Comparison of physiological responses to graded exercise test performance in outrigger canoeing     

Rebecca M. Kerr  Warwick Spinks  Anthony S. Leicht  Wade Sinclair  Louise Woodside 《Journal of sports sciences》2013,31(7):743-749

Abstract

The aim of this study was to establish a graded exercise test protocol for determining the peak physiological responses of female outrigger canoeists. Seventeen trained female outrigger canoeists completed two outrigger ergometer graded exercise test protocols in random order: (1) 25 W power output for 2 min increasing by 7.5 W every minute until exhaustion; and (2) 25 W power output for 2 min increasing by 15 W every 2 min to exhaustion. Heart rate and power output were recorded every 15 s. Expired air was collected continuously and sampled for analysis at 15-s intervals, while blood lactate concentration was measured immediately after and 3, 5, and 7 min after exercise. The peak physiological and performance variables examined included peak oxygen uptake ([Vdot]O_2peak), minute ventilation, tidal volume, ventilatory thresholds 1 and 2, respiratory rate, respiratory exchange ratio, heart rate, blood lactate concentration, power output, performance time, and time to [Vdot]O_2peak. There were no significant differences in peak physiological responses, ventilatory thresholds or performance variables between the two graded exercise test protocols. Despite no significant differences between protocols, due to the large limits of agreement evident between protocols for the peak physiological responses, it is recommended that the same protocol be used for all comparison testing to minimize intra-individual variability of results.  相似文献   

Opening windows on teaching and learning: transformative and emancipatory learning precipitated by experimenting with visual documentation of student learning     

Candace Jaruszewicz 《Educational Action Research》2013,21(3):357-375

Emancipatory learning can occur through critical reflection grounded in theory. This study describes an action research project in which the author engaged in retrospective structured analysis of an incident involving visual documentation of student learning. It was experienced by a struggling novice teacher educator, who at the time of the incident had neither the theoretical nor structured framework from which to process the experience. Using the transformation theory of adult learning as the basis from which to create a reflection model, the action research examined assumptions about filters and meaning schemes through which insights emerged about a changed paradigm, with implications for other teacher educators about reflective practice.  相似文献   

Technical determinants of tackle and ruck performance in International rugby union     

Sharief Hendricks  Tiffany van Niekerk  Drew Wade Sin  Mike Lambert  Steve den Hollander  James Brown 《Journal of sports sciences》2018,36(5):522-528

The most frequently occurring contact events in rugby union are the tackle and ruck. The ability repeatedly to engage and win the tackle and ruck has been associated with team success. To win the tackle and ruck, players have to perform specific techniques. These techniques have not been studied at the highest level of rugby union. Therefore, the purpose of this study was to identify technical determinants of tackle and ruck performance at the highest level of rugby union. A total of 4479 tackle and 2914 ruck events were coded for the Six Nations and Championship competitions. Relative risk ratio (RR), the ratio of the probability of an outcome occurring when a characteristic was observed (versus the non-observed characteristic), was determined using multinomial logistic regression. Executing front-on tackles reduced the likelihood of offloads and tackle breaks in both competitions (Six Nations RR 3.0 Behind tackle, 95% confidence interval [95% CI]: 1.9–4.6, effect size [ES] = large, P < 0.001); Championship RR 2.9 Jersey tackle, 95% CI: 1.3–6.4, ES = moderate, P = 0.01). Fending during contact increased the chances of offloading and breaking the tackle in both competitions (Six Nations RR 4.5 Strong, 95% CI: 2.2–9.2, ES = large, P = P < 0.001; Championship RR 5.1 Moderate, 95% CI: 3.5–7.4, ES = large, P < 0.001). For the ruck, actively placing the ball increased the probability of maintaining possession (Six Nations RR 2.2, 95% CI: 1.1–4.3, ES = moderate, P = 0.03); Championship RR 4.0, 95% CI: 1.3–11.8, ES = large, P = 0.01). The techniques identified in this study should be incorporated and emphasised during training to prepare players for competition. Furthermore, these techniques need to be added to coaching manuals for the tackle and ruck.  相似文献   

