Iskanje po repozitoriju

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Ključne besede: obalna območja, ekosistemske storitve, plačila, čezmejno sodelovanje, Natura 2000
Objavljeno v DiRROS: 20.07.2022; Ogledov: 585; Prenosov: 358
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Povzetek: This article aimed to investigate the effects of menstrual cycle phases on perceptual responses in athletes by means of systematic review and meta-analysis. The search was conducted in the PubMed, Web of Science, and Sport Discus databases considering articles with two or more menstrual phases for comparison. The PECO criteria were used for the keywords “menstrual cycle,” “athletes,” and “perceptual responses” with their respective entry terms. Of 1.165 records identified, 14 articles were available for the final evaluation, while eight articles were eligible for a meta-analysis. The perceptual responses evaluated in the studies were: motivation, competitiveness, sleep quality, stress, muscle soreness, fatigue, perceived effort, mood, menstrual symptoms, perceived endurance, and readiness. The meta-analysis was conducted for perceived effort only. The results showed that the level of perceived exertion does not differ two phases of the menstrual cycle (MD = 3.03, Q = 1.58, df = 1, p = 0.209), whereas RPE was 19.81 ± 0.05 and 16.27 ± 0.53 at day 1–5 and day 19–24, respectively. Two studies found statistically significant changes in motivation and competitiveness during the cycle, with better outcomes in ovulatory phase compared to follicular and luteal. One study found an increase in mood disturbance in the pre-menstrual phase (vs. mid-cycle); one decreased vigor in the menstrual phase (vs. luteal); one increased the menstrual symptoms in the follicular phase (vs. ovulation), and one study reported increased fatigue and decreased sleep quality on luteal phase (vs. follicular). The remaining studies and variables were not affected by the menstrual cycle phase. Based on the results from the studies selected, some perceptual responses are affected in different menstrual cycle phases. A “favorable” subjective response in athletes was noticed when the ovarian hormones present an increase in concentration levels compared to phases with lower concentration. Different perceptual variables and methodological approaches limit the generalization of the conclusion.
Ključne besede: athletes, female, behavior, menstrual cycle, hormones, perceptual responses
Objavljeno v DiRROS: 19.07.2022; Ogledov: 460; Prenosov: 393
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Povzetek: Several factors that follow the development of society affect physical inactivity, which primarily includes the development of technology and digitalization and the increasing choice of unhealthy lifestyle habits. However, certain shifts in the fitness industry have been noted in the last decade. The development of wearable technologies and artificial intelligence is one of the leading fitness trends and undoubtedly represents the future of the fitness industry. On the other hand, the significant influence of social media and networks affects the development and attitudes of people related to physical activity. Therefore, this review paper evaluates the advantages and disadvantages of wearable technologies and artificial intelligence, the positive and negative effects of social networks, and points out the problems accompanying these new fitness trends. The development of fitness trends follows humanity’s needs, and one of the biggest challenges is incorporating these novelties in a mission to improve physical activity levels worldwide.
Ključne besede: modern technologies, social media, social networking platform, physical activity, wearable technologies
Objavljeno v DiRROS: 13.07.2022; Ogledov: 537; Prenosov: 433
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Povzetek: E-priročnik pripravljen v sklopu projekta ECO-SMART, program sodelovanja Interreg Italija - Slovenija, je namenjen učiteljem osnovne in srednje šole ter na splošno izobraževalcem, ki se ukvarjajo s področjem vzgoje in izobraževanja o trajnostnem razvoju in opolnomočenja z znanjem in kompetencami na področju podnebnih sprememb. Priročnik za učitelje je bil zasnovan s ciljem, da je učiteljem v podporo pri razlaganju vsebin, kot so ekosistemske storitve in biotska raznovrstnost obalnih območij Natura 2000, vplivi podnebnih sprememb na ta območja ter na ekosistemih temelječi ukrepi prilagajanja na podnebne spremembe. Podaja informacije o predlaganih učnih vsebinah, ciljih in pričakovanih rezultatih ter pristopih poučevanja. S tem učitelje usmerja k vključevanju teh vsebin v učne načrte na interdisciplinaren in celosten način. Priročnik se smiselno dopolnjuje z izobraževalnimi vsebinami, ki so prisotne na spletnem izobraževalnem portalu projekta (www.eco-smart.si), s tem pa omogoča lažjo in hitrejšo uporabo teh vsebin (igre, kvizi, sestavljanke, video posnetki).
Objavljeno v DiRROS: 12.07.2022; Ogledov: 653; Prenosov: 324
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Povzetek: Simple Summary: Irisin is a known myokine secreted mainly by the muscle that is produced after physical activity. It induces browning in the adipose tissue with a consequent increase in mitochondrial oxidation of lipids and reduction of insulin resistance; thus, it has been hypothesized that irisin was the molecule mediating most of the beneficial effects related to exercise on adipose tissue and consequently on the whole organism. In our study we observed that extreme physical inactivity induces the loss of muscle mass and function, and an increase in the body adipose tissue as expected. However, of note, circulating irisin levels were increased secondary to enhanced irisin synthesis mainly from adipose tissue rather than muscle. In addition, subjects who produced more irisin had reduced muscle impairment. Therefore, our hypothesis is that there is negative feedback within the muscle-adipose tissue crosstalk, specifically not only does the muscle influence the adipose tissue through irisin during exercise, but also the adipose tissue protects the muscle during inactivity.Abstract: The detrimental effect of physical inactivity on muscle characteristics are well known. Irisin, an exercise-induced myokine cleaved from membrane protein fibronectin type III domain-containing protein-5 (FNDC5), mediates at least partially the metabolic benefits of exercise. This study aimed to assess the interplay between prolonged inactivity, circulating irisin, muscle performance, muscle fibers characteristics, as well as the FNDC5 gene expression (FNDC5ge) in muscle and adipose tissue among healthy subjects. Twenty-three healthy volunteers were tested before and after 14 days of Bed Rest, (BR). Post-BR circulating levels of irisin significantly increased, whereas body composition, muscle performance, and muscle fiber characteristics deteriorated. Among the subjects achieving the highest post-BR increase of irisin, the lowest reduction in maximal voluntary contraction and specific force of Fiber Slow/1, the highest increase of FNDC5ge in adipose tissue, and no variation of FNDC5ge in skeletal muscle were recorded. Subjects who had the highest FNDC5ge in adipose tissue but not in muscle tissue showed the highest circulating irisin levels and could better withstand the harmful effect of BR.
Ključne besede: physical inactivity, bed rest, FNDC5 gene expression, myokines, sarcopenia, muscles fiber
Objavljeno v DiRROS: 07.07.2022; Ogledov: 730; Prenosov: 399
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