Results 71 to 80 of about 41,366 (306)

Quadriceps Oxygenation during Isometric Exercise in Sailing

International Journal of Sports Medicine, 2008
The aim of the present study was to investigate why blood lactate after prolonged quadriceps contraction during hiking is only marginally increased. Eight sailors performed five 3-min hiking bouts interspersed with 5-s recovery periods. Whole body oxygen uptake, heart rate and lactate were recorded, along with continuous-wave near-infrared spectroscopy
Vogiatzis, I., Tzineris, D., Athanasopoulos, D., Georgiadou, O., Geladas, N.   +4 more
openaire   +3 more sources

Autonomic Mechanisms in Hemodynamic Responses to Isometric Exercise [PDF]

Journal of Clinical Investigation, 1974
Selective autonomic blockade with intravenous propranolol, practolol, atropine, and combined atropine-propranolol was utilized to elucidate the role of the autonomic nervous system in the hemodynamic responses in young adult male volunteers to handgrip sustained at 30% of maximal voluntary contraction for 3 min.
C E, Martin, J A, Shaver, D F, Leon, M E, Thompson, P S, Reddy, J J, Leonard   +5 more
openaire   +2 more sources

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

Advanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis, Luis Carlos Sanjuan Acosta, Shubh P. Mehta, Baiyan Qi, Yang Yang, Luis Solorio, Craig J. Goergen, David J. Cappelleri   +7 more
wiley   +1 more source

Hemodynamic Responses to a Handgrip Exercise Session, with and without Blood Flow Restriction, in Healthy Volunteers

Physiologia, 2023
Exercising at submaximal intensity with a hand dynamometer causes mild hemodynamic adaptations that can improve cardiovascular function. However, hemodynamic responses and fatigue have not been adequately studied in an isometric exercise protocol ...
Spyridoula Filippou, Paris Iakovidis, Dimitrios Lytras, Konstantinos Kasimis, Freideriki Solomonidou, Christos Kopsidas   +5 more
doaj   +1 more source

Continuous cardiac autonomic and haemodynamic responses to isometric exercise in females [PDF]

, 2020
Purpose: Hypertension is associated with impaired haemodynamic control mechanisms and autonomic dysfunction. Isometric exercise (IE) interventions have been shown to improve autonomic modulation and reduce blood pressure (BP) in predominantly male ...
Wiles, J., O'Driscoll, J., Taylor, K., Vilda, M., Boucher, C.   +4 more
core   +1 more source

Robotic Control for Human–Robot Collaborative Assembly Based on Digital Human Model and Reinforcement Learning

Advanced Robotics Research, EarlyView.
This work presents a robotic control method for human–robot collaborative assembly based on a biomechanics‐constrained digital human model. Reinforcement learning is used to generate physiologically plausible human motion trajectories, which are integrated into a virtual environment for robot control learning.
Bitao Yao, Hongzhou Ai, Wenjun Xu, Zude Zhou, Lihui Wang   +4 more
wiley   +1 more source

Effects of Isometric Exercise on Cardiac Performance [PDF]

Circulation, 1971
Twenty-two patients with heart disease performed a standard isometric exercise, sustained handgrip, during the course of diagnostic cardiac catheterization. During handgrip an increase in mean arterial pressure (average 87 to 104 mm Hg) was noted in all patients.
C, Kivowitz, W W, Parmley, R, Donoso, H, Marcus, W, Ganz, H J, Swan   +5 more
openaire   +2 more sources

3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications

Advanced Robotics Research, EarlyView.
Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun, Jan Petrš, Omar Aloui, Dario Floreano   +3 more
wiley   +1 more source

Baroreflex and autonomic responses to two equated isometric resistance exercise protocols in females

Revista Brasileira de Cineantropometria e Desempenho Humano
Different resistance exercise sessions/set configurations seem to lead to distinct hemodynamic, baroreflex, and autonomic responses. Nevertheless, the baroreflex and autonomic reactivities to an equated impulse-to-rest ratio (I:R) isometric exercise ...
Carlos Brendo Ferreira Reis, Igor Alves Mello, Victor Hugo Gasparini Neto, Lucas Rangel Affonso de Miranda, Letícia Nascimento Santos Neves, Luciana Carletti, Guilherme Fleury Fina Speretta, Richard Diego Leite   +7 more
doaj   +1 more source

Acute blood pressure responses after different isometric handgrip protocols in hypertensive patients

Clinics, 2018
OBJECTIVE: The present study analyzed blood pressure responses after a single session of isometric handgrip exercise performed with different volumes and intensities by patients with hypertension.
Gustavo O. Silva, Breno Q. Farah, Antonio H. Germano-Soares, Aluísio Andrade-Lima, Fabio S. Santana, Sérgio LC. Rodrigues, Raphael M. Ritti-Dias   +6 more
doaj   +1 more source