Key result
The latency release method estimated activation heat in rabbit right ventricular papillary muscles to be 3.27 +/- 0.40 mJ g-1, accounting for approximately 30% of total active energy flux.
Population
Right ventricular papillary muscles of rabbits
Design
Preclinical
Authors
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Highlights activation heat as key to cardiac bioenergetics; extends skeletal comparisons but leaves open human translation.
In rabbit cardiac muscle, activation heat accounts for approximately 30% of total active energy flux per contraction, a fraction comparable to that found in skeletal muscle.
Gibbs et al. (1988) studied Rabbit cardiac muscle. Latency release method vs. Gradual pre-shortening and hyperosmotic solutions was evaluated on Activation heat. The latency release method estimated activation heat in rabbit right ventricular papillary muscles to be 3.27 +/- 0.40 mJ g-1, accounting for approximately 30% of total active energy flux.
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