Repositório Científico da UMAIA (Univ. da Maia)
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Classes de trajetórias de desenvolvimento do índice de massa corporal: diferenças na competência motora e aptidão física
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Twelve-week combined resistance and aerobic training confers greater benefits than aerobic training alone in nondialysis CKD
No full textThere is a growing consensus that patients with chronic kidney disease (CKD) should engage in regular exercise, but there is a lack of formal guidelines. In this report, we determined whether combined aerobic and resistance exercise would elicit superior physiological gains, in particular muscular strength, compared with aerobic training alone in nondialysis CKD. Nondialysis patients with CKD stages 3b-5 were randomly allocated to aerobic exercise {AE, n = 21; 9 men; median age 63 [interquartile range (IQR) 58-71] yr; median estimated glomerular filtration rate (eGFR) 24 (IQR 20-30) ml·min-1·1.73 m-2} or combined exercise [CE, n = 20, 9 men, median age 63 (IQR 51-69) yr, median eGFR 27 (IQR 22-32) ml·min-1·1.73 m-2], preceded by a 6-wk run-in control period. Patients then underwent 12 wk of supervised AE (treadmill, rowing, or cycling exercise) or CE training (as AE plus leg extension and leg press exercise) performed three times per week. Outcome assessments of knee extensor muscle strength, quadriceps muscle volume, exercise capacity, and central hemodynamics were performed at baseline, following the 6-wk control period, and at the end of the intervention. AE and CE resulted in significant increases in knee extensor strength of 16 ± 19% (mean ± SD; P = 0.001) and 48 ± 37% ( P < 0.001), respectively, which were greater after CE ( P = 0.02). AE and CE resulted in 5 ± 7% ( P = 0.04) and 9 ± 7% ( P < 0.001) increases in quadriceps volume, respectively ( P < 0.001), which were greater after CE ( P = 0.01). Both AE and CE increased distance walked in the incremental shuttle walk test [28 ± 44 m ( P = 0.01) and 32 ± 45 m ( P = 0.01), respectively]. In nondialysis CKD, the addition of resistance exercise to aerobic exercise confers greater increases in muscle mass and strength than aerobic exercise alone.info:eu-repo/semantics/publishedVersio
Associations of Quadriceps Torque Properties with Muscle Size, Attenuation, and Intramuscular Adipose Tissue in Older Adults
No full textAtrophy and fatty infiltration of muscle with aging are associated with fractures and falls, however, their direct associations with muscle function are not well described. It was hypothesized that participants with lower quadriceps muscle attenuation, area, and greater intramuscular adipose tissue (IMAT) will exhibit slower rates of torque development (RTD) and lower peak knee extension torques.info:eu-repo/semantics/publishedVersio
How can leadership and organizational culture predict innovation in small, medium and large enterprises?
No full texthis study intends to analyse the effects of leadership and organizational culture in innovation
in small, medium and large Portuguese enterprises. The sample is composed of 102
organizations (68.6% small, 24.5% medium-sized and 5.9% large companies), from which a
total of 854 workers answered to the Transformational Leadership Scale and the Organizational
Culture Questionnaire Denison. Additionally, a total of 102 top managers of each organization
answered a questionnaire concerning the innovation activity in their organization. Data analysis
was performed with structural equation modelling. The results showed that the size of the
company moderates the relationship between leadership and organizational culture in the
prediction of innovation. This moderation surpasses the differentiated effect size of leadership
in innovation predicted by culture, showing also influence on the contribution of the several
variables in the model.info:eu-repo/semantics/publishedVersio
O Esporte e a Nutrição
Get PDFA importância da nutrição no desempenho e saúde de atletas já se encontra suficientemente
documentada na literatura, contudo pouco interesse é destinado à investigação das razões que
levam às escolhas alimentares desses indivíduos. Sendo assim, o objetivo deste artigo é
descrever a relação atual entre o esporte e a nutrição, assim como discutir a prática alimentar
de atletas de diferentes modalidades esportivas frente às referências nutricionais. Os estudos
têm reafirmado a necessidade da reeducação nutricional em diferentes grupos de atletas.
Contudo, a percepção prática tem alertado para a compreensão de que o satisfatório atendimento
das demandas nutricionais de atletas requer a elaboração de um cuidadoso planejamento
alimentar, que inclua manipulações dietéticas adaptadas à sua modalidade esportiva e estilo de
vida.info:eu-repo/semantics/publishedVersio
Historic evolution and neuroanatomical changes in psychopathy: A comprehensive review
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The Use of Physical Activity Trackers in Portuguese Adolescents and Adults
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New version of the emotion socialization scale with the positive emotion of overjoy: initial validation evidence with Portuguese adolescents
Get PDFThere are few studies on parental socialization of positive emotions in adolescents and few instruments that measure these parental reactions. Therefore, we developed a new version of the Emotion Socialization Scale (ESS) for the positive emotion of overjoy. We further provided some evidence of validity and reliability of the Portuguese ESS, featuring overjoy, fear, anger, and sadness. Adolescents (N = 418) answered questionnaires on maternal emotion socialization and maternal rearing practices. Confirmatory factor analysis achieved good (reward, neglect, override, magnify) to acceptable (punish) levels of fit, and scales had good levels of internal consistency, except for punish (all emotions) and neglect (overjoy). Association with maternal rearing practices supported the adaptive role of reward and magnify and the less adaptive role of punish, override, neglect of positive emotion, with some exceptions. This investigation demonstrated the importance of assessing parents’ reactions to adolescents’ positive emotion as these may be important indicators of the parent-adolescent relationship quality.ISMAIinfo:eu-repo/semantics/publishedVersio
A exposição a riscos psicossociais: o caso concreto dos assistentes sociais
No full textOs riscos psicossociais têm sido uma temática em destaque nos últimos anos, no
entanto, com pouco foco nos assistentes sociais, que se confrontam com uma elevada carga
emocional. Com este estudo pretende-se perceber o grau de exposição dos assistentes sociais
a riscos psicossociais, bem como se estes riscos variam mediante as diferentes áreas de
intervenção.N/