Results 51 to 60 of about 41,366 (306)

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

Advanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk, Lukas Benecke, Chokri Cherif, Johannes Mersch   +3 more
wiley   +1 more source

Age-related differences in skeletal muscle microvascular response to exercise as detected by contrast-enhanced ultrasound (CEUS). [PDF]

PLoS ONE, 2017
BACKGROUND:Aging involves reductions in exercise total limb blood flow and exercise capacity. We hypothesized that this may involve early age-related impairments of skeletal muscle microvascular responsiveness as previously reported for insulin but not ...
Wulf Hildebrandt, Hans Schwarzbach, Anita Pardun, Lena Hannemann, Björn Bogs, Alexander M König, Andreas H Mahnken, Olaf Hildebrandt, Ulrich Koehler, Ralf Kinscherf   +9 more
doaj   +1 more source

Isometric Handgrip Exercise Training Improves Spirometric Parameters and Pulmonary Capacity

Pathophysiology, 2021
Decline in normal physiological pulmonary function has been attributed to premorbid conditions such as prehypertension. Research evidence suggests that physical activity reduces age-related decline in pulmonary function and improves the efficiency of the
Ogbutor Udoji Godsday, Nwangwa Eze Kingsley, Nwogueze Bartholomew Chukwuebuka, Chukwuemeka Ephraim, Ezunu Emmanuel, Agbonifo-Chijiokwu Ejime, Igweh John Chukwuka   +6 more
doaj   +1 more source

A pilot randomised controlled trial of the feasibility of using body scan and isometric exercises for reducing urge to smoke in a smoking cessation clinic.

, 2008
BACKGROUND: The main cause of relapse in smokers attempting to quit is inability to resist urges to smoke. Pharmacotherapy ameliorates but does not entirely prevent urges to smoke when abstinent, so other methods to resist urges to smoke might be helpful.
Stenner, S, Neha Prasad, Stenner, Sarah, Michael Ussher, Lemees Al-Chalabi, Prasad, Neha, Ussher, M, Prasad Neha, Steed, Lucy, Jane Beach, Al-Chalabi, L, Stenner Sarah, Al-Chalabi Lemees, Aveyard Paul, Prasad, N, Aveyard, P, Paul Aveyard, Beach Jane, Beach, Jane, Al-Chalabi, Lemees, Steed Lucy, Ussher, Michael, Ussher Michael, Steed, L, Beach, J, Aveyard, Paul, Lucy Steed, Sarah Stenner   +27 more
core   +1 more source

Immediate post-isometric exercise cardiovascular responses are associated with training-induced resting systolicblood pressure reductions [PDF]

, 2015
Purpose: The purpose of this study was twofold: (1) to investigate the effect of four-weeks of bilateral-leg isometric exercise training on the immediate isometric post-exercise cardiovascular responses, and (2) to ascertain whether any changes in ...
Wiles, J., Howden, R., Devereux, G.
core   +1 more source

New‐Era Polymer Thermoelectrics: Material Innovations, Doping Frontiers, Decoupling Strategies, and Unconventional Applications

Advanced Materials, EarlyView.
The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley   +1 more source

Factors mediating the pressor response to isometric muscle contraction: An experimental study in healthy volunteers during lower body negative pressure.

PLoS ONE, 2020
Whilst both cardiac output (CO) and total peripheral resistance (TPR) determine mean arterial blood pressure (MAP), their relative importance in the pressor response to isometric exercise remains unclear.
Niels A Stens, Jonny Hisdal, Espen F Bakke, Narinder Kaur, Archana Sharma, Einar Stranden, Dick H J Thijssen, Lars Øivind Høiseth   +7 more
doaj   +1 more source

Effect of Isometric Exercise on QTc Interval

JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH, 2014
The QTc interval is affected by heart rate, autonomic nervous system and diseases like diabetes. However, the affect of exercise which alters autonomic nervous system activity, on QTc is not clear. On the other hand, the incidence of sudden cardiac death increases many fold post exercise.
Arati Meher, Manasi Bhattacharjee, Parikha Rampal, Raj Kapoor, Renuka Sharma   +4 more
openaire   +3 more sources

The relationships between exercise intensity, heart rate, and blood pressure during an incremental isometric exercise test

, 2007
Currently, it is not possible to prescribe isometric exercise at an intensity that corresponds to given heart rates or systolic blood pressures. This might be useful in optimizing the effects of isometric exercise training.
Wiles, J., Swaine, Ian L., Wiles, Jonathan D., Allum, S., Swaine, I., Allum, Simon R., Coleman, D., Coleman, Damian A.   +7 more
core   +1 more source

E. coli Extracellular Matrix: A Tunable Composite With Hierarchical Structure

Advanced Materials, EarlyView.
The complex composite‐like mechanical behavior of E. coli biofilm matrix is the result of a synergic contribution of the rigid curli and swelling pEtN‐cellulose, and emerges from specific ratio and assembly conditions. The interactions between the two fibers govern biofilm hydration and characteristic wrinkling patterns, providing crucial insights for ...
Macarena Siri, Agustín Mangiarotti, Anne Seewald, Nikolai Rosenthal, Shahrouz Amini, Emeline Raguin, Peter Fratzl, Cécile M. Bidan   +7 more
wiley   +1 more source