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1.
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
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This paper describes daily report cards and the evidence relating to their use in schools for children with attention‐deficit/hyperactivity disorder (ADHD). This intervention typically involves teachers evaluating a student's behaviour at school against pre‐determined targets and parents subsequently providing reinforcement at home for positive reports. Research suggests that the daily report card has been effective in treating a range of ADHD symptoms and improving school outcomes, including academic achievement in some cases. The daily report card also encourages collaboration between teachers and parents, and evidence suggests that the intervention benefits from the inclusion of reinforcement at home. Daily report cards are easy to implement and research finds that teachers consider them an acceptable intervention for ADHD. This paper also considers challenges in using daily report cards, including barriers to their use over the long‐term and the risk of stigma for children with a report card. Ideas to address these issues are suggested. 相似文献
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ABSTRACTAge-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
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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
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Charles A. J. Macaulay Pro Stergiou Darren Stefanyshyn Luciano Tomaghelli 《Journal of sports sciences》2017,35(23):2350-2356
Lacrosse requires the coordinated performance of many complex skills. One of these skills is shooting on the opponents’ net using one of three techniques: overhand, sidearm or underhand. The purpose of this study was to (i) determine which technique generated the highest ball velocity and greatest shot accuracy and (ii) identify kinematic and kinetic variables that contribute to a high velocity and high accuracy shot. Twelve elite male lacrosse players participated in this study. Kinematic data were sampled at 250 Hz, while two-dimensional force plates collected ground reaction force data (1000 Hz). Statistical analysis showed significantly greater ball velocity for the sidearm technique than overhand (P < 0.001) and underhand (P < 0.001) techniques. No statistical difference was found for shot accuracy (P > 0.05). Kinematic and kinetic variables were not significantly correlated to shot accuracy or velocity across all shot types; however, when analysed independently, the lead foot horizontal impulse showed a negative correlation with underhand ball velocity (P = 0.042). This study identifies the technique with the highest ball velocity, defines kinematic and kinetic predictors related to ball velocity and provides information to coaches and athletes concerned with improving lacrosse shot performance. 相似文献
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SarahJane Belton Johann Issartel Bronagh McGrane Danielle Powell Wesley O'Brien 《Irish Educational Studies》2019,38(2):193-211
The concept of physical literacy (PL) has been suggested as one that can offer a catalyst for a new emphasis in physical education (PE). In the broadest sense, a physically literate child is confident, active, and can maintain health enhancing physical activity (PA) for life. PL includes engagement in PA, physical competence, and PA motivation, confidence, knowledge and understanding. The purpose of this study is to investigate the levels of PL in Irish adolescents. As part of a larger study data were collected from 535 (12.78?±?.42 years) adolescents across 20 schools, to measure physical activity, physical competence, and psychological correlates of physical activity. Less than half of participants are accumulating the minimum of 60 minutes of PA daily required for health (49% males, 26% females). Data highlight that Irish youth are performing ‘below par’ across the domains of PL, with cardiovascular fitness (45% of males and 67% of females reaching ‘optimal’ target) and self-efficacy (53% of males and 46% of females reaching ‘optimal’ target) of greatest concern. Findings are discussed in the context of the need for a targeted direction in post-primary PE in Irish schools to increase levels of PL in Irish adolescents. 相似文献
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Robert W. Powell 《Learning & behavior》1974,2(3):185-188
Neither domesticated hooded rats nor wild black rats responded appreciably for water on a CRF schedule when free water was available. However, four out of five crows showed substantial responding for food in the presence of identical free food. Previous reports also indicate that type of reinforcer and species are variables which significantly influence this phenomenon. Nevertheless, the overall findings seem to be amenable to an explanation based upon incentive-motivation theory. 相似文献
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