Key result
The number of slow-myosin-containing fibres remains constant from birth to adulthood in the rat lumbrical muscle, suggesting no interconversion between fast- and slow-twitch fibres.
Authors
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Limits inferences on fibre-type stability to rodent skeletal muscle; leaves open relevance to human cardiac remodelling.
Jones et al. (1987) studied Post-natal muscle development. Post-natal development was evaluated on Muscle fibre number and type. The number of slow-myosin-containing fibres remains constant from birth to adulthood in the rat lumbrical muscle, suggesting no interconversion between fast- and slow-twitch fibres.
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