Marco Narici

TL;DR: Bed rest-induced AR is much greater in the older than in younger adults, and this metabolic abnormality is a key mechanism for sarcopenia of aging and inactivity.

TL;DR: In this article, the authors present the principal US measures and field of applications in the context of elite sports; discuss, from a methodological perspective, the strengths and shortcomings of US imaging for the assessment of muscle and tendon properties; and provide future directions for research and application.

TL;DR: The present results show a significant increase in antagonist muscle coactivation with strength training in older women, putting forward the hypothesis that with a training-induced gain in agonist muscles' torque, stabilization of the ankle joint by increasing antagonist coactivation is needed because of a changed ratio of maximal PF torque to maximal DF torque.

TL;DR: The hypothesis is put forward that in addition to the previously well-appreciated mechanotransduction changes, neural and endocrine signals are altered in response to spaceflight and that these may have both negative and positive consequences, at least for invertebrates, with respect to health in space.