Results 31 to 40 of about 26,539 (332)

Effects of Pre-, Post- and Intra-Exercise Hyperbaric Oxygen Therapy on Performance and Recovery: A Systematic Review and Meta-Analysis

Frontiers in Physiology, 2021
Background: As a World Anti-doping Agency (WADA)-approved treatment, hyperbaric oxygen (HBO2) therapy has been used to improve exercise performance in sports practice.Objective: We aimed to investigate the effect of pre-, post-, and intra-exercise HBO2 ...
Xizhang Huang, Xizhang Huang, Ran Wang, Zheng Zhang, Gang Wang, Binghong Gao   +5 more
doaj   +1 more source

Recrystallization and damage of ice in winter sports [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017
Ice samples, after sliding against a steel runner, show evidence of recrystallization and microcracking under the runner, as well as macroscopic cracking throughout the ice. The experiments that produced these ice samples are designed to be analogous to sliding in the winter sport of skeleton.
Alexandra Seymour-Pierce, Ben Lishman, Peter Sammonds   +2 more
openaire   +3 more sources

Submicron Metasurface Reconfigured Multiband Smart Windows

Advanced Functional Materials, EarlyView.
This work presents a submicron metasurface reconfigured multiband thermochromic smart window. By integrating subwavelength nanostructures into a Fabry−Perot resonator configuration, it mitigates conventional trade‐offs to simultaneously deliver high luminous transmittance and robust solar heating and radiative cooling modulation capabilities ...
Guanya Wang, Shancheng Wang, Bin Li, Xinyi Tian, Rong Liu, Jian Chen, Zhendong Dai, Shouqin Tian, Yi Long   +8 more
wiley   +1 more source

Sex Differences in Performance and Pacing Strategies During Sprint Skiing

Frontiers in Physiology, 2019
Purpose: This study aimed to compare performance and pacing strategies between elite male and female cross-country skiers during a sprint competition on snow using the skating technique.Methods: Twenty male and 14 female skiers completed an individual ...
Erik Petrus Andersson, Andrew Govus, Andrew Govus, Oliver Michael Shannon, Kerry McGawley   +4 more
doaj   +1 more source

Programmable 3D Photovoltaics via Mechanically Origami‐Coded Interlocked 3D Kirigami and Nano‐Root Anchored AgNWs–In–Ga Multiphasic Alloy Conductor

Advanced Materials, EarlyView.
Mechanically origami‐coded 3D kirigami photovoltaics convert a single extension–release cycle into deterministic self‐folding, reconfiguring planar solar cells into programmable 3D modules. Distinct coding strategies enable either ultrahigh stretchability (500% system strain) or ultrahigh initial effective areal coverage (225%).
Seok Joon Hwang, Jiwon Ryu, Byungsoo Kang, Injong Oh, Dae‐Hee Cho, YoungHoi Cho, Seung S. Lee, Dong Hoe Kim, Deokjae Choi, Gee Yeong Kim, Heesuk Jung, Taehee Kim, Hyeonggeun Yu, Seungjun Chung, Byoung Koun Min, Phillip Lee   +15 more
wiley   +1 more source

Reliability agreement in foul and penalty judgements between officials in the Swedish hockey league

Frontiers in Sports and Active Living
IntroductionOfficials are essential in terms of player safety and injury prevention, especially in contact team sports such as ice hockey, where numerous fast pace and high force contacts occur.
Glenn Björklund, Olivia Procter, Mikael Swarén, Mikael Swarén   +3 more
doaj   +1 more source

Effects of Acute Exercise and Training on the Sarcoplasmic Reticulum Ca2+ Release and Uptake Rates in Highly Trained Endurance Athletes

Frontiers in Physiology, 2020
Little is presently known about the effects of acute high-intensity exercise or training on release and uptake of Ca2+ by the sarcoplasmic reticulum (SR).
Kasper Degn Gejl, Erik P. Andersson, Joachim Nielsen, Hans-Christer Holmberg, Hans-Christer Holmberg, Niels Ørtenblad   +5 more
doaj   +1 more source

Lead Halide Perovskite Photoelectrocatalysis

Advanced Materials, EarlyView.
Lead halide perovskite semiconductors have emerged as highly promising materials for solar fuel and chemical synthesis. This perspective discusses advances made in the rational photoelectrode design to improve solar‐to‐chemical conversion, product scope, and scalability.
Virgil Andrei
wiley   +1 more source

Elite skiers' experiences of heat‐ and moisture‐exchanging devices and training and competition in the cold: A qualitative survey

Health Science Reports, 2023
Background and Aims Winter endurance athletes have a high prevalence of exercise‐induced bronchoconstriction (EIB) and asthma, probably due to repeated and prolonged inhalation of cold and dry air.
Mats Jong, Helen G. Hanstock, Nikolai Stenfors, Mats Ainegren   +3 more
doaj   +1 more source

Toward a Unified Mechanistic Understanding of Polymer Electrolytes for Advanced Solid‐State Batteries

Advanced Materials, EarlyView.
Polymer electrolytes (PEs) are often indiscriminately grouped as “solid polymer electrolytes (SPEs)”, despite fundamental differences in their ion‐transport mechanisms. This Perspective establishes a mechanism‐based framework that distinguishes gel, quasi‐solid, and all‐solid polymer electrolytes based on their dominant ion‐transport pathways.
Jing Chen, Han Chen, Michel Armand, Gunther Brunklaus, Jang Wook Choi, Yan‐Bing He, Bumjoon J. Kim, Seung Woo Lee, Stefano Passerini, Meera Mohankumar, Patrick Theato, Marnix Wagemaker, Martin Winter, Qiang Zhang, Shujiang Ding, Zhiqun Lin   +15 more
wiley   +1 more source