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201.
Jeffrey M. McBride Judith A. Davis Jessica R. Alley Daniel P. Knorr Courtney L. Goodman James G. Snyder 《Journal of sports sciences》2015,33(13):1388-1395
The purpose of this investigation was to compare external work and net energy expenditure during a bout of repetitive stretch-shortening cycles between competitive and recreational long-distance runners. Participants were divided into either competitive or recreational runners based on their maximal oxygen consumption and self-reported 1600 m times. The stretch-shortening cycle involved a repetitive hopping protocol on a force plate while measuring oxygen consumption and lactate accumulation for a total of 10 min. External work and net energy expenditure were calculated for 3 min after steady state was achieved and the ratio between these variables was utilised as an index of mechanical efficiency. Lower extremity stiffness was calculated during this interval as well. Net energy expenditure was significantly lower in competitive runners (152.6 ± 33.3 kJ) in comparison to recreational runners (200.6 ± 41.4 kJ) (P = 0.02) given similar amounts of external work performed in both groups (competitive runners = 65.6 ± 20.1 kJ, recreational runners = 68.8 ± 12.1 kJ) (P = 0.67). Index of mechanical efficiency was significantly different between competitive runners (43.2 ± 9.0%) and recreational runners (34.8 ± 5.3%) (P = 0.03). No significant differences were found in lower extremity stiffness (P = 0.64). Competitive distance runners can perform similar levels of external work with lower net energy expenditure and thus a higher index of mechanical efficiency during repetitive stretch-shortening cycles in comparison to recreational runners with similar values of lower extremity stiffness. This ability could possibly be due differences in muscle–tendon length changes, muscle pre-activation, cross-bridge potentiation and short-latency reflex responses as a result of training which should be considered for future investigation. 相似文献
202.
Ernesto Panadero Gavin Brown Matthew Courtney 《Assessment in Education: Principles, Policy & Practice》2014,21(4):365-383
The study aimed to explore teachers’ beliefs about student self-assessment (SSA) and the reasons for their use of it in their classrooms. A representative sample of 944 Spanish teachers (38.8% primary school sector, 54.0% secondary school sector and 7.2% university or adult education sector) were surveyed about SSA. Data were analysed using confirmatory factor analysis and structural equation modelling to determine statistically and theoretically significant predictors of teachers’ self-reported use of SSA. Results showed that 90% of the teachers indicated having used SSA in their courses and 90% reported having positive experiences. A well-fitting structural model found five statistically significant predictors for the use of SSA: (1) positive experience with self-assessment, (2) belief in student participation in assessment, (3) willingness to include self-assessment as percentage of final grade, (4) self-assessment advantages and (5) having attended assessment courses. Statistically significant mean score differences for these factors were found according to level of employment and level of educational qualifications. In conclusion, teachers’ values, attitudes and prior experiences with this type of assessment contributed a significant proportion of self-reported SSA usage. 相似文献
203.
Annette Towler Kurt Kraiger Traci Sitzmann Courtney Van Overberghe Jaime Cruz Eyal Ronen David Stewart 《Performance Improvement Quarterly》2008,21(2):65-86
Seductive details are highly interesting information tangential to course objectives. The inclusion of seductive details generally harms performance on recall tests, but few studies have used multimedia training or investigated effects on performance on recognition tests or transfer tasks. We conducted two studies using computer‐based training, instructing college students to use either Excel or Word mail merge. Contrary to most prior results, we found no negative effect for seductive details on recognition tests, and we found a facilitative effect on transfer performance. We discuss implications for theories of learning and transfer, and practical implications for instructional design and delivery. 相似文献
204.
205.
Zarate Kary Barcus Courtney Lynn 《European Journal of Psychology of Education - EJPE》2023,38(3):1317-1340
European Journal of Psychology of Education - The professionalization of paraprofessionals through training is elemental in providing supports to students with disabilities. Through a systematic... 相似文献