An Examination and Validation of an Adapted Youth Experience Scale for University Sport     

Scott Rathwell  Bradley W. Young 《Measurement in physical education and exercise science》2016,20(4):208-219

Limited tools assess positive development through university sport. Such a tool was validated in this investigation using two independent samples of Canadian university athletes. In Study 1, 605 athletes completed 99 survey items drawn from the Youth Experience Scale (YES 2.0), and separate a priori measurement models were evaluated (i.e., 99 items, YES 2.0, YES for Sport [YES-S]). Confirmatory factor analysis (CFA) and exploratory structural equation modeling (ESEM) results indicated issues with model fit. Post-hoc modifications improved fit, resulting in a 46-item, 9-factor model with five positive and four negative dimensions. In Study 2, 511 athletes completed the same items. The resultant model was confirmed using both CFA (comparative fit index [CFI] = .911, standardized root mean square residual [SRMR] = .056, root mean square error of approximation [RMSEA] = .040) and ESEM (CFI = .956, SRMR = .023, RMSEA = .034). The resultant University Sport Experience Survey provides a reliable and factorially valid instrument for measuring development in university sport.  相似文献   

Accuracy of activPAL Self-Attachment Methods     

Nina L. Kringen  Genevieve N. Healy  Elisabeth A. H. Winkler 《Measurement in physical education and exercise science》2016,20(3):159-166

This study examined the accuracy of self-attachment of the activPAL activity monitor. A convenience sample of 50 participants self-attached the monitor after being presented with written material only (WMO) and then written and video (WV) instructions; and completed a questionnaire regarding the acceptability of the instructional methods. Participants positioned the monitor lower than the instructed position on the thigh (WMO ?5.15 ± 2.75 cm, WV ?4.16 ± 2.15 cm; p = .008 difference) and approximately 2 cm laterally from the thigh midline (WMO 1.90 ± 0.92 cm; WV 2.08 ± 1.24 cm). The orientation of the device was positioned correctly along the midline (within < 1° of vertical). Acceptability was high for both instructional methods although preference was shown for the WV instruction. In conclusion, participants consistently self-attached the activPAL close to the intended placement with either instructional method. The addition of video instruction produced a slightly more accurate attachment and was preferred by the participants.  相似文献   

Body composition of female road and track endurance cyclists: Normative values and typical changes     

Eric C. Haakonssen  Martin Barras  Louise M. Burke  David G. Jenkins  David T. Martin 《European Journal of Sport Science》2016,16(6):645-653

The aims of this study were to describe normative values and seasonal variation of body composition in female cyclists comparing female road and track endurance cyclists, and to validate the use of anthropometry to monitor lean mass changes. Anthropometric profiles (seven site skinfolds) were measured over 16 years from 126 female cyclists. Lean mass index (LMI) was calculated as body weight?×?skinfolds^?x. The exponent (x) was calculated as the slope of the natural logarithm of body weight and skinfolds. Percentage changes in LMI were compared to lean mass changes measured using dual-energy X-ray absorptiometry (DXA) in a subset of 25 road cyclists. Compared to sub-elite and elite cyclists, world class cyclists were (mean [95% CI]) 1.18?kg [0.46, 1.90] and 0.60?kg [0.05, 1.15] lighter and had skinfolds that were 7.4?mm [3.8, 11.0] and 4.6?mm [1.8, 7.4] lower, respectively. Body weight (0.41?kg [0.04, 0.77]) and skinfolds (4.0?mm [2.1, 6.0]) were higher in the off-season compared to the early-season. World class female road cyclists had lower body weight (6.04?kg [2.73, 9.35]) and skinfolds (11.5?mm [1.1, 21.9]) than track endurance cyclists. LMI (mean exponent 0.15 [0.13, 0.18]) explained 87% of the variance in DXA lean mass. In conclusion, higher performing female cyclists were lighter and leaner than their less successful peers, road cyclists were lighter and leaner than track endurance cyclists, and weight and skinfolds were lowest early in the season. LMI appears to be a reasonably valid tool for monitoring lean mass changes.  相似文献   

