Key result
A two-hour long-term driving test increased muscle frequency and stiffness on the right side of the low back, and increased decrement, creep, and relaxation on the left side.
Why the study?
Does long-term driving change low back muscle characteristics measured by MyotonPRO?
Does long-term driving change low back muscle characteristics measured by MyotonPRO?
Long-term driving evokes measurable changes in low back muscle characteristics (stiffness, frequency, creep) that can be assessed using MyotonPRO.
Single-subject EMG pilot in driving may refine fatigue protocols; leaves open pain correlation pending larger studies.
Background: Sedentary behavior is characterized by physical inactivity and is associated with several health risks. Previous studies try to measurement of low back muscle fatigue using EMG (electromyograhy) in a long-term driving. However results show there are no significant correlation between muscle fatigue and back pain. Method: One subject volunteered to participate in this pilot study. In this study, experiment was consisted of pre-test and long-term driving test. Pre-test was designed to compare EMG and MyotonPRO results by evoked muscle fatigue at biceps. Before the long-term driving test, we selected 32 points of subject's back and measurement muscle characteristic using MyotonPRO. After driving test, we measured muscle characteristic using MyotonPRO. Results: Long-term driving test result shows that Frequency and Stiffness increased at right side of low back. Decrement, Creep and Relaxation was increased at left side of low back. Conclusion: These result shows that long-term driving evoked muscle's blood supply at right side of low-back and evoked a pain or overload. Application: Low back muscle characteristic change evoked by long-term driving would be measured using by MyotonPRO.
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Kim et al. (2015) studied Low back muscle fatigue (n=1). Long-term driving vs. Pre-driving baseline was evaluated on Change in low back muscle characteristics (frequency, stiffness, decrement, creep, relaxation). A two-hour long-term driving test increased muscle frequency and stiffness on the right side of the low back, and increased decrement, creep, and relaxation on the left side.
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