Lost in Thailand,A Satisfactory Movie or Not?     

Roger 《新高考》2013,(2):4

最近,由徐铮导演,王宝强、黄渤实力加盟的2013新年贺岁喜剧大片《人再囧途之泰囧》异常火爆.这部成本3100万元的电影目前票房收入已经突破11亿元,创下了中国内地国产电影票房新纪录.大家趁着新年的节日气氛纷纷涌人电影院观看,至于观影感受,在一片赞誉声中,也夹杂着不少不同的声音.  相似文献   

How Can We Improve Problem Solving in Undergraduate Biology? Applying Lessons from 30 Years of Physics Education Research     

A.-M. Hoskinson  M. D. Caballero  J. K. Knight 《CBE life sciences education》2013,12(2):153-161

If students are to successfully grapple with authentic, complex biological problems as scientists and citizens, they need practice solving such problems during their undergraduate years. Physics education researchers have investigated student problem solving for the past three decades. Although physics and biology problems differ in structure and content, the instructional purposes align closely: explaining patterns and processes in the natural world and making predictions about physical and biological systems. In this paper, we discuss how research-supported approaches developed by physics education researchers can be adopted by biologists to enhance student problem-solving skills. First, we compare the problems that biology students are typically asked to solve with authentic, complex problems. We then describe the development of research-validated physics curricula emphasizing process skills in problem solving. We show that solving authentic, complex biology problems requires many of the same skills that practicing physicists and biologists use in representing problems, seeking relationships, making predictions, and verifying or checking solutions. We assert that acquiring these skills can help biology students become competent problem solvers. Finally, we propose how biology scholars can apply lessons from physics education in their classrooms and inspire new studies in biology education research.  相似文献   

Understanding Clicker Discussions: Student Reasoning and the Impact of Instructional Cues     

Jennifer K. Knight  Sarah B. Wise  Katelyn M. Southard 《CBE life sciences education》2013,12(4):645-654

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Heart rate and perceived muscle pain responses to a functional walking test in McArdle disease     

John P. Buckley  Ros M. Quinlivan  Julius Sim  Roger G. Eston  Deborah S. Short 《Journal of sports sciences》2013,31(16):1561-1569

Abstract

The aim of this study was to assess a 12-min self-paced walking test in patients with McArdle disease. Twenty patients (44.7 ±11 years; 11 female) performed the walking test where walking speed, distance walked, heart rate (HR) and perceived muscle pain (Borg CR10 scale) were measured. Median (interquartile range) distance walked was 890 m (470–935). From 1 to 6 min, median walking speed decreased (from 75.0 to 71.4 m?min^–1) while muscle pain and %HR reserve increased (from 0.3 to 3.0 and 37% to 48%, respectively). From 7 to 12 min, walking speed increased to 74.2 m?min^–1, muscle pain decreased to 1.6 and %HR reserve remained between 45% and 48%. To make relative comparisons, HR and muscle pain were divided by walking speed and expressed as ratios. These ratios rose significantly between 1 and 6 min (HR:walking speed P = .001 and pain:walking speed P < .001) and similarly decreased between 6 and 11 min (P = .002 and P = .001, respectively). Peak ratios of HR:walking speed and pain:walking speed were inversely correlated to distance walked: r_s (HR) = ?.82 (P < .0001) and r_s (pain) = ?.55 (P = .012). Largest peak ratios were found in patients who walked < 650 m. A 12-min walking test can be used to assess exercise capacity and detect the second wind in McArdle disease.  相似文献   

Longitudinal monitoring of power output and heart rate profiles in elite cyclists     

Alfred Nimmerichter  Roger G. Eston  Norbert Bachl  Craig Williams 《Journal of sports sciences》2013,31(8):831-839

