The Aboriginal soccer tribe: A history of Aboriginal involvement with the world game     

Chris Hallinan 《Soccer & Society》2015,16(4):577-580

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Classification of Physical Activity Cut-Points and the Estimation of Energy Expenditure During Walking Using the GT3X+ Accelerometer in Overweight and Obese Adults     

Christopher C. F. Howe  Hannah J. Moir  Chris Easton 《Measurement in physical education and exercise science》2017,21(3):127-133

This study establishes tri-axial activity count (AC) cut-points for the GT3X+ accelerometer to classify physical activity intensity in overweight and obese adults. Further, we examined the accuracy of established and novel energy expenditure (EE) prediction equations based on AC and other metrics. Part 1: Twenty overweight or obese adults completed a 30 minute incremental treadmill walking protocol. Heart rate (HR), EE, and AC were measured using the GT3X+ accelerometer. Part 2: Ten overweight and obese adults conducted a self-paced external walk during which EE, AC, and HR were measured. Established equations (Freedson et al., 1998; Sasaki et al., 2011) overestimated EE by 40% and 31%, respectively (p < .01). Novel gender-specific prediction equations provided good estimates of EE during treadmill and outdoor walking (standard error of the estimate = .91 and .65, respectively). We propose new cut-points and prediction equations to estimate EE using the GT3X+ tri-axial accelerometer in overweight and obese adults.  相似文献   

Assessment of the risk and biomechanical consequences of lateral epicondylalgia by estimating wrist and finger muscle capacities in tennis players     

Laurent Vigouroux  Benjamin Goislard de Monsabert  Chris Hayot  Philippe Androuet  Éric Berton 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(4):434-451

Previous studies suggested that a pronounced weakness of the extensor muscles relative to the flexor muscles could increase the risk of occurrence of lateral epicondylalgia. This study investigates this hypothesis by estimating the ratio of extensor to flexor muscle capacities among healthy non-players (n = 10), healthy tennis players (n = 20), symptomatic players (n = 6), and players who have recovered from lateral epicondylalgia (n = 6). Maximum net joint moments in flexion or extension were measured during seven tasks involving the voluntary contraction of wrist and fingers. Using these data, the muscle capacities of the main muscle groups of the hand (wrist flexors, wrist extensors, finger flexors, finger extensors, and intrinsic muscles) were estimated using a musculoskeletal model. These capacities were then used to compute the extensor/flexor capacity ratios about the wrist and the finger joints. Compared to healthy non-players, healthy players presented higher extensor muscle capacities and greater capacity ratios showing that playing tennis generates specific adaptations of muscle capacities. Interestingly, symptomatic players, similar to those of non-players, showed more imbalanced ratios than healthy players. These results confirm that the ratio of extensor/flexor muscle capacities seems to be associated with lateral epicondylalgia and can be further used to understand its incidence and consequences.  相似文献   

Andrew Jackson,Southerner Mark R. Cheathem. Baton Rouge: Louisiana State University Press, 2013.          下载免费PDF全文

Chris Richardson 《Journal of American culture (Malden, Mass. : 2003)》2015,38(3):278-279

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A 12-week Interdisciplinary Intervention Program for Children who are Obese     

James W Farris  Laura Taylor  Megan Williamson  Chris Robinson 《Cardiopulmonary Physical Therapy Journal》2011,22(4):12-20

Childhood obesity is a growing problem, for which multi-disciplinary interventions are needed. Purpose: This interdisciplinary intervention program was designed to improve the health of children who were obese. Methods: Twenty-five children, mean age 8.1 (1.5) years; body mass index (BMI)> 98^th percentile, and their parents completed the 12-week (3 days/wk) intervention consisting of aerobic and resistance exercise appropriate to age and developmental levels. Baseline and posttest measures of blood values, fitness, and cardiovascular risk factors were performed. Data were analyzed using paired t-tests with significance accepted at P ≤ .05. Results: Significant differences between means (SD) for pre- and post-measurements were, respectively: BMI 30.31 (4.56), 27.80 (4.54), body-fat percent 43.7 (11.5), 40.7 (10.9), waist circumference 82.1 (7.1), 80.4(6.1) cm, calf circumference 34.2 (3.1), 35.2 (3.1) cm; step-test heart rate 137 (20), 126 (12) bpm, push-ups 1.0 (1.8), 5.6 (3.8), sit-ups 23.6 (12.7), 33.2 (13.8), sit-and-reach 35.1 (7.4), 41.2 (5.8) cm; systolic BP 102 (10), 108 (9) mmHg, glucose 4.9(0.3), 4.8 (0.4) mmol/L, total cholesterol 4.6 (1.0), 4.2 (0.8) mmol/L, ALT 41 (9), 35 (8) U/L, bilirubin 6.3 (2.4), 5.6 (2.1) μmol/L, and BUN 4.9 (1.1), 4.3 (0.9) mmol/L. Conclusions: This interdisciplinary intervention program positively affected the fitness and health status of children who were obese by involving the children and parents.Key Words: childhood obesity, cardiovascular risk factors, health, fitness  相似文献   

Test-retest reliability of a battery of field-based health-related fitness measures for adolescents   总被引：2，自引：2，他引：0  

Lubans DR  Morgan P  Callister R  Plotnikoff RC  Eather N  Riley N  Smith CJ 《Journal of sports sciences》2011,29(7):685-693

The main aim of this study was to determine the test-retest reliability of existing tests of health-related fitness. Participants (mean age 14.8 years, s?=?0.4) were 42 boys and 26 girls who completed the study assessments on two occasions separated by one week. The following tests were conducted: bioelectrical impedance analysis (BIA) to calculate percent body fat, leg dynamometer, 90° push-up, 7-stage sit-up, and wall squat tests. Intra-class correlation (ICC), paired samples t-tests, and typical error expressed as a coefficient of variation were calculated. The mean percent body fat intra-class correlation coefficient was similar for boys (ICC?=?0.95) and girls (ICC?=?0.93), but the mean coefficient of variation was considerably higher for boys than girls (22.2% vs. 12.2%). The boys' coefficients of variation for the tests of muscular fitness ranged from 9.0% for the leg dynamometer test to 26.5% for the timed wall squat test. The girls' coefficients of variation ranged from 17.1% for the sit-up test to 21.4% for the push-up test. Although the BIA machine produced reliable estimates of percent body fat, the tests of muscular fitness resulted in high systematic error, suggesting that these measures may require an extensive familiarization phase before the results can be considered reliable.  相似文献   

Truth and opinion in climate change discourse: the Gore-Hansen disagreement     

Russill C 《Public understanding of science (Bristol, England)》2011,20(6):796-809

In this paper, I discuss the "inconvenient truth" strategy of Al Gore. I argue that Gore's notion of truth upholds a conception of science and policy that narrows our understanding of climate change discourse. In one notable exchange, Gore and NASA scientist, James Hansen, disagreed about whether scientific statements based on Hansen's computer simulations were truth or opinion. This exchange is featured in An Inconvenient Truth, yet the disagreement is edited from the film and presented simply as an instance of Hansen speaking "inconvenient truth". In this article, I compare the filmic representation of Hansen's testimony with the congressional record. I place their exchange in a broader historical perspective on climate change disputation in order to discuss the implications of Gore's perspective on truth.  相似文献   

Special Schools, Inclusion and the World Wide Web—the emerging research agenda     

Chris Abbott  & Alan Cribb 《British journal of educational technology : journal of the Council for Educational Technology》2001,32(3):331-342

A comprehensive survey of UK special schools and Pupil Referral Units (PRUs) has shown that the rapid increase in Internet use on the part of mainstream schools has not been mirrored in special education. Despite this situation, interviews with IT coordinators and Headteachers in special schools and PRUs indicate some of the reasons for creation of special school WWW homepages. The interview data indicates concerns relating to issues of separation and inclusion that have been increased by recent moves towards inclusion as a goal within the special education sector.  相似文献   

Market Forces and Standards in Education: A preliminary consideration   总被引：1，自引：0，他引：1  

Stephen Gorard  Chris Taylor 《British Journal of Sociology of Education》2002,23(1):5-18

This paper considers the possible impact of market forces on educational attainment in secondary schools in England and Wales. One of the main arguments made by market advocates in favour of extending programmes of school choice was that this would drive up standards. However, despite 12 years of relevant experience in the UK, it remains very difficult to test this claim. This paper examines some practical difficulties before presenting three possible models for considering changes in educational standards over time. The results are inconclusive, possibly even contradictory. The measures, such as GCSE and A levels, extending back to 1988 and beyond, have clearly increased in prevalence. In terms of these measures, students from state-funded education have also reduced the 'gap' relative to those from fee-paying institutions. However, it is not clear that either of these developments is market related. In addition, there is no evidence yet that these improvements indicate any breakage in the strong link between the socio-economic background of students and their school outcomes.  相似文献   

Sex differences in the career development of urban African American adolescents     

Chris Brown Ph.D. 《Journal of Career Development》1997,23(4):295-304

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