Figure 7.

Schematic diagram illustrating the distinct contraction-specific hypertophic patterns in response to chronic ECC vs. CON RT in human vastus lateralis (image acquired by using extended field of view ultrasound technique): a similar increase in MT can indeed be reached either through a preferential addition of sarcomeres in-parallel (usually occurring after CON RT) with an increase in PA, or through a preferential addition of sarcomeres in-series (usually occurring after ECC RT), which is represented by an increase in Lf (Franchi et al., 2014, 2015). +++ = the preferential addition of either sarcomeres in-series or in-parallel (dependent on the contraction mode used) compared to + = likely to happen as a marginal response. The white lines highlight the initial pre-training scenario, whereas the red dotted lines represent a post-training hypertrophic state.