Lower limb alignment characteristics are not associated with running injuries in runners: Prospective cohort study     

Luiz Carlos Hespanhol Junior  Aline Carla Araújo de Carvalho  Leonardo Oliveira Pena Costa 《European Journal of Sport Science》2016,16(8):1137-1144

There is conflicting evidence on the association between lower limb alignment characteristics and the incidence of running-related injury (RRI). Therefore, the primary aim of this study was to investigate the association between lower limb alignment characteristics and the incidence proportion of RRI in a convenience sample of recreational runners. A total of 89 recreational runners were included in this prospective cohort study. These participants had been running for at least six months and were injury-free at baseline. Lower limb alignment measurements were conducted in order to calculate lower limb discrepancy, Q-angle, subtalar angle and plantar index. All participants also answered a baseline and biweekly online surveys about their running routine, history of RRI and newly developed RRI over a period of 12 weeks. The prevalence of previous RRI and the 12-week incidence proportion of new RRI were calculated. Logistic regression analysis was performed to estimate the association between lower limb length discrepancy, Q-angle, subtalar angle and plantar ach index with the incidence proportion of RRI. The prevalence of previous RRI was 55.1% (n?=?49). The 12-week incidence proportion of new RRI was 27.0% (n?=?24). Muscle injuries and tendinopathies were the main types of RRI identified. The lower leg and the knee were the main anatomical regions affected. We did not find significant associations between lower limb length discrepancy, Q-angle, subtalar angle and plantar arch index and injury occurrence.  相似文献   

电磁力测量试验台的设计   总被引：2，自引：0，他引：2  

边忠国 《实验技术与管理》2007,24(4):64-65,76

从试验台的结构特点和工作流程入手,介绍了其液压系统的工作原理及特点。实践证明:该系统设计合理、工作可靠、调节控制灵活方便。  相似文献   

用于超微弱发光研究的多通道光谱系统设计     

李博  刘华锋  鲍超 《鞍山师范学院学报》2001,3(1):80-82

光子计数成像采集系统是生物超微弱发光的光子计数研究的基本工具，通过自行设计的多通道光谱系统，扩展了现行的PIAS的测量功能，使之能对超微弱发光进行光谱测量，这在国内外均不多见．本对PIAS的工作原理和自行设计的多通道光谱系统都进行了说明，并给出了超微弱发光光子计数和光谱的测量结果．  相似文献   

工程承包投标的决策分析     

游学民 《襄樊职业技术学院学报》2004,3(2):88-89

利用决策树方法计算了在工程承包投标过程中各方案的期望值大小。并对投标风险进行了分析；利用回归分析分析了投标前投标费用的确定方法。  相似文献   

注册会计师职业判断的运用研究     

刘春雨 《商丘职业技术学院学报》2006,5(4):47-48

新会计制度的颁布实施,增大了会计处理的选择空间。会计人员运用专业理论知识和实践经验进行职业判断的内容也有所增加,从而必然对审计人员的专业判断能力提出更高的要求。注册会计师的职业判断尤为重要,它贯穿于审计工作的全过程,具有广泛的应用范围。  相似文献   

风险认知与决策领域的研究现状分析   总被引：1，自引：0，他引：1  

杨刘敏 《内江师范学院学报》2007,22(3):56-58

风险决策是指决策者在面临两个或两个以上不确定的决策后果,尤其是在面对伴有负面结果的可能性时,所产生的复杂心理过程.对个体风险知觉的探究主要包括风险认知与风险偏好两个方面.风险决策常常涉及多个不确定性的负面结果.因此,个体所知觉到的风险情景也不会是单一的,对动态决策模型的研究成为决策科学发展的一个重要方向.  相似文献   

试论CPA的验资风险及风险防范     

冯丽敏 《郧阳师范高等专科学校学报》2004,24(3):104-105

从产生验资风险的原因着手,分析验资风险的防范措施,使我们认识到只有严格执行验资程序,保持应有的职业谨慎,不断提高执业能力,充分防范验资风险,才能使我国的CPA事业走上健康的发展道路。  相似文献