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Background: The enjoyment represents children as crucial factor to maintain positive engagement in physical activity. Unfortunately, enjoyment decreases with age and undergoes the physical perceived competence that, in turn, is affected by the anthropometric characteristics. The aim of this study was to evaluate the enjoyment during physical education lessons, even though the anthropometric characteristics affects the performance and in consequence the self-perceived physical competence.
Methods: A total of 1999 children (girls =998; boys=1001) were interviewed with Physical Activity Enjoyment Scale (PACES) and International Fitness Scale (IFIS) questionnaires. The scores were matched with BMI to evaluate the relationships with anthropometric characteristics. No parametric analysis of variance was used to define the categorical differences within the score of the two questionnaires according to BMI and age.
Results: The PACES questionnaire revealed a general score of 50.96 with the highest mean value for the item n.1 ("I enjoy it"). This questionnaire confirmed a significant decrease with age (cut-off eight years) while no differences were found within sex and BMI categories. The IFIS showed a decrease from 8 to 11 years (male and female) and significant differences were found within BMI categories.
Conclusions: Our results suggested that attention should be paid to improve enjoyment during physical education lessons since the age of eight years in order to improve the positive perceptions of physical competence and then the reinforcement for enjoyment that in turn improve the positive attitude for physical activity.
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http://dx.doi.org/10.23736/S0022-4707.20.10550-4 | DOI Listing |
J Am Chem Soc
December 2024
College of Materials, Institute of Artificial Intelligence, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China.
Nickel-iron-based catalysts are recognized for their high efficiency in the oxygen evolution reaction (OER) under alkaline conditions, yet the underlying mechanisms that drive their superior performance remain unclear. Herein, we revealed the molecular OER mechanism and the structure-intermediate-performance relationship of OER on a phosphorus-doped nickel-iron nanocatalyst (NiFeP). NiFeP exhibited exceptional activity and stability with an overpotential of only 210 mV at 10 mA cm in 1 M KOH and a cell voltage of 1.
View Article and Find Full Text PDFExp Physiol
December 2024
School of Health Sciences, Massey University, Wellington, New Zealand.
Dynamic resistance exercise (RE) produces sinusoidal fluctuations in blood pressure, with hypotension and cerebral hypoperfusion commonly observed immediately following RE. Whether the cerebral vasculature adapts to these regular blood pressure challenges is unclear. This study examined the cerebrovascular response to post-dynamic RE orthostasis.
View Article and Find Full Text PDFExp Physiol
December 2024
Exercise Biological Center, China Institute of Sport Science, Beijing, China.
The impact of housing temperature on exercise-induced metabolic adaptations is not well understood, despite extensive research on the benefits of exercise for metabolic health. The aim of this study was to elucidate how housing temperatures influence the molecular responses and metabolic benefits of exercise in mice. Male C57BL/6N mice were housed at either room temperature (RT, 21°C) or in a thermoneutral environment (TN, 29°C) and subjected to either a 6-week or acute exercise regimen.
View Article and Find Full Text PDFNano Lett
December 2024
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
Developing highly efficient non-iridium-based active sites for acidic water splitting is still a huge challenge. Herein, unique Ru-B-Cr moieties have been constructed in RuO nanofibers (NFs) to activate Ru sites for water electrolysis, which overcomes the bottleneck of RuO-based catalysts usually possessing low activity for the hydrogen evolution reaction (HER) and poor stability for the oxygen evolution reaction (OER). The fabricated Cr, B-doped RuO NFs exhibit low overpotentials of 205 and 379 mV for acidic HER and OER at 1 A cm with outstanding stability lasting 1000 and 188 h, respectively.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
Cobalt is recognized as an active catalyst in ethane dehydroaromatization (EDA) reactions due to its efficient ethane cracking capability. In order to optimize cobalt's strong ethane cracking capability, it was loaded onto HZSM-5 zeolite through impregnation. This study was conducted with Co-loaded HZSM-5 catalysts with an incipient wetness impregnation method and witnessed an increase of catalytic activity with a long induction period.
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