to the participant and resists external rotation and separation of the arm, elbow flexion of 90°. |
Anterior deltoid
| The therapist is positioned before the participant and resists forward flexion and internal rotation of the arm. |
Middle deltoid
| The physiotherapist is placed laterally to the participant and resists separation of the arm to 90 degrees. |
Pectoralis
| The therapist is positioned before the participant and resists the approach and internal rotation. |
Latissimus dorsi
| The therapist stands behind the participant and resists the approach and arm extension, and internal rotation. |
Acquisition and processing of data
Statistical analysis
Results
LAND | MAX_ISO_TRAP | MAX_ISO_PECT | MAX_ISO_DELTA | MAX_ISO_DELTM | MAX_ISO_INFR | MAX_ISO_DORS | MAX_ISO_ESPIN |
---|---|---|---|---|---|---|---|
Average(μV)
| 728.37 | 693.37 | 1116.00 | 1812.12 | 671.43 | 633.06 | 156.87 |
SD
| ±570.17 | ±433.43 | ±705.02 | ±1079.56 | ±450.13 | ±479.32 | ±128.50 |
95% Confidence Intervals
| 424.54 | 462.41 | 740.31 | 1236.86 | 431.57 | 377.64 | 88.39 |
1032.20 | 924.33 | 1491.68 | 2387.38 | 911.29 | 888.47 | 225.35 | |
WATER
|
MAX_ISO_TRAP
|
MAX_ISO_PECT
|
MAX_ISO_DELTA
|
MAX_ISO_DELTM
|
MAX_ISO_INFR
|
MAX_ISO_DORS
|
MAX_ISO_ESPIN
|
Average(μV)
| 661.75 | 1219.12 | 1000.12 | 1674.37 | 954.81 | 72.00 | 247.06 |
SD
| ±636.55 | ±1011.54 | ±821.70 | ±2656.80 | ±675.07 | ±117.34 | ±348.19 |
95% Confidence Intervals
| 322.55 | 680.10 | 562.26 | 258.66 | 595.08 | 9.47 | 61.52 |
1000.94 | 1758.14 | 1437.98 | 3090.08 | 1314.53 | 134.52 | 432.60 | |
Difference% land/water
| 9% | −40% | 10% | 7% | −30% | 90% | −35% |
ICC
| .278 | −.004 | −.009 | .024 | .151 | .100 | .082 |
Cronbach
| .435 | −.009 | −-017 | .047 | .263 | .182 | .152 |
Sig.
| .134 | .063 | .679 | .148 | .301 | .001* | .569 |