title: Parasympathetic reactivation in children: influence of two various modes of exercise.
abstract: OBJECTIVE
  This study examined the effect of various modes of exercise on parasympathetic reactivation in children.
  
  
  METHODS
  Twelve healthy boys volunteered for this study. Time domain measurement of heart rate variability in 5 and 10 min and heart rate recovery (HRR) in 1 (HRR1) and 2 min (HRR2) were measured during recovery after incremental exercise tests by a 12-lead ECG. Incremental exercise tests were performed using either upper (arm cranking) or lower body (cycling) ergometers.
  
  
  RESULTS
  The amounts of increase in RMSSD and PNN50 in 5 and 10 min of recovery were higher in arm cranking compared to cycling. HRR1 and HRR2 were significantly higher after arm cranking compared to cycling.
  
  
  CONCLUSIONS
  These results suggest that parasympathetic reactivation is likely greater following exercises that use smaller muscle mass (arm cranking) rather than larger muscle mass (cycling) in healthy boys.
authors.affiliation: Department of Sport Physiology, College of Physical Education and Sport Sciences, University of Mazandaran, Pasdaran Street, 47415, P.O. Box: 416, Babolsar, Iran. m_ahmadian98@yahoo.com.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ahmadian
authors.affiliation: Department of Sport Physiology, College of Physical Education and Sport Sciences, University of Mazandaran, Pasdaran Street, 47415, P.O. Box: 416, Babolsar, Iran.
authors.forename: Valiollah Dabidi
authors.initials: VD
authors.lastname: Roshan
authors.affiliation: Department of Health Science and Technology, Faculty of Medicine, Center for Sensory-Motor Interaction (SMI), Aalborg University, Fredrik Bajers vej 7 D-3, 9220, Aalborg, Denmark.
authors.forename: Mahdi
authors.initials: M
authors.lastname: Hosseinzadeh
mesh_terms: D000293:Adolescent; D001132:Arm / Q000502:physiology*; D002648:Child; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test / Q000379:methods*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology; D010275:Parasympathetic Nervous System / Q000502:physiology*; D020127:Recovery of Function / Q000502:physiology
keywords: Arm cranking; Children; Cycling; Heart rate recovery; Parasympathetic reactivation; Resting heart rate variability