title: Ambulatory blood pressure reduction following high-intensity interval exercise performed in water or dryland condition.
abstract: We aimed to compare blood pressure (BP) responses following moderate-intensity continuous exercise (MICE), high-intensity interval exercise (HIIE) in dry land or HIIE in immersed condition, using 24-hour ambulatory BP monitoring. Forty-two individuals (65 ± 7 years, 52% men) with a baseline BP ≥ 130/85 mm Hg (systolic/diastolic blood pressures [SBP/DBP]) were randomly assigned to perform one of the three following exercises on a stationary cycle: MICE (24 minutes at 50% peak power output) or HIIE in dry land (two sets of 10 minutes with phases of 15 seconds 100% peak power output interspersed by 15 seconds of passive recovery) or HIIE in up-to-the-chest immersed condition. While MICE modified none of the 24-hour average hemodynamic variables, dryland HIIE induced a 24-hour BP decrease (SBP: -3.6 ± 5.7/DBP: -2.8 ± 3.0 mm Hg, P < .05) and, to a much greater extent, immersed HIIE (SBP: -6.8 ± 9.5/DBP: -3.0 ± 4.5 mm Hg, P < .05). The one condition that modified 24-hour pulse-wave velocity was immersed HIIE (-0.21 ± 0.30 m/s, P < .05).
authors.affiliation: Laboratory MOVE (EA 6314), Faculty of Sport Sciences, University of Poitiers, Poitiers, France; Cardiology Department, University Hospital of Poitiers, Poitiers, France; Sports Medicine Centre "Mon Stade", Paris, France; Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada. Electronic address: philippe.sosner@univ-poitiers.fr.
authors.forename: Philippe
authors.initials: P
authors.lastname: Sosner
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Gayda
authors.affiliation: Laboratory MOVE (EA 6314), Faculty of Sport Sciences, University of Poitiers, Poitiers, France; Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Olivier
authors.initials: O
authors.lastname: Dupuy
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Kinesiology, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Mauricio
authors.initials: M
authors.lastname: Garzon
authors.affiliation: Laboratory MOVE (EA 6314), Faculty of Sport Sciences, University of Poitiers, Poitiers, France.
authors.forename: Christopher
authors.initials: C
authors.lastname: Lemasson
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada; Rehabilitation Department, University Hospital of Dijon, Dijon, France; Inserm 1432, Multi-thematic Clinical Investigation Center (CIC-P), University Hospital of Dijon, Dijon, France; Inserm U1093, University of Bourgogne, Dijon, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Gremeaux
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada.
authors.forename: Julie
authors.initials: J
authors.lastname: Lalongé
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada.
authors.forename: Mariel
authors.initials: M
authors.lastname: Gonzales
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Douglas
authors.initials: D
authors.lastname: Hayami
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Martin
authors.initials: M
authors.lastname: Juneau
authors.affiliation: Cardiovascular Prevention and Rehabilitation Center (ÉPIC), Montreal Heart Institute, Montreal, Quebec, Canada; Research Center, Montreal Heart Institute and University of Montreal, Montreal, Quebec, Canada; Department of Medicine, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Anil
authors.initials: A
authors.lastname: Nigam
authors.affiliation: Laboratory MOVE (EA 6314), Faculty of Sport Sciences, University of Poitiers, Poitiers, France; Department of Kinesiology, University of Montreal, Montreal, Quebec, Canada.
authors.forename: Laurent
authors.initials: L
authors.lastname: Bosquet
mesh_terms: D000368:Aged; D001794:Blood Pressure; D018660:Blood Pressure Monitoring, Ambulatory / Q000379:methods; D015444:Exercise / Q000502:physiology*; D005260:Female; D000072696:High-Intensity Interval Training / Q000379:methods*; D006801:Humans; D006973:Hypertension / Q000628:therapy*; D007101:Immersion; D008297:Male; D008875:Middle Aged; D017410:Practice Guidelines as Topic; D011897:Random Allocation; D014867:Water
chemical_list: D014867:Water
keywords: Ambulatory blood pressure monitoring; arterial stiffness; high-intensity interval exercise; water exercise