title: Aerobic response to endurance exercise training in children.
abstract: OBJECTIVE
  To investigate the ability of children to improve aerobic fitness, as indicated by changes in maximaal oxygen uptake (VO2max), after a 12-week period of endurance training.
  
  
  METHODS
  Longitudinal prospective training with control period.
  
  
  METHODS
  Middle school physical education class.
  
  
  METHODS
  Twenty-four girls and 13 boys, ages 10.9 to 12.8 years.
  
  
  METHODS
  Three 30-minute sessions of aerobic activity weekly for 12 weeks at an intensity-producing a mean heart rate of 166 beats per minute. Maximal treadmill testing was performed 12 weeks before the training program and again at the start and end because each child served as his/her own control.
  
  
  RESULTS
  Mean VO2max did not change significantly during the control period but rose from 44.7 (5.8) to 47.6 (6.4) mL kg-1min-1 (6.5%) with training (P < .05). No differences in training response were observed relative to sex, pretraining VO2max, or sports participation.
  
  
  CONCLUSIONS
  These findings support the concept that VO2max can be improved with endurance training during the childhood years, but the degree of aerobic train-ability is limited in healthy, active children.
authors.affiliation: Department of Pediatrics, Baystate Medical Center, Springfield, MA 01199, USA.
authors.forename: T W
authors.initials: TW
authors.lastname: Rowland
authors.forename: A
authors.initials: A
authors.lastname: Boyajian
mesh_terms: D002648:Child; D015444:Exercise / Q000502:physiology*; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010806:Physical Education and Training; D010809:Physical Fitness / Q000502:physiology*; D011446:Prospective Studies; D012119:Respiration