Key result
A short quick release reducing tension to zero during an isometric twitch stops heat production, resulting in 15 to 20% less energy liberated compared to an isometric contraction.
Population
Muscle preparation (model not specified in abstract)
Comparison
Sudden reduction of tension to zero by a short… vs Isometric contraction (tension maintained)
Design
Preclinical
Authors
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No immediate clinical implications for cardiac energetics; leaves open tension-feedback mechanisms in human myocardium.
Effect estimate: 15 to 20% less
The study suggests a positive feedback mechanism in muscle twitches where tension prolongs activity and activity prolongs tension, leading to the liberation of extra energy.
Archibald Vivian Hill (1964) studied Muscle twitch. Short quick release reducing tension to zero vs. Isometric contraction was evaluated on Energy liberated / heat production (15 to 20% less). A short quick release reducing tension to zero during an isometric twitch stops heat production, resulting in 15 to 20% less energy liberated compared to an isometric contraction.
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