Thread by @nick_krontiris

This one provides further evidence to the notion that that muscle growth does not contribute to the increases in strength that occur after resistance training.

- Often the presence of muscle growth is used as evidence for its causal role in improving strength.

- However, the purported paradigm that muscle growth contributes to strength change became less clear with the emergence of low-load (or no external load) resistance training...

...where muscle growth was similar to high load exercise but strength in the task that was being trained differed.

Refs:
doi.org/10.1016/j.exge…
doi.org/10.1016/j.phys…
doi.org/10.3389/fphys.…
doi.org/10.1111/sms.12…
doi.org/10.1152/japplp…

- But, this difference can simply be explained by the principle of specificity, and not muscle growth.

For example, those who repeatedly lift high loads using a specific device will be stronger on than specific device when compared to individuals repeatedly lifting lower loads.

- Therefore, understanding the mechanisms for increases in both specific and non-specific strength may be important for better understanding how individuals get stronger.

- Given the suggestion that non-specific strength may be related to muscle growth, the authors sought to investigate the possible mediating effects of muscle growth on non-specific muscle strength following a six-week training intervention.

- In this study, findings failed to provide support for the hypothesis that muscle growth is a mechanism for exercise-induced changes in non-specific strength, as no evidence of mediation for effects of muscle thickness changes on non-specific strength was found.

Does muscle growth mediate changes in a non-specific strength task?

doi.org/10.1111/cpf.12…

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