Greater Short-Time Recovery of Peripheral Fatigue After Short- Compared With Long-Duration Time Trial

Autor: Christian Froyd, Fernando G. Beltrami, Guillaume Y. Millet, Brian R. MacIntosh, Timothy D. Noakes

Publikováno v: Frontiers in Physiology, Vol 11 (2020)

The kinetics of recovery from neuromuscular fatigue resulting from exercise time trials (TTs) of different durations are not well-known. The aim of this study was to determine if TTs of three different durations would result in different short-term r

Externí odkaz: https://doaj.org/article/0d8a131f2bcc481c90840b40c1bf93d3

Changes in Achilles tendon stiffness and energy cost following a prolonged run in trained distance runners.

Autor: Jared R Fletcher, Brian R MacIntosh

Publikováno v: PLoS ONE, Vol 13, Iss 8, p e0202026 (2018)

During prolonged running, the magnitude of Achilles tendon (AT) length change may increase, resulting in increased tendon strain energy return with each step. AT elongation might also affect the magnitude of triceps surae (TS) muscle shortening and s

Externí odkaz: https://doaj.org/article/ce6aaf5c9e5844219ae458caf69cbf6e

Running Economy from a Muscle Energetics Perspective

Autor: Jared R. Fletcher, Brian R. MacIntosh

Publikováno v: Frontiers in Physiology, Vol 8 (2017)

The economy of running has traditionally been quantified from the mass-specific oxygen uptake; however, because fuel substrate usage varies with exercise intensity, it is more accurate to express running economy in units of metabolic energy. Fundamen

Externí odkaz: https://doaj.org/article/088b1d0f463c4c7a83a30f1866251067

Plyometric exercise enhances twitch contractile properties but fails to improve voluntary rate of torque development in highly trained sprint athletes

Autor: Haiko Bruno Zimmermann, Juliano Dal Pupo, Raphael Luiz Sakugawa, Brian R. MacIntosh, Fernando Diefenthaeler, Filipe E. Costa

Publikováno v: European Journal of Sport Science. 22:857-866

Purpose: The objective of this study was to evaluate a plyometric conditioning activity (3 sets of 5 countermovement jumps, [CA]) for twitch properties and voluntary knee extension. Methods: After a familiarization session, fourteen highly trained sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d295ca619b005e959258796167960ab
https://doi.org/10.1080/17461391.2021.1916083

Additional in‐series compliance does not affect the length dependence of activation in rat medial gastrocnemius

Autor: Brian R. MacIntosh, Anders M. Kristensen, Keenan B. MacDougall

Publikováno v: MacDougall, K B, Kristensen, A M & MacIntosh, B R 2020, ' Additional in-series compliance does not affect the length dependence of activation in rat medial gastrocnemius ', Experimental Physiology, vol. 105, no. 11, pp. 1907-1917 . https://doi.org/10.1113/EP088940

New Findings: What is the central question of this study? The length dependence of activation (LDA) is typically explained by a length-dependent increase in calcium sensitivity, but recently calcium-independent mechanisms have been suggested: does ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6730fd7a48f284af90834f38bca5795a
https://doi.org/10.1113/ep088940