Key result
Asymmetric physical loads on the upper limbs altered microcirculation parameters bilaterally, with left-arm exercises increasing blood flow and right-arm exercises decreasing it, showing more pronounced changes on the left side.
Why the study?
The study was conducted to examine the functional asymmetry of oscillatory processes of the microcirculatory bed during physical loads on the upper limbs.
Observational (n=5)
No
This physiological study demonstrates functional asymmetry in the regulation of microcirculation in the upper limbs during physical exercise.
Suggests functional asymmetry in upper-limb microcirculation during exercise; hypothesis-generating for vascular research and should not yet change practice.
Purpose – the study the functional asymmetry of oscillatory processes of microcirculatory bed at physical loads on the upper limbs. Material and methods. Microcirculation parameters were measured in 5 healthy volunteers (men aged 50–55 years) by laser Doppler flowmetry (LDF). LDF signal sensors were fixed symmetrically on the lower parts of the right and left shoulders (3 cm above the elbow bend). Physical exercise consisted of machs left or right hand in the standing position for 1 min. Measurements were performed in 3 conditions: 1 – initial state, 2 – immediately after exercise, 3 – 5 min after load termination The changes in the mean perfusion value and the components of the amplitude-frequency spectrum of blood flow fluctuations (myogenic, neurogenic, respiratory and cardiac), as well as the correlation between the changes in all parameters of the right and left sides of the observation were evaluated. Results. Asymmetry of changes in microcirculation parameters and correlations between them under the physical loads on the upper limbs was revealed. It is shown that both left and right machs change the microcirculation parameters of both the left and right sides, and the changes on the left are more pronounced than on the right. It is shown that after the left machs the blood flow on the left and right increases, and after the right machs – reduced. After loads the right side is recovering more slowly than the left. Conclusions. Our results illustrate the specific regulation of blood flow in micro vessels of paired organs, which is associated with functional asymmetry. The physiological mechanisms for this asymmetry require further experimental and clinical studies.
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Л. В. Мезенцева (2019) conducted an observational in Healthy (n=5). Asymmetric physical loads on the upper limbs (arm machs) vs. Baseline (initial state) was evaluated on Mean perfusion value and amplitude-frequency spectrum components of blood flow fluctuations. Asymmetric physical loads on the upper limbs altered microcirculation parameters bilaterally, with left-arm exercises increasing blood flow and right-arm exercises decreasing it, showing more pronounced changes on the left side.
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