Performance differences when using 26- and 29-inch-wheel bikes in Swiss National Team cross-country mountain bikers     

Thomas Steiner  Beat Müller  Thomas Maier  Jon Peter Wehrlin 《Journal of sports sciences》2016,34(15):1438-1444

The purpose of this study was to analyse the effect of bike type – the 26-inch-wheel bike (26“ bike) and the 29-inch-wheel bike (29“ bike) – on performance in elite mountain bikers. Ten Swiss National Team athletes (seven males, three females) completed six trials with individual start on a simulated cross-country course with 35 min of active recovery between trials (three trials on a 26“ bike and three trials on a 29“ bike, alternate order, randomised start-bike). The course consisted of two separate sections expected to favour either the 29“ bike (section A) or the 26“ bike (section B). For each trial performance, power output, cadence and heart rate were recorded and athletes’ experiences were documented. Mean overall performance (time: 304 ± 27 s vs. 311 ± 29 s; P < 0.01) and performance in sections A (P < 0.001) and B (P < 0.05) were better when using the 29“ bike. No significant differences were observed for power output, cadence or heart rate. Athletes rated the 29“ bike as better for performance in general, passing obstacles and traction. The 29“ bike supports superior performance for elite mountain bikers, even on sections supposed to favour the 26“ bike.  相似文献   

Cuba’s Challenges Hosting the 1991 Pan-American Games and the Spectacle of the Revolution’s ‘Soft Power’     

Thomas F. Carter 《国际体育史杂志》2016,33(1-2):186-202

Abstract

This paper examines the confluence of global, regional, and national politics in the lead up to the 1991 Pan-American Games hosted by Cuba. Cuba’s contentious selection as host was wholly underpinned by the