Hemoglobin, hematocrit and plasma volume variations following combined sprint and strength: effect of advanced age

Sellami, M., Ben Abderrahmen, A., Dhahbi, W., Hayes, Lawrence ORCID: https://orcid.org/0000-0002-6654-0072 and Zouhal, H. (2021) Hemoglobin, hematocrit and plasma volume variations following combined sprint and strength: effect of advanced age. Science & Sports, 36 (1). e13-e21.

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Abstract

Objectives: The study investigated the effect of combined sprint and resistance training (CSRT) on red blood cell (RBC) count, hemoglobin (Hb), hematocrit (Hct), plasma volume (PV) variation at rest and during exercise.

Equipment and methods: Twenty-eight moderately trained were randomly assigned into a young trained (YT), young control (YC), middle-aged trained (MAT), and middle-aged control (MAC) group. Before (P1), and after (P2) CSRT, blood samples were collected at rest and after exercise.

Results: At P1, Hct was significantly (P <.05) greater in young compared to middle-aged groups. At P1, PV decrease during exercise was significantly (P <.05) higher in middle-aged compared to young groups. Following CSRT, resting RBC count and Hb increased significantly (P<.05) in MAT. At P2, Following CSRT, Hct decreased significantly (P<.05) in trained groups. At P2, no significant (P >.05) age-effect between MAT and YT was observed for Hct.

Conclusion: CSRT increases RBC count and Hb in middle-aged men, and ameliorates the effect of age in Hct. Such adaptations may improve cardiovascular fitness of middle-aged individuals, and may be preventative of subsequent declines with age.

Item Type:	Article
Journal / Publication Title:	Science & Sports
Publisher:	Elsevier
ISSN:	0765-1597
Departments:	Academic Departments > Medical & Sport Sciences (MSS) > Health and Medical Sciences
Additional Information:	Variations d’hémoglobine, hématocrite et volume plasmatique après un entraînement combiné de sprint et de musculation : effet de l’avance en âge [title in French]
Depositing User:	Insight Administrator
SWORD Depositor:	Insight Administrator
Date Deposited:	03 Feb 2020 12:11
Last Modified:	13 Jan 2024 11:46
URI:	https://insight.cumbria.ac.uk/id/eprint/5348

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