Isotonic and isometric exercise interventions improve the hamstring muscles' strength and flexibility: A narrative review

AF Widodo, CW Tien, CW Chen, SC Lai - Healthcare, 2022 - mdpi.com
Background: Hamstring weakness has been associated with an increased risk of hamstring
strain, a common sports injury that occurs when athletes perform actions such as quick …

Effects of repeated sprinting on hamstring shear modulus pattern and knee flexor neuromuscular parameters

R Pimenta, T Lopes, JP Correia, AP Veloso - Scientific Reports, 2023 - nature.com
The purpose of the present study was to examine the acute effects of a maximum repeated
sprint protocol on (1) hamstring shear modulus and (2) knee flexor neuromuscular …

Changes in hamstrings' active stiffness during fatigue tasks are modulated by contraction duration rather than intensity

A Martínez-Serrano, R Radaelli, TT Freitas… - Scientific Reports, 2024 - nature.com
Despite the increase in research of hamstring stiffness through the use of ultrasound-based
shear wave elastography, the active stiffness of biceps femoris long head (BFlh) and …

Calculating sample entropy from isometric torque signals: methodological considerations and recommendations

PC Raffalt, JM Yentes, SR Freitas, JR Vaz - Frontiers in Physiology, 2023 - frontiersin.org
We investigated the effect of different sampling frequencies, input parameters and
observation times for sample entropy (SaEn) calculated on torque data recorded from a …

Effects of repeated sprints on hamstring active shear modulus pattern and neuromuscular parameters in football players with and without hamstring strain injury history …

R Pimenta, T Lopes, P Bruno, A Veloso - Applied Sciences, 2023 - mdpi.com
Featured Application Hamstring strain injuries occur particularly in the later stages of a
football match, suggesting that fatigue may play an important role. Moreover, sprinting is the …

Hamstring stiffness and strength responses to repeated sprints in healthy nonathletes and soccer players with versus without previous injury

SR Freitas, R Radaelli, R Oliveira, JR Vaz - Sports Health, 2023 - journals.sagepub.com
Background: The effect of 10× 30 m repeated sprints on passive and active stiffness of
semitendinosus (ST) and biceps femoris long head (BFlh), and knee flexor maximal …

Effects of fatigue on hamstrings and gluteus maximus shear modulus in hip extension and knee flexion submaximal contraction task

R Pimenta, P Almeida, JP Correia, PM Bruno… - Sports …, 2023 - Taylor & Francis
This study examined the effects of fatigue on hamstring muscles and gluteus maximus
passive and active shear modulus in hip extension (HE) and knee flexion (KF) at 20% of …

Semitendinosus and biceps femoris long head active stiffness response until failure in professional footballers with vs. without previous hamstring injury

SR Freitas, B Mendes, T Firmino… - European journal of …, 2022 - Taylor & Francis
This study sought to examine the active stiffness of semitendinosus (ST) and biceps femoris
long head (BFlh) during a knee flexor isometric contraction at 20% of maximal voluntary …

Quantifying Active and Passive Stiffness in Plantar Flexor Muscles Following Intermittent Maximal Isometric Contractions Using Shear Wave Elastography

L Vincent, M Zidi, P Portero, K Belghith… - Ultrasound in Medicine …, 2024 - Elsevier
Objective This study aimed:(i) to investigate the impact of fatigue, triggered by maximal
isometric contraction exercises, on the active and passive stiffness of plantar flexors (PF) …

Effect of hyperthermia on simulated muscle activation in female when crossing obstacle

IL Wang, CY Gu, TH Lei, Y Su, S Yao, T Mündel… - Scientific Reports, 2024 - nature.com
It is well known that hyperthermia greatly impairs neuromuscular function and dynamic
balance. However, whether a greater level of hyperthermia could potentially alter the lower …