title: Postexercise Hypotension After Continuous, Aerobic Interval, and Sprint Interval Exercise.
abstract: We examined the effects of 3 exercise bouts, differing markedly in intensity, on postexercise hypotension (PEH). Eleven young adults (age: 24.6 ± 3.7 years) completed 4 randomly assigned experimental conditions: (a) control, (b) 30-minute steady-state exercise (SSE) at 75-80% maximum heart rate (HRmax), (4) aerobic interval exercise (AIE): four 4-minute bouts at 90-95% HRmax, separated by 3 minutes of active recovery, and (d) sprint interval exercise (SIE): six 30-second Wingate sprints, separated by 4 minutes of active recovery. Exercise was performed on a cycle ergometer. Blood pressure (BP) was measured before exercise and every 15-minute postexercise for 3 hours. Linear mixed models were used to compare BP between trials. During the 3-hour postexercise, systolic BP (SBP) was lower (p < 0.001) after AIE (118 ± 10 mm Hg), SSE (121 ± 10 mm Hg), and SIE (121 ± 11 mm Hg) compared with control (124 ± 8 mm Hg). Diastolic BP (DBP) was also lower (p < 0.001) after AIE (66 ± 7 mm Hg), SSE (69 ± 6 mm Hg), and SIE (68 ± 8 mm Hg) compared with control (71 ± 7 mm Hg). Only AIE resulted in sustained (>2 hours) PEH, with SBP (120 ± 9 mm Hg) and DBP (68 ± 7 mm Hg) during the third-hour postexercise being lower (p ≤ 0.05) than control (124 ± 8 and 70 ± 7 mm Hg). Although all exercise bouts produced similar reductions in BP at 1-hour postexercise, the duration of PEH was greatest after AIE.
authors.affiliation: 1Healthy Lifestyles Research Center, School of Nutrition and Health Promotion, Arizona State University, Phoenix, Arizona; and 2Department of Internal Medicine, Pulmonary and Critical Care Medicine Unit, Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital, University of Texas Southwestern Medical Center, Dallas, Texas.
authors.forename: Siddhartha S
authors.initials: SS
authors.lastname: Angadi
authors.forename: Dharini M
authors.initials: DM
authors.lastname: Bhammar
authors.forename: Glenn A
authors.initials: GA
authors.lastname: Gaesser
mesh_terms: D000328:Adult; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D064797:Physical Conditioning, Human / Q000379:methods*; D057774:Post-Exercise Hypotension / Q000503:physiopathology*; D011897:Random Allocation; D012420:Running / Q000502:physiology; D055815:Young Adult