Results 101 to 110 of about 467,101 (206)

The effects of COVID-19 on the Physical Activity and Recreational Screen Time among Chinese children and adolescents

Journal of Exercise Science & Fitness
Background/Objective: The lack of Physical Activity (PA) and prolonged Recreational Screen Time (RST) among children and adolescents has been exacerbated during the COVID-19 pandemic, causing this issue to escalate into a crucial public health concern ...
Ming Ming Guo, Koon Teck Koh, Xiao Zan Wang   +2 more
doaj   +1 more source

Physical activity and recreational screen time among Chinese children and adolescents: a national cross-sectional study

Frontiers in Public Health
BackgroundThe increasing prevalence of physical inactivity and prolonged Recreational Screen Time (RST) among children and adolescents is emerging as a significant public health concern. This study investigates the current status of Physical Activity (PA)
Mingming Guo, Yangming Zhu, Xiaozan Wang
doaj   +1 more source

Sequential All-Pay Auctions with Head Starts and Noisy Outputs [PDF]

We study a sequential (Stackelberg) all-pay auction with two contestants who are privately informed about a parameter (ability) that affects their cost of effort.
Aner Sela, Ella Segev
core  

The race for telecoms infrastructure investment with bypass: Can access regulation achieve the first best? [PDF]

We analyze the impact of mandatory access on the infrastructure investments of two competing communications networks, and show that for low (high) access charges ?rms wait (preempt each other).
Hoernig, Steffen, Vareda, João
core  

A 'bull and bear' model of interacting …financial markets. Part II: dynamics in three dimensions [PDF]

In the fi…rst part of our paper we proposed a three-dimensional nonlinear dynamic model of interacting stock and foreign exchange markets, jointly driven by the speculative activity of heterogeneous investors.
Fabio Tramontana, Frank Westerhoff, Laura Gardini, Roberto Dieci   +3 more
core  

Evaluation of repetitive stimulation test (RST) in 30 patients with Myasthenia Gravis, who were previously confirmed by clinical sign and tensilon test 1996-99

Acta Medica Iranica, 2001
est (RST) is the most commonly used electrodiagnostic test to asses the defect of neuromuscular transmission, which is reported to be positive in the diffuse and restricted ocular forms 60-95% and 14-50%, respectively.
"Ghabaee M, Ghaffarpour M "   +1 more
doaj  

Measuring Indirect Reciprocity: Whose Back Do We Scratch? [PDF]

This paper presents an experimental investigation of strong indirect reciprocity. We examine both generalized indirect reciprocity (if A helps B then B helps C) and social indirect reciprocity (if A helps B then C helps A), in a setting where reciprocal ...
Luca Stanca
core  

PLES KAO DOPUNSKO SREDSTVO U SPORTU

Sport Mont, 2007
In modern approach to a training process dancing is commonly used as a part of a training for development of rhythm sense, which is very important in almost any sport. Dance is also applied as a means of functional relaxation.
Biljana Karanov, Branka Protić-Gava
doaj  

The effect of repeated-sprint training on performance outcomes in youth athletes: a meta-analysis. [PDF]

PeerJ
Yan C, Shu L.
europepmc   +1 more source

The effects of field-based repeatedsprint training on physical performance in soccer players: a systematic review and multilevel meta-analysis. [PDF]

Front Physiol
Chen A, Zhuang M, Huang Z, Zhao L, Wang L.   +4 more
europepmc   +1 more source