title: Effects of short-term endurance training on aortic distensibility in young males.
abstract: BACKGROUND
  Short-term endurance exercise training can increase aortic distensibility. The effect of exercise on arterial distensibility, however, may not last long term.
  
  
  OBJECTIVE
  We evaluated the effects of short-term exercise training and detraining on aortic distensibility in 10 sedentary young males (21.0 +/- 0.6 yr, mean +/- SE; range 19-24 yr).
  
  
  METHODS
  The subjects underwent 8 wk of endurance training on a cycle ergometer at 70% of maximal oxygen consumption (VO(2max)), for 60 min at a time and on alternate days (3-4 d.wk(-1). The detraining period consisted of a return to sedentary days for 8 wk. The aortic pulse wave velocity (APWV) was measured before and immediately after training and during the detraining period.
  
  
  RESULTS
  The VO(2max) was significantly increased after training (pre: 2240.0 +/- 71.4 mL, after: 2728.8 +/- 82.5 mL, mean +/- SE, P < 0.0001) and remained at increased levels during the detraining period (after 4 wk: 2671.2 +/- 73.6 mL, P < 0.001; after 8 wk: 2628.0 +/- 85.0 mL, P < 0.001). The APWV was significantly decreased after training (pre: 5.80 +/- 0.15 m.s(-1), after: 5.50 +/- 0.21 m.s(-1), P < 0.01) but returned close to the baseline after detraining for 4 wk (5.66 +/- 0.13 m.s, P < 0.18).
  
  
  CONCLUSIONS
  Our data suggest that short-term exercise training can improve aortic distensibility, but the effect cannot be maintained without continuing physical exercise.
authors.affiliation: Faculty of Wellness Studies, Kwassui Women's College, 1-50, Higashiyamate-machi, Nagasaki 850-8515, Japan. kakiyama@kwassui.ac.jp
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Kakiyama
authors.forename: Jun
authors.initials: J
authors.lastname: Sugawara
authors.forename: Haruka
authors.initials: H
authors.lastname: Murakami
authors.forename: Seiji
authors.initials: S
authors.lastname: Maeda
authors.forename: Shinya
authors.initials: S
authors.lastname: Kuno
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Matsuda
mesh_terms: D000328:Adult; D001011:Aorta / Q000502:physiology*; D001783:Blood Flow Velocity / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology; D010101:Oxygen Consumption; D010806:Physical Education and Training; D010807:Physical Endurance / Q000502:physiology*; D013997:Time Factors; D014664:Vasodilation