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السجلات المعروضة 41 -- 50 من 55
Factors influencing teacher leadership: voices of public school teachers in Qatar
(
Taylor and Francis Group
, 2021 , Article)
This quantitative study used Teacher Leadership Inventory (TLI) to survey the views and perceptions of public (government-funded) school teachers on factors that influence teacher leadership in Qatar. The survey sample ...
Effects of covid-19 lockdown on physical activity, sedentary behavior, and satisfaction with life in Qatar: A preliminary study
(
MDPI
, 2021 , Article)
This study examined the effects of home confinement on physical activity (PA) and life satisfaction during the COVID-19 outbreak in Qatar. A total of 1144 subjects participated (male: n = 588; female: n = 556; age: 33.1 ± ...
The Effect of Experimental Recuperative and Appetitive Post-lunch Nap Opportunities, With or Without Caffeine, on Mood and Reaction Time in Highly Trained Athletes
(
Frontiers Media S.A.
, 2021 , Article)
Purpose: To investigate the effects of placebo (PLA), 20 min nap opportunity (N20), 5mg·kg−1 of caffeine (CAF), and their combination (CAF+N20) on sleepiness, mood and reaction-time after partial sleep deprivation (PSD; ...
Effects of plyometric and short sprint with change-of-direction training in male u17 soccer players
(
MDPI AG
, 2021 , Article)
This project investigated the effect of adding 8 weeks of bi-weekly plyometric and short sprint with change-of-direction (PSSCoD) training into standard training for elite youth soccer players from Tunisia. A training group ...
Can body fat percentage, body mass index, and specific field tests explain throwing ball velocity in team handball players?
(
MDPI
, 2021 , Article)
This study examined the physical fitness, anthropometry, and throwing velocity of normal weight and overweight male team handball players. Twenty-five players from the Qatar handball first professional league participated. ...
The effect of post-lunch napping on mood, reaction time, and antioxidant defense during repeated sprint exercice
(
Institute of Sport
, 2021 , Article)
To compare the effects of two nap opportunities (20 and 90 min) to countermeasure the transient naturally occurring increased sleepiness and decreased performances during the post-lunch dip (PLD). Fourteen highly trained ...
The effects of loaded plyometrics and short sprints in u19 male soccer players in Tunisia
(
MDPI AG
, 2021 , Article)
We investigated adding 8 weeks of bi-weekly loaded plyometric and short sprints (LPaSS) training into training for under 19 (U19) soccer players. An experimental group (EG, n = 18, age: 17.5 ± 0.58 years, body mass: 67.4 ...
Pharmacological hypotheses: Is acetaminophen selective in its cyclooxygenase inhibition?
(
Wiley-Blackwell
, 2021 , Article)
The precise mechanistic action of acetaminophen (ACT; paracetamol) remains debated. ACT’s analgesic and antipyretic actions are attributed to cyclooxygenase (COX) inhibition preventing prostaglandin (PG) synthesis. Two COX ...
The abbreviated science anxiety scale: Psychometric properties, gender differences and associations with test anxiety, general anxiety and science achievement
(
Public Library of Science
, 2021 , Article)
Science anxiety refers to students' negative emotions about learning science. Across two studies, we investigated the psychometric properties of the newly developed Abbreviated Science Anxiety Scale (ASAS), which was adapted ...
The Need to Develop an Individualized Intervention for Mathematics Anxiety
(
Frontiers Media S.A.
, 2021 , Article)
Mathematics anxiety is prevalent in many societies around the world, ranging from 30 to 70% (for a review, see Betz, 1978; Dowker et al., 2016). More than 30% of 15-year-old students across the Organization for Economic ...