This study will test the within and between day variability of spinal kinematics and trunk muscle activity in healthy subjects and chronic low back pain patients during various daily-life activities.
This study will test the within and between day variability of spinal kinematics and trunk muscle activity in healthy subjects and chronic low back pain patients during various daily-life activities. Participants will come twice to the motion laboratory. During the first session, participants will first perform different functional activities (V1), such as sit-to-stand, gait, lifting tasks, stepping up. Their spinal kinematics will be measured with a camera-based system (VICON) using a multi-segment spinal model and trunk muscles activity will be recorded with surface electromyography. After a break, participants will have to perform all the functional activities a second time (V2). These two measures (V1 and V2) will be used to determine the within day variability of spinal kinematics. Finally, all participants will come one week later (V3) to repeat all the measurements to determine the between day variability.
Study Type
OBSERVATIONAL
Enrollment
40
University of Lausanne Hospitals
Lausanne, Canton of Vaud, Switzerland
Spinal kinematics
Range of movement at the lower lumbar, upper lumbar, lower thoracic and upper thoracic joints
Time frame: Change between measure 1 and measure 2 (30 minutes later)
Trunk muscle activity
Surface electromyography of paraspinal, rectus abdominis and external obliques muscles
Time frame: Change between measure 1 and measure 2 (30 minutes later)
Spinal kinematics
Range of movement at the lower lumbar, upper lumbar, lower thoracic and upper thoracic joints
Time frame: Change between measure 1 and measure 3 (day 7)
Trunk muscle activity
Surface electromyography of paraspinal, rectus abdominis and external obliques muscles
Time frame: Change between measure 1 and measure 3 (day 7)
Pain intensity
Pain intensity will be quantified by the 11-point Numeric Pain Rating Scale. The scale range from 0 (no pain at all) to 10 (worst pain).
Time frame: Measure 1 (Day 0), Measure 3 (Day 7)
Disability
Disability will be quantified by the Patient Specific Functional Scale. The scale assessed three relevant activities for the patient and scores each activity between 0 (impossible to realize the activity) to 10 (capable of doing the activity normally).
Time frame: Measure 1 (Day 0), Measure 3 (Day 7)
Disability (ODI)
Oswestry Disability Questionnaire. Score between 0 (no disability) and 100.
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Time frame: Measure 1 (Day 0), Measure 3 (Day 7).
Kinesiophobia
Tampa Scale of Kinesiophobia. The total score is between 17 (no kinesiophobia) to 68 (high level of kinesiophobia).
Time frame: Measure 1 (Day 0), Measure 3 (Day 7).
Catastrophizing
Pain Catastrophizing Scale. Score between 0 and 52 (high levels of catastrophizing).
Time frame: Measure 1 (Day 0), Measure 3 (Day 7).
Back Pain Attitudes Questionnaire
Back Pain Attitudes Questionnaire. Score between 34 (positive attitudes) and 170 (negative attitudes)
Time frame: Measure 1 (Day 0), Measure 3 (Day 7).
Fear
Fear scale measured before each movement or activity. Score between 0 (no fear) and 10 (high levels of fear).
Time frame: Measure 1 (Day 0), Measure 2 (Day 0), Measure 3 (Day 7).
Pain expectation
Pain expectation scale before each movement or activity. Score between 0 (no pain expected) and 10 (high levels of pain expected).
Time frame: Measure 1 (Day 0), Measure 2 (Day 0), Measure 3 (Day 7).