Abstract

Power output and heart rate were monitored for 11 months in one female ([Vdot]O_2max: 71.5 mL · kg^?1 · min^?1) and ten male ([Vdot]O_2max: 66.5 ± 7.1 mL · kg^?1 · min^?1) cyclists using SRM power-meters to quantify power output and heart rate distributions in an attempt to assess exercise intensity and to relate training variables to performance. In total, 1802 data sets were divided into workout categories according to training goals, and power output and heart rate intensity zones were calculated. The ratio of mean power output to respiratory compensation point power output was calculated as an intensity factor for each training session and for each interval during the training sessions. Variability of power output was calculated as a coefficient of variation. There was no difference in the distribution of power output and heart rate for the total season (P = 0.15). Significant differences were observed during high-intensity workouts (P < 0.001). Performance improvements across the season were related to low-cadence strength workouts (P < 0.05). The intensity factor for intervals was related to performance (P < 0.01). The variability in power output was inversely associated with performance (P < 0.01). Better performance by cyclists was characterized by lower variability in power output and higher exercise intensities during intervals.  相似文献   

Factors associated with minimal changes in countermovement jump performance throughout a competitive division I collegiate basketball season     

Gabriel J. Sanders  Brian Boos  Jessica Rhodes  Roger O. Kollock  Corey A. Peacock  Cory M. Scheadler 《Journal of sports sciences》2013,31(19):2236-2242

ABSTRACT

The purpose of the study was to assess factors that contribute to countermovement jump (CMJ) performance in women’s basketball athletes. Thirteen female athletes participated and were tested for maximal oxygen uptake (VO_2max) and heart rate (HR_max). Athletes were monitored, daily for a total of 21 weeks with heart rate-based wearable devices and CMJ performance and body weight were tested weekly after one day of recovery. 3-jump average height (CMJ_avg), maximum height jump (CMJ_max), and CMJ power (Watts) were calculated and recorded. Playing intensities >85% HR_max, HR_avg, HR_max and training load were averaged for three consecutive days prior to the recovery day. After the season, data was grouped as changes in CMJ power from week one: Large (≤ ?4.39% change), Moderate (?4.4% to ?0.62% change), and Minimal (≥ ?0.61% change) changes. Fixed-effects models revealed a main effect of group (p ≤ 0.05) for CMJ_avg, CMJ_max, VO_2max, weekly percent changes in body weight and for 3-day training load, HR_avg, and playing time at >85% HR_max. When athletes experienced minimal changes in CMJ performance, relative to large changes, they produced greater power, jumped higher, avoided negative changes in weekly body weight, had a greater preseason VO_2max and 3-day average workloads appeared to have an impact on CMJ performance  相似文献   

A Historical Reinterpretation of the Forces Underlying the First State Legislation for Physical Education in the Public Schools of the U.S.     

Robert Knight Barney 《Research quarterly for exercise and sport》2013,84(3):346-360

Abstract

During the twentieth century state legislative action has provided a broad base for the positive development of physical education programs in the nation's public schools. State legislation for physical education, extremely limited and often abortive in its infancy during the second half of the nineteenth century, has now reached almost avalanche-like proportions. Prior to the twentieth century few attempts were made by any of the United States to instrument governmental action on the subject of physical education — a subject which, even then, was becoming of increasing concern to educators and certain factions of the lay public. In an investigation of the country's first state laws for physical education, California emerges as the “founding father.” Further, three rather distinct factors underlying the state's pioneer efforts must be considered as having been instrumental in the evolutionary process. They are: (1) John Swett; (2) the early California Turners; and (3) Adele Parot. All three forces combined to lay a foundation and erect a framework for legislation leading to physical education in the nation's public schools.  相似文献   

Reliability of Archery Achievement     

Roger M. Zabik  Andrew S. Jackson 《Research quarterly for exercise and sport》2013,84(1):254-255

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The first joint BASES/BASEM Conference     

Roger Bartlett  Alan Nevill 《Journal of sports sciences》2013,31(3):235-236

The purpose of this study was to evaluate the dietary practices of soccer players of different ages. The diets of the members of four soccer teams (mean ages of 14.0, 15.0, 16.6 and 20.9 years, respectively) were examined. Our results show that the caloric intake per kilogram of body mass was significantly higher among the youngest players when compared with the adult players (P 相似文献