Autonomic response to a short and long bout of high-intensity functional training     

Brian Kliszczewicz  Cassie Williamson  Emily Bechke  Michael McKenzie  Wade Hoffstetter 《Journal of sports sciences》2018,36(16):1872-1879

The evaluation of Autonomic Nervous System (ANS) recovery following exercise provides insight into the transient stress placed on the cardiovascular system. High-Intensity Functional Training (HIFT) is a form of intense exercise that is prescribed in various modalities and durations; however, little is known about the influence of HIFT duration on ANS recovery. Ten apparently healthy males (28.1 ± 5.4 yrs) performed two HIFT sessions (<5-minute and 15-minute) in a crossover fashion. ANS activity was measured using plasma Epinephrine (E) and Norepineprine (NE); Heart Rate Variability markers of the log transformed Root Mean Square of Successive Differences (lnRMSSD) and High-Frequency power (lnHF). No trial dependent differences were observed in lnRMSSD (p = 0.822), lnHF (p = 0.886), E (p = 0.078), or NE (p = 0.194). A significant main time effect was observed in both trials with a depression in lnRMSSD and lnHF following the trials (p < 0.05) and recovering by 2-hours post (p = 0.141, p > 0.999) respectively. A trial dependent increase in E and NE occurred immediately post (p < 0.05) and recovered by 1-hour post (p > 0.999, p > 0.999) respectively. The HIFT bouts examined within this study demonstrated similar transient strain of the ANS.  相似文献   

Reading and Comprehension: a longitudinal study of ex‐Reading Recovery students     

Maggie Moore  Barrie Wade 《Educational studies》1998,24(2):195-203

The paper reports the results of a longitudinal case study conducted in Australia and New Zealand. The study compares the reading and comprehension age of children in their fifth and sixth years in school. Reading and comprehension ages of 121 children who had Reading Recovery intervention at age 6 were compared with those of a Comparison group of 121 children, drawn from the same classes who, at age 6 years, had been better performers in literacy. Reading and comprehension assessment was conducted with the use of the Neale Analysis of Reading and analysed by means of a t‐test. Results show that the mean reading age of ex‐Reading Recovery children was nearly 12 months superior to that of the Comparison group and that the mean comprehension age was nearly 13 months superior at very highly significant levels. The results strongly suggest that Reading Recovery tuition at age 6 years enabled the 121 ex‐Reading Recovery children to make greater progress in literacy than children in the Comparison group.  相似文献   

Correspondence     

Sarat Roberts  Jenny Wade 《Health information and libraries journal》1988,5(2):93-93

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The 'Quiet' Child     

Barrie Wade  Maggie Moore 《English in Education》1984,18(3):25-32

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'Like Preparing for the Cup Final' The Ofsted Inspection of English at Bingley Community School (11–16)     

Bob Bibby  Barrie Wade 《English in Education》1995,29(2):21-31

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Internships in social science: An historical perspective and suggestions for the future     

Wade F. Hook  Paula Sweeney Fern 《Innovative Higher Education》1983,8(1):38-44

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Cultural considerations in teachers’ perceptions of student classroom behavior and achievement     

Kenneth M. Tyler  A. Wade Boykin  Tia R. Walton 《Teaching and Teacher Education》2006,22(8):998-1005

This study examines teachers’ perceptions of classroom motivation and achievement among students displaying culture-based classroom behaviors. Sixty-two elementary school teachers read scenarios of hypothetical students who behaviorally manifested themes purported to be consistent with a European/mainstream cultural ethos (competition, individualism) or Afrocultural ethos (communalism, verve). Teachers then rated students’ motivation and achievement as if they were in their classrooms. Motivation and achievement ratings were significantly higher for students displaying competitive and individualistic classroom behaviors than communal or vervistic behaviors. These findings suggest that the value teachers assign to academic success should not be understood in the absence of cultural considerations.  相似文献