2015 年 51 巻 Supplement 号 p. S450-S453
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.
