Results 71 to 80 of about 469,727 (275)

Morphometrics for sports mechanics: Showcasing tennis racket shape diversity

open access: yesPLOS ONE, 2022
Tennis racket design has changed from its conception in 1874. While we know that modern tennis rackets are lighter and have larger heads than their wooden predecessors, it is unknown how their gross shape has changed specifically. It is also unknown how racket shape is related to factors that influence performance, like the Transverse and Polar moments
Grant, RA, Taraborrelli, L, Allen, T
openaire   +6 more sources

The impact of urbanisation on social behaviour: a comprehensive review

open access: yesBiological Reviews, EarlyView.
ABSTRACT Urbanisation is a key driver of global environmental change and presents animals with novel stressors and challenges. It can fundamentally influence social behaviour and has the potential to reshape within‐ and between‐species social interactions. Given the role of social behaviour in reproductive fitness and survival, understanding how social
Avery L. Maune   +2 more
wiley   +1 more source

Propulsion efficiency in wheelchair tennis: a case study on the influence of the racket on the handrim forces

open access: yesMotriz: Revista de Educacao Fisica, 2020
Aims: to evaluate how the act of holding a tennis racket influences the application of forces in the handrim during manual wheelchair propulsion at a self-selected comfortable speed and sprint.
Vitor Alcolea   +3 more
doaj   +1 more source

Mechanical load differences between practice and match play in badminton

open access: yesInternational Journal of Racket Sports Science, 2023
Badminton is a demanding high-intensity intermittent sport, which has a high injury rate compared to other racket sports. The racket leg and lower back are particularly susceptible to injury due to the high mechanical loads experienced from repetitive ...
Steve Smith   +3 more
doaj   +1 more source

Single view silhouette fitting techniques for estimating tennis racket position [PDF]

open access: yes, 2017
Stereo camera systems have been used to track markers attached to a racket, allowing its position to be obtained in three-dimensional (3D) space. Typically, markers are manually selected on the image plane, but this can be time-consuming.
A Laurentini   +36 more
core   +1 more source

From Two‐Electron to Four‐Electron System: Electrolyte Regulation for Advanced Aqueous Zn–I2 Batteries

open access: yesCarbon Energy, EarlyView.
This review systematically summarizes recent progress in electrolyte‐regulated aqueous Zn–I2 batteries (AZIBs). It outlines the fundamentals of AZIBs along with their main challenges, and then analyzes electrolyte‐engineering strategies that improve both two‐ and four‐electron reactions.
Yucong Wang   +10 more
wiley   +1 more source

Esportes de raquete, divulgação e infraestrutura: influências sobre a prática

open access: yesCaderno de Educação Física e Esporte, 2019
Introdução: A prática dos esportes em Ouro Preto (MG) está centrada no “quarteto fantástico” que se caracterizam pelos esportes coletivos mais praticados deixando uma lacuna nas experiências motoras advindas de outras modalidades.
Mateus Augusto de Oliveira Machado   +2 more
doaj   +1 more source

Caught in the fire: An accidental ethnography of discomfort in researching sex work

open access: yesFeminist Anthropology, EarlyView.
Abstract Drawing on fifteen years of engagement with researching Israel's sex industry, this article uses accidental ethnography to propose discomfort‐as‐method for feminist anthropology. I argue that discomfort is not a by‐product of fieldwork but a constitutive condition that disciplines researchers and shapes what can be known.
Yeela Lahav‐Raz
wiley   +1 more source

Compilation of the model of professional competences among the coaches of racket games in Iraq

open access: yesدراسات وبحوث التربية الرياضية
The general purpose of this research was to develop a model of professional competencies in the coaches of racket games in Iraq. The present research method was qualitative; which was used to build the conceptual model of the research based on Strauss ...
Mustafa Tareq Fakhri, Farzam Farzan
doaj   +1 more source

Effect of environmental constraints on multi-segment coordination patterns during the tennis service in expert performers [PDF]

open access: yes, 2018
The aims of this study were to examine the effect of different environmental constraints on kinematic multi-segment coordination patterns during the service and its coordination with service time variability.
Barnes, Andrew   +3 more
core   +1 more source

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