Assessment of Microvascular Hemodynamic Adaptations in Finger Flexors of Climbers

Climbing performance is greatly dependent on the endurance of the finger flexors which, in turn, depends on the ability to deliver and use oxygen within the muscle. Near-infrared spectroscopy (NIRS) and diffuse correlation spectroscopy (DCS) have provided new possibilities to explore these phenomena...

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Bibliographic Details
Published in:Bioengineering (Basel) 2024-04, Vol.11 (4), p.401
Main Authors: Ferrer-Uris, Blai, Busquets, Albert, Beslija, Faruk, Durduran, Turgut
Format: Article
Language:English
Subjects:
Adaptation
Biosynthesis
Blood
Blood flow
Climbing
diffuse correlation spectroscopy
endothelial function
finger flexors
Flexors
Hemodynamics
Hyperemia
Infrared spectra
Infrared spectroscopy
Ischemia
Metabolism
Metabolites
Microvasculature
Muscle contraction
Muscles
Muscular function
Musculoskeletal system
Near infrared radiation
near-infrared spectroscopy
Occlusion
Oxygen
Oxygen saturation
Oxyhemoglobin
Rock climbing
Shear stress
Spectrum analysis
sport climbing
Structure-function relationships
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Summary:Climbing performance is greatly dependent on the endurance of the finger flexors which, in turn, depends on the ability to deliver and use oxygen within the muscle. Near-infrared spectroscopy (NIRS) and diffuse correlation spectroscopy (DCS) have provided new possibilities to explore these phenomena in the microvascular environment. The aim of the present study was to explore climbing-related microvascular adaptations through the comparison of the oxygen concentration and hemodynamics of the forearm between climbers and non-climber active individuals during a vascular occlusion test (VOT). Seventeen climbers and fifteen non-climbers joined the study. Through NIRS and DCS, the oxyhemoglobin (O Hb) and deoxyhemoglobin (HHb) concentrations, tissue saturation index (TSI), and blood flow index (BFI) were obtained from the flexor digitorum profundus during the VOT. During the reactive hyperemia, climbers presented greater blood flow slopes ( = 0.043, = 0.573), as well as greater O Hb maximum values ( = 0.001, = 1.263) and HHb minimum values ( = 0.009, = 0.998), than non-climbers. The superior hemodynamics presented by climbers could indicate potential training-induced structural and functional adaptations that could enhance oxygen transportation to the muscle, and thus enhance muscle endurance and climbing performance.
ISSN:2306-5354
2306-5354
DOI:10.3390/bioengineering11040401