Reliability of forearm oxygen uptake during handgrip exercise: assessment by ultrasonography and venous blood gas

Physiological Reports
Stian Kwak NybergEivind Wang

Abstract

Assessment of forearm oxygen uptake (V˙O2 ) during handgrip exercise is a keenly investigated concept for observing small muscle mass metabolism. Although a combination of Doppler ultrasound measurements of brachial artery blood flow (Q˙) and blood gas drawn from a deep forearm vein has been utilized to calculate forearm V˙O2 for more than two decades, the applicability of this experimental design may benefit from a thorough evaluation of its reliability during graded exercise. Therefore, we evaluated the reliability of this technique during incremental handgrip exercise in ten healthy young (24 ± 3(SD) years.) males. V˙O2 and work rate (WR) exhibited a linear relationship (1.0 W: 43.8 ± 10.1 mL·min-1 ; 1.5 W: 53.8 ± 14.1 mL·min-1 ; 2.0 W: 63.4 ± 16.3 mL·min-1 ; 2.5 W: 72.2 ± 17.6 mL·min-1 ; 3.0 W: 79.2 ± 18.6 mL·min-1 ; r = 0.65, P < 0.01). In turn, V˙O2 was strongly associated with Q˙ (1.0 W: 359 ± 86 mL·min-1 ; 1.5 W: 431 ± 112 mL·min-1 ; 2.0 W: 490 ± 123 mL·min-1 ; 2.5 W: 556 ± 112 mL·min-1 ; 3.0 W: 622 ± 131 mL·min-1 ; r = 0.96; P < 0.01), whereas arteriovenous oxygen difference (a-vO2diff ) remained constant following all WRs (123 ± 11-130 ± 10 mL·L-1 ). Average V˙O2 test-retest difference was -0.4 mL·min-1 with ±2SD limi...Continue Reading

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Citations

Dec 31, 2019·American Journal of Physiology. Heart and Circulatory Physiology·Jacqueline K LimbergJaume Padilla
Apr 23, 2019·Medicine and Science in Sports and Exercise·Ryan S GartenAustin Michael
Nov 14, 2018·European Journal of Applied Physiology·Matthew A KilgasSteven J Elmer
Jul 11, 2021·The Journal of Physiology·Alexander B HansenJustin S Lawley

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Methods Mentioned

BETA
infrared spectroscopy

Software Mentioned

GraphPad Prism
SPSS

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