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141.
The goal of the study was to investigate how teachers' reflection and feedback asking – two crucial components of professional development – can be explained by occupational self-efficacy, learning goal orientation and transformational leadership. A survey study with data from 456 teachers from a Dutch College for Vocational Education and Training shows that occupational self-efficacy and learning goal orientation are positively related to reflection and feedback asking. Furthermore, learning goal orientation mediates the relationships between occupational self-efficacy and reflection and asking feedback. Finally, the positive relationship between transformational leadership and reflection and asking feedback appears to depend on learning goal orientation. 相似文献
142.
Button C MacLeod M Sanders R Coleman S 《Research quarterly for exercise and sport》2003,74(3):257-269
The analysis of variability both within and between performers can reveal important information about how athletes satisfy situational constraints. Transitory changes in the basketball free-throw shot were examined across different stages in skill development. Six female basketball players were selected, representing a range of playing expertise (pretest: 0-90% baskets scored). Each participant was video recorded performing 30 shots. Contrary to predictions, there was not a clear pattern of a reduction in trajectory variability with increasing skill level. However, improvements in skill level were associated with an increasing amount of intertrial movement consistency from the elbow and wrist joints. It is suggested that the angular motions of the elbow and wrist joints were compensated for each other toward the end of each throw to adapt to subtle changes in release parameters of the ball. 相似文献
143.
Twitter is used by athletes, sporting teams and sports media to provide updates on the results of sporting events as they happen. Unlike traditional forms of sports media, online sports media offers the potential for diverse representations of athletes. The current study examined gender in social media coverage of the 2016 Olympic Games using a third wave feminist lens. The analysis focused on the Twitter pages of ‘Team GB’ and the ‘Australian Olympic team’ and the sports stories and images posted during the Rio Olympic Games. Despite a number of traditional differences in the ways that male and females were represented being present, such as the presence of ‘active’ images of male athletes accompanying sports stories and the presence of infantalization in the language used to represent female performers, this analysis demonstrated significant strides forward in terms of the quantity of coverage received by women in online spaces. It further highlights virtual platforms as dynamic spaces for the representation of women athletes. 相似文献
144.
Background: Retirement from professional sport has been recognised as a major psychological stressor, and there is a need to identify factors that increase the risk of mental health problems after career termination. The current study examined associations between career-ending injury, chronic pain, athletic identity, and depressive symptomology in retired professional footballers. Methods: A cross-sectional study was performed with 307 retired male footballers who had played within a professional United Kingdom league. Participants completed measures of depressive symptoms (Short Depression-Happiness Scale), chronic pain (Pain Intensity Numerical Rating Scale), and athletic identity (Athletic Identity Measurement Scale), and reported their reasons for retirement. Results: A total of 48 participants (16%) met the cut-off score for possible cases of clinically relevant depression. These participants were more recently retired, and had higher athletic identity than those without depressive symptoms. Former players with depressive symptoms were more likely to cite injury as a retirement reason, and report higher levels of ongoing injury-related pain. Multivariate logistic regression revealed that the presence of depressive symptoms was independently associated with retirement through injury (OR?=?3.44; 95% CI?=?1.39, 8.51), higher pain levels (OR?=?1.38; 95% CI?=?1.02, 1.86), and increased athletic identity (OR?=?1.28; 95% CI?=?1.14, 1.44). Conclusions: Career-ending injury is strongly associated with higher odds of depressive symptomology during retirement, while experiencing chronic pain, and maintaining a high sense of athletic identity, are additional potential contributors. 相似文献
145.
Respiratory muscle fatigue has been reported following short bouts of high-intensity exercise, and prolonged, moderate-intensity exercise, as evidenced by decrements in inspiratory and expiratory mouth pressures. However, links to functionally relevant outcomes such as breathing effort have been lacking. The present study examined dyspnoea and leg fatigue during a treadmill marathon in nine experienced runners. Maximal inspiratory and expiratory pressure, peak inspiratory and expiratory flow, forced vital capacity, and forced expiratory volume in one second were assessed before, immediately after, and four and 24 hours after a marathon. During the run, leg effort was rated higher than respiratory effort from 18 through 42 km (P < 0.05). Immediately after the marathon, there were significant decreases in maximal inspiratory pressure and peak inspiratory flow (from 118 +/- 20 cm H(2)O and 6.3 +/- 1.4 litres x s(-1) to 100 +/- 22 cm H(2)O and 4.9 +/- 1.5 litres x s(-1) respectively; P < 0.01), while expiratory function remained unchanged. Leg maximum voluntary contraction force was significantly lower post-marathon. Breathing effort correlated significantly with leg fatigue (r = 0.69), but not inspiratory muscle fatigue. Our results confirm that prolonged moderate-intensity exercise induces inspiratory muscle fatigue. Furthermore, they suggest that the relative intensity of inspiratory muscle work during exercise makes some contribution to leg fatigue. 相似文献
146.
Current methods of assessing coordination in Paralympic classification are non-instrumented and are based on ordinal scales of measurement and therefore impede the development of evidence-based methods of classification. This paper describes an instrumented battery of tests that measure impaired coordination in a way that will permit evidence-based classification. Test–retest reliability and normative values for each of the tests are reported. Twenty participants visited the laboratory on two occasions, each time completing 11 tests: three running-specific, lower-limb reciprocal tapping tests (yielding five outcome measures); four throwing-specific, upper-limb discrete tapping tests (yielding four outcome measures); and four wheelchair-specific, upper-limb reciprocal tapping tests yielding seven outcome measures. Reliability was evaluated using Intra-class Correlation Coefficients (ICCs), Standard Error of Measurement, Limits of Agreement and Paired t-tests. ICCs for fourteen of the 16 outcome measures were excellent (ICC ≥ 0.80), although systematic bias was evident in two of these—a unilateral, running-specific lower-limb tests on the non-dominant side, and a unilateral wheelchair-specific upper limb test on the dominant side. ICCs for two tests—a bilateral wheelchair-specific upper limb test (0.74), and a unilateral wheelchair-specific upper limb test on the non-dominant side (0.54)—were good and fair respectively. Results indicate that 12 of the measures evaluated have measurement properties that will facilitate the development of evidence-based methods of Paralympic classification in athletics. Positional adjustment and increased familiarization may improve reliability in the other four. Studies evaluating reliability of this test battery in people with coordination impairments are warranted. 相似文献
147.
148.
This article is an account of the decision by an independent school to participate in its local Healthy Schools Scheme. One of the factors that influenced this decision was the value the school gained from a pupil survey. The same survey was used to track the impact of the school's Personal, Social and Health Education curriculum and pastoral work on pupils' experience of the school, and academic achievement. In particular, the authors explore the role of survey analysis and consultancy advice in interpreting survey results and developing school practice. The survey contributed to pupil participation in school development. The use of an external consultant as critical friend was perceived as an aid to school reflection and self-review. 相似文献
149.
150.
Sanders R Gibson B Prassas S 《Sports biomechanics / International Society of Biomechanics in Sports》2002,1(2):193-212
The purpose of this study was to compare the reverse two and one half somersault dive in a tuck position (305C) performed by females (n = 24), and the reverse two and one half somersault dive in a pike position (305B) performed by males (n = 21), to determine changes required by females to successfully perform 305B. Key performance variables in reverse dives were also compared to those of forward dives. Video data of the dives performed at the 1999 FINA World Diving Cup were captured and digitised to obtain times and postures of the divers at specific events including hurdle landing, takeoff, and entry. Estimates of hurdle flight height and mass-normalised work done on the springboard were obtained from hurdle and flight times. The males did more work on the springboard to achieve greater height and rotation than females. Females performing 305C had less hip and knee flexion at hurdle landing than males performing 305B and took longer to achieve maximum hip flexion after takeoff from the springboard. To progress from 305C to 305B females need to adjust their techniques to put more energy into the system. Desirable changes include increased height in the hurdle and increased hip and knee flexion prior to hurdle landing. Comparison of results for reverse dives with data previously presented for forward dives indicated that divers are more limited in the number of somersaults and dive position in reverse dives than forward dives despite equivalent or better height in reverse dives than forward dives. 相似文献