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61.
D.Kathryn Weintraub 《Information processing & management》1982,18(3):163-164
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Relationship between laboratory-measured variables and heart rate during an ultra-endurance triathlon 总被引:1,自引:1,他引:0
Laursen PB Knez WL Shing CM Langill RH Rhodes EC Jenkins DG 《Journal of sports sciences》2005,23(10):1111-1120
The aim of the present study was to examine the relationship between the performance heart rate during an ultra-endurance triathlon and the heart rate corresponding to several demarcation points measured during laboratory-based progressive cycle ergometry and treadmill running. Less than one month before an ultra-endurance triathlon, 21 well-trained ultra-endurance triathletes (mean +/- s: age 35 +/- 6 years, height 1.77 +/- 0.05 m, mass 74.0 +/- 6.9 kg, = 4.75 +/- 0.42 l x min(-1)) performed progressive exercise tests of cycle ergometry and treadmill running for the determination of peak oxygen uptake (VO2peak), heart rate corresponding to the first and second ventilatory thresholds, as well as the heart rate deflection point. Portable telemetry units recorded heart rate at 60 s increments throughout the ultra-endurance triathlon. Heart rate during the cycle and run phases of the ultra-endurance triathlon (148 +/- 9 and 143 +/- 13 beats x min(-1) respectively) were significantly (P < 0.05) less than the second ventilatory thresholds (160 +/- 13 and 165 +/- 14 beats x min(-1) respectively) and heart rate deflection points (170 +/- 13 and 179 +/- 9 beats x min(-1) respectively). However, mean heart rate during the cycle and run phases of the ultra-endurance triathlon were significantly related to (r = 0.76 and 0.66; P < 0.01), and not significantly different from, the first ventilatory thresholds (146 +/- 12 and 148 +/- 15 beats x min(-1) respectively). Furthermore, the difference between heart rate during the cycle phase of the ultra-endurance triathlon and heart rate at the first ventilatory threshold was related to marathon run time (r = 0.61; P < 0.01) and overall ultra-endurance triathlon time (r = 0.45; P < 0.05). The results suggest that triathletes perform the cycle and run phases of the ultra-endurance triathlon at an exercise intensity near their first ventilatory threshold. 相似文献
65.
Shen B Reinhart-Lee T Janisse H Brogan K Danford C Jen KL 《Research quarterly for exercise and sport》2012,83(2):168-174
The purpose of this study was to describe the physical activity levels of urban inner city preschoolers while attending Head Start, the federally funded preschool program for children from low-income families. Participants were 158 African American children. Their physical activity during Head Start days was measured using programmed RT-3 accelerometers. Results revealed that the children spent the most time in sedentary and light physical activity, while their participation in moderate-to-vigorous physical activities was low. Given the sedentary class format and limited physical space for the Head Start programs observed, we suggest adding a structured physical activity component to Head Start schools to fight the overweight and obesity crisis. 相似文献
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OBJECTIVES: To describe the characteristics and repertoires of community practitioners serving families involved in child physical abuse that may inform training and treatment dissemination efforts. The aims are to: (a) describe the background characteristics of these clinicians; (b) document their most common intervention techniques; (c) examine clinicians' attitudes toward manualized treatment; and (d) understand the organizational climate of community agencies. METHOD: Practitioners from nine different agencies who have worked with cases in which there was child physical abuse (n=77) completed focus group discussions and three self-report questionnaires. Qualitative and quantitative analyses were conducted in tandem. RESULTS: Practitioners reported that they most often focused on family issues and employed family therapy techniques. Although treatment manuals were important, it was difficult to determine how practitioners used or would use these materials with families. An almost equal number of concerns and benefits were raised regarding using manuals in treatment. There was moderate agreement in how practitioners perceived their work environments. Age and attainment of a graduate degree were positively related to greater caring and job satisfaction, respectively, while length of time at a given agency was positively related to greater reports of emotional exhaustion on a measure of organizational climate. CONCLUSIONS: Given the promising benefits of evidence-based treatments for child abuse, it is important that researchers begin to form partnerships with community agencies that will lead to the dissemination and evaluation of effective treatment strategies. 相似文献
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Tai Peseta Margaret Hicks Trevor Holmes Catherine Manathunga Kathryn Sutherland Susan Wilcox 《International Journal for Academic Development》2013,18(1):59-61
Nurse education is characterised by dissonance, ambiguity and uncertainty. Such a context makes demands on the educator's authenticity or sense of self. This paper reports an attempt to provide a space where dissonance, ambiguity and uncertainty could be held, tolerated and examined and where authenticity could be recovered or developed through the practice of artistry. Three art workshops were offered to eight nurse educators over a period of three months. Each of the participants and the co‐facilitator were subsequently interviewed. All welcomed the opportunity to find meaning in their practice and to be listened to in a climate of empathy, acceptance and congruence. They undertook novel activities that allowed for discovery and surprise. They explored their sense of self and coined fresh metaphors to communicate their experiences. The paper argues that there is room for approaches to academic staff development that go against the mainstream. La formation des infirmières se caractérise par la dissonance, l'ambiguïté et l'incertitude. Un tel contexte exerce des pressions sur l'authenticité et le sens de soi d'un éducateur. Cet article rend compte d'une tentative de fournir un espace o[ugrave] l'authenticité peut être redécouverte et développée au moyen de la pratique artistique. Trois ateliers artistiques ont été offerts à huit formateurs d'infirmières sur une période de trois mois. Des entretiens ont été effectués auprès de chaque participant et du co‐facilitateur. Les répondants ont tous accueilli l'occasion de trouver un sens à leur pratique et de pouvoir être écouté dans un climat d'empathie, d'acceptation et d'harmonie. Ceux‐ci on entrepris des activités nouvelles faisant place à la découverte et à la surprise. Ils ont exploré leur sens de soi et ont trouvé de nouvelles métaphores pour communiquer leurs expériences. Cet article défend l'idée que des activités de développement pédagogique qui vont à l'encontre de la majorité ont leur place. 相似文献
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Ting Liu Kathryn Holmes James Albright 《International Journal of Inclusive Education》2013,17(9):994-1008
Recently China has been undergoing an unprecedented urbanisation process which has resulted in millions of rural families living in urban areas. As part of a study of Chinese migrant children's educational experiences, surveys and interviews were conducted with primary school teachers in a metropolitan city in East China. The objectives of this study were to describe teachers’ perceptions of migrant children's education in both migrant schools and in public schools, and to investigate differences in their beliefs between school types. Results found that urban teachers’ perceptions of educational inclusion of migrant students were slightly negative in general. However, teachers in public schools showed significantly more positive attitudes to inclusion of migrant students than migrant school teachers. In the light of these findings, the paper concludes with implications for practice and policy for education of migrant children in China. 相似文献
70.
Emotion is a growing focus for contemporary thinking about leadership in public policy and corporate arenas. In British education systems, three imperatives are evident: the idea that transformation is essential; leadership succession in crisis; and, more recently, that leaders must be able to run organisations that address the emotional well-being of staff and students. Viewed as a key outcome of schooling, its importance is mirrored in school leadership, especially professional development. This article considers whether this represents a step-change in leadership development praxis or is, instead, an invasive form of emotional engineering redolent of long-established orthodoxies of control and domination. If so, it is argued, leadership development as the advocacy of emotional acumen presents moral technology as a new form for intervening in leaders' emotional selves, thereby distracting them from addressing fundamental aspects of education for which they are primarily responsible. 相似文献