Cerebral activity prior to motion task performance: an electroencephalographic study     

D Collins  G Powell  I Davies 《Journal of sports sciences》1991,9(3):313-324

Cerebral activity, as reflected by power in the alpha waveband (8-13 Hz), was examined prior to the performance of three tasks with different effort and accuracy requirements. The study aimed to further investigate changes in activity observed in an earlier study in which expert karate performers exhibited significant increases in alpha band power during preparation for a training task. In contrast to the earlier research, the high effort task produced a significant decrease in 'alpha' power prior to performance. 'Alpha' power prior to the high accuracy task showed significant differences mediated by the outcome. Successful performance was preceded by higher levels of 'alpha' power than unsuccessful attempts. The reported use of a cognitive strategy on the first task produced a significant difference in activity, lower alpha power being associated with the use of such a technique.  相似文献   

Going Wi-Fi in Canada: Municipal and community initiatives     

Alison Powell  Leslie Regan Shade   《Government Information Quarterly》2006,23(3-4):381

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Developing Pre-service Elementary Teachers’ Pedagogical Practices While Planning Using the Learning Cycle     

Danielle K. Ross  Jennifer L. Cartier 《Journal of Science Teacher Education》2015,26(6):573-591

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The coalition government 2010–2015: Lessons for future cultural policy     

Christopher Gordon  David Powell  Peter Stark 《Cultural Trends》2015,24(1):51-55

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Screening for risk of low energy availability in athletic and recreationally active females in Ireland     

Danielle M. Logue  Sharon M. Madigan  Mirjam Heinen  Sarah-Jane McDonnell  Eamonn Delahunt  Clare A. Corish 《European Journal of Sport Science》2019,19(1):112-122

ABSTRACT

Introduction: Low energy availability (LEA) results in physiological adaptations, which can contribute to unfavourable health outcomes. Little information exists on risk of LEA in active individuals competing in different sports or levels of competition. The aims of this study were to (1) identify risk of LEA in females competing at different levels of competition and (2) investigate associations between risk of LEA, illness and dietary habits. Methods: The validated questionnaire, ‘Low Energy Availability in Females Questionnaire’ was distributed online (November 2016–February 2017) to assess risk of LEA. Twenty-nine additional questions collected information on demographics, illness history and dietary habits. Participants were considered at risk of LEA if they attained a score of?≥?8 and were grouped into: (i) international; (ii) provincial/inter-county; (iii) competitive; and (iv) recreationally active. Chi-square and logistic regression analyses were used to explore differences between those at risk or not at risk of LEA. Results: Risk of LEA was identified in 40% (n?=?331) of 833 participants and was 1.7 and 1.8 times more likely in international and provincial/inter-county athletes compared to those who were recreationally active (International: odds ratios (OR) 1.68, 95% confidence intervals (95%CI) 1.12–2.54; Provincial/inter-county: OR 1.83, 95%CI 1.20–2.77). In participants at risk of LEA, missing >22 days of training during the previous year due to illness occurred 3 times more frequently (OR 3.01, 95%CI 1.81–5.02). Conclusion: Risk of LEA was widespread in this heterogeneous sample. Awareness of LEA and the development of appropriate energy management strategies to ensure athlete health across levels of competition are required.  相似文献   

The impact of Age-Tastic! On health literacy about depression among older adults: a pilot study     

Jacquelin Berman  Mebane Powell 《Educational gerontology》2020,46(3):117-128

ABSTRACT

Age-Tastic! is a health and wellness intervention designed for older adults. Incorporating game theory and behavioral activation concepts, this intervention is a board game that engages older adults in an interactive and immersive experience over 8 weeks. This paper reports on a pilot study that evaluated the impact of this intervention on health literacy about depression among community-dwelling older adults from New York City. The sample comprised 123 older adults recruited from 15 senior centers. Participants were tested on their knowledge and awareness of depression prior to the intervention and again at the end of the intervention after eight weeks. Statistically significant gains were made in the knowledge and awareness regarding the relationship of aging to depression, stigma of seeking help and knowing where to seek help. Implications for replication and use of this intervention are discussed.  相似文献   

The Development and Evaluation of the Intersectional Privilege Screening Inventory for Use With Counselors-in-Training     

Danielle A. Pester  A. Stephen Lenz  Joshua C. Watson 《Counselor Education & Supervision》2020,59(2):112-128

As counselor preparation programs are compelled to demonstrate student social and cultural competence, valid inventories are needed to measure development consistent with contemporary standards. The Intersectional Privilege Screening Inventory was created for this purpose, was assessed using 4 types of validity evidence, and has results supporting its use in student development.  相似文献   

The relationship between fundamental movement skill proficiency and physical self-confidence among adolescents     

Bronagh McGrane  Sarahjane Belton  Danielle Powell  Johann Issartel 《Journal of sports sciences》2017,35(17):1709-1714

This study aims to assess fundamental movement skill (FMS) proficiency, physical self-confidence levels, and the relationship between these variables and gender differences among adolescents. Three hundred and ninety five adolescents aged 13.78 years (SD = ±1.2) from 20 schools were involved in this study. The Test of Gross Motor Development-2nd Edition (TGMD), TGMD-2 and Victorian Skills Manual were used to assess 15 FMS. Participants’ physical self-confidence was also assessed using a valid skill-specific scale. A significant correlation was observed between FMS proficiency and physical self-confidence for females only (r = 0.305, P < 0.001). Males rated themselves as having significantly higher physical self-confidence levels than females (P = 0.001). Males scored significantly higher than females in FMS proficiency (P < 0.05), and the lowest physical self-confidence group were significantly less proficient at FMS than the medium (P < 0.001) and high physical self-confidence groups (P < 0.05). This information not only highlights those in need of assistance to develop their FMS but will also facilitate in the development of an intervention which aims to improve physical self-confidence and FMS proficiency.  相似文献   

Postpartum Mothers’ Leisure-Time Exercise Behavior is Linked to Positive Emotion During Partner Discussions     

Rachel L. Hutt  Ginger A. Moore  Micah A. Mammen  Danielle Symons Downs 《Research quarterly for exercise and sport》2017,88(4):447-454

Purpose: Marital dissatisfaction and conflict often increase for couples after the birth of a child and are evident in fewer positive family interactions and more negative family interactions. Because exercise is known to increase positive emotions and decrease negative emotions, the current study examined the extent to which higher levels of mothers’ exercise during the postpartum period were related to more positive and fewer negative emotion-expressive behaviors with their infants’ fathers. Method: Mothers’ (N = 46; M = 8 months postpartum) positive and negative expressive behaviors were coded during couples’ discussions of current conflict and positive family experiences. Mothers self-reported their leisure-time exercise behavior. Results: First-time mothers and mothers with higher levels of leisure-time exercise behavior displayed higher levels of positive expressive behaviors during couples’ discussions. Conclusions: Exercise may be associated with increased positive emotion and, in turn, can have great potential to improve family relationships during the postpartum period when marital stress normatively increases, particularly for mothers with more than 1 child. Future longitudinal studies are needed to understand exercise patterns across the postpartum period to identify the most effective timing and optimal level of exercise that lead to more positive expressive behaviors.  相似文献   

Perceived and experienced stigma among people living with HIV: Examining the role of prior stigmatization on reasons for and against future disclosures     

Danielle Catona  Kathryn Greene  Kate Magsamen-Conrad  Amanda Carpenter 《Journal of Applied Communication Research》2016,44(2):136-155

HIV remains a significant health concern entering the fourth decade of the epidemic [Centers for Disease Control and Prevention. 2014. HIV basics. Retrieved from http://www.cdc.gov/hiv/basics/index.html], and people living with HIV continue to grapple with stigma. This study uses Leary and Schreindorfer's [1998 Leary, M. R., &; Schreindorfer, L. S. (1998). The stigmatization of HIV and AIDS: Rubbing salt in the wound. In V. J. Derlega &; A. P. Barbee (Eds.), HIV and social interaction (pp. 12–29). Thousand Oaks, CA: Sage. [Google Scholar]. The stigmatization of HIV and AIDS: Rubbing salt in the wound. In V. J. Derlega &; A. P. Barbee (Eds.), HIV and social interaction (pp. 12 Lekas, H. M., Siegel, K., &; Schrimshaw, E. W. (2006). Continuities and discontinuities in the experiences of felt and enacted stigma among women with HIV/AIDS. Qualitative Health Research, 16, 1165–1190. doi:10.1177/1049732306292284[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]–29 Lekas, H. M., Siegel, K., &; Schrimshaw, E. W. (2006). Continuities and discontinuities in the experiences of felt and enacted stigma among women with HIV/AIDS. Qualitative Health Research, 16, 1165–1190. doi:10.1177/1049732306292284[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). Thousand Oaks, CA: Sage] conceptualization of stigma to explore prior stigmatization on reasons for and against future disclosures. We interviewed HIV+ individuals (N?=?59) and used a combination of deductive and inductive coding to analyze participants’ responses. Deductive codes consisted of four stigma characteristics (pose a threat to others’ health and safety, deviate from group standards, create negative emotional reactions in others, and failure to contribute), experiences of feeling stigmatized due to HIV status (yes or no), and the degree to which HIV stigma was a concern (major, minor, or no concern). Inductive coding identified examples of perceived and experienced stigma and stigma concerns on future disclosure decision-making. Practical implications discuss individual, institutional, and societal stigma-reduction interventions and programs.  相似文献