title: Evaluation of exercise prescription for hypertensive obese men by ventilatory threshold.
abstract: BACKGROUND
  Prescription of aerobic exercise for obese subjects with mild hypertension in clinical practice remains to be investigated.
  
  
  METHODS
  Forty-one Japanese obese males with hypertension were enrolled and compared with 41 age-and sex-matched obese subjects without hypertension and control subjects. In addition, 25 obese subjects with or without hypertension participated in a one-year follow up study. They were instructed to keep their low exercise intensity and record their daily walking. Before and after exercise prescription, body composition, blood pressure and aerobic exercise level were evaluated. Ventilatory threshold (VT) was determined breath by breath during exercise test using a ramp protocol and rates of oxygen consumption (VO2), work rate (WR), heart rate (HR), deltaHR, %HR max, %HR reserve and rate of perceived exertion (RPE) were measured at VT.
  
  
  RESULTS
  At VT, obese subjects with hypertension had significantly lower VO2 (13.5 +/- 2.1 mL/kg/min) and WR (75.1 +/- 16.5W) than control subjects (VO2, 18.1 +/- 5.7; WR, 92.0 +/- 32.4). %HR reserve was also significantly lower compared with control subjects, while %HR max, was not different. RPE was also similar among the 3 groups. By prescribed low-grade exercise during one-year follow-up study, not only body composition but also blood pressure at rest was improved in obese subjects with and without hypertension.
  
  
  CONCLUSIONS
  Our results indicated reduced exercise capacity in Japanese obese males. Exercise intensity of 60%HR max, 30%HR reserve and RPE 12 is recommended in obese subjects with hypertension as well as obese subjects without hypertension.
authors.affiliation: Okayama Southern Institute of Health, Japan. center@okakenko.jp
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Miyatake
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Nishikawa
authors.forename: Akie
authors.initials: A
authors.lastname: Morishita
authors.forename: Mie
authors.initials: M
authors.lastname: Kunitomi
authors.forename: Jun
authors.initials: J
authors.lastname: Wada
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Makino
authors.forename: Kayo
authors.initials: K
authors.lastname: Takahashi
authors.forename: Shohei
authors.initials: S
authors.lastname: Kira
authors.forename: Masafumi
authors.initials: M
authors.lastname: Fujii
mesh_terms: D000328:Adult; D015444:Exercise; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000628:therapy*; D008297:Male; D009765:Obesity / Q000150:complications / Q000628:therapy*; D055656:Prescriptions; D012129:Respiratory Function Tests