title: Relationships between muscle activity and autonomic regulation during cycling with a torque-assisted bicycle.
abstract: For customizing the assistance scheme of a torque-assisted bicycle, we estimated physical activity during cycling with ECG and surface EMG for the circuit including a steep uphill section near the middle and compared it with the vehicle data. Using the respiratory-sinus-arrhythmia-related power ratio in the fluctuation of the R-R interval, prRSA and a muscular fatigue index, we classified physical activity into four groups for each trial. Results showed that the assist enlarged prRSA but did not sufficiently support muscular fatigue.
authors.affiliation: Graduate Sch. of Sci. & Technol., Niigata Univ., Japan. kiryu@bc.niigata-u.ac.jp
authors.forename: Tohru
authors.initials: T
authors.lastname: Kiryu
authors.forename: Jun
authors.initials: J
authors.lastname: Yamagata
mesh_terms: D001341:Autonomic Nervous System / Q000502:physiology*; D001642:Bicycling / Q000502:physiology; D005080:Exercise Test / Q000295:instrumentation* / Q000379:methods; D005081:Exercise Therapy / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D007866:Leg / Q000502:physiology*; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology; D019415:Torque