What question did this study set out to answer?

This research aims to explore the relationship between blood flow, vascular state, and muscle performance during varying stimulus intervals.

April 1, 1965American Journal of Physiology-Legacy Content

Relations among activity, blood flow, and vascular state in skeletal muscle

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Population

Skeletal muscle

Comparison

Alteration of stimulus interval; intra-arterial… vs Different stimulus intervals; controlled versus…

Design

Preclinical

Authors

DWDavid L. WrightNorthern Illinois University RSRalph R. SonnenscheinUniversity of California, Los Angeles

Discussion

Member takes

Implication

These animal data should not inform clinical oxygen management; leaves open translation of arteriovenous extraction dominance to human cardiac and skeletal muscle.

Key Points

This research aims to explore the relationship between blood flow, vascular state, and muscle performance during varying stimulus intervals.
Controlled and spontaneous blood flow conditions were analyzed.
Vascular resistance, arteriovenous oxygen saturation difference, and oxygen consumption were measured.
Acetylcholine and d-tubocurarine were infused intra-arterially to assess their effects.
Vascular resistance decreased and oxygen consumption increased as the stimulus interval shortened.
Arteriovenous oxygen saturation was identified as a major contributor to changes in oxygen consumption.
The oxygen cost per unit of tension change rate stabilized as the stimulus interval was reduced.

Structured PICO

Population

Skeletal muscle

Intervention

Alteration of stimulus interval; intra-arterial infusion of acetylcholine or d-tubocurarine

Comparator

Different stimulus intervals; controlled versus spontaneous blood flow

Outcome

Vascular resistance, arteriovenous oxygen saturation difference, oxygen consumption, peak isometric tension, and blood flowsurrogate

The study demonstrates that during skeletal muscle activity, changes in oxygen consumption are primarily driven by alterations in arteriovenous oxygen difference rather than blood flow.

Cite This Study

Wright et al. (1965) studied this question.

synapsesocial.com/papers/6a76808b2e130d02afec0942 https://doi.org/10.1152/ajplegacy.1965.208.4.782

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Implication

These animal data should not inform clinical oxygen management; leaves open translation of arteriovenous extraction dominance to human cardiac and skeletal muscle.

Relations among activity, blood flow, and vascular state in skeletal muscle

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Relations among activity, blood flow, and vascular state in skeletal muscle

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Also Consider