High-intensity interval training improves acute plasma volume responses to exercise that is age dependent

Physiological Reports
Georges JabbourLuc J Martin

Abstract

Plasma volume (PV) is affected by several factors including age, physical training and, acutely, by exercise intensity. The purpose of this study was to investigate the effects of 6 weeks of high-intensity interval training (HIT) on PV and blood pressure (BP) changes among sedentary individuals. Thirty subjects aged between 18 and 71 years [body mass index=30.1(1.2) kg/m2 ] completed a 6-weeks HIT program. Anthropometric and fitness variables were obtained at pre- and post- HIT. PV variations during warm-up and after supramaximal cycling test (SCT) were calculated using two methods based on Hematocrit (Ht) and Hemoglobin (Hb) measures. After both the warm-up and SCT, PV decreased significantly among participants at pre- and at post-HIT (P < 0.01). However, PV decreases were significantly greater at pre-HIT compared with post-HIT during warm-up and after SCT (P < 0.01, respectively). In addition, at pre-HIT, a positive relationship was found between age and both PV variations at warm-up and after SCT (r2  = 0.55 and r2  = 0.46; P < 0.01 respectively). However, no relationship was found during the post-HIT period. After SCT and after both visits, only body weight predicted 22% of PV variations. In the current study, a significant...Continue Reading

References

Jul 1, 1977·British Journal of Diseases of the Chest·S G Spiro
Apr 1, 1990·International Journal of Sports Medicine·E F CoyleA R Coggan
Aug 1, 1990·Medicine and Science in Sports and Exercise·H J GreenD C Painter
Mar 1, 1990·Nutrition Reviews·B J Rolls, P A Phillips
Aug 1, 1987·Journal of Applied Physiology·B J FreundG M Hashiro
May 1, 1987·Journal of Applied Physiology·H J GreenM T Sharratt
Aug 1, 1974·Journal of Applied Physiology·D B Dill, D L Costill
May 1, 1972·Journal of Applied Physiology·W Van Beaumont
Sep 20, 1984·The New England Journal of Medicine·P A PhillipsL Wollner
Sep 20, 1984·The New England Journal of Medicine·A Leaf
Apr 1, 1994·Medicine and Science in Sports and Exercise·M J Luetkemeier, E L Thomas
Jan 1, 1994·European Journal of Applied Physiology and Occupational Physiology·S M Shirreffs, R J Maughan
Oct 1, 1995·Journal of Applied Physiology·W L Kenney, C W Ho
Jan 1, 1996·European Journal of Applied Physiology and Occupational Physiology·H HebestreitO Bar-Or
Dec 31, 1997·Medicine and Science in Sports and Exercise·B KripD Warburton
Feb 25, 1998·Medicine and Science in Sports and Exercise·N S StachenfeldE R Nadel
Aug 6, 2003·Medicine and Science in Sports and Exercise·Cora L CraigPekka Oja
Jan 22, 2005·Journal of Hypertension·Véronique A Cornelissen, Robert H Fagard
Mar 21, 2009·International Journal of Sports Medicine·H ZouhalA Gratas-Delamarche
Feb 16, 2010·Metabolism: Clinical and Experimental·Laura J WhyteAndrew J Cathcart
Aug 3, 2010·Clinical Hemorheology and Microcirculation·Sajad Ahmadizad, Minoo Bassami
Apr 19, 2011·Clinical Hemorheology and Microcirculation·Mahmoud S El-SayedAyad Abuelgasem Omar
Feb 1, 2012·The Journal of Physiology·Martin J GibalaJohn A Hawley
Nov 2, 2012·International Journal of Sports Physiology and Performance·Abderraouf Ben AbderrahmanHassane Zouhal
Jan 11, 2013·Journal of Strength and Conditioning Research·Richard J Bloomer, Tyler M Farney
Feb 21, 2014·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Jenna B Gillen, Martin J Gibala

❮ Previous
Next ❯

Software Mentioned

SPSS Statistics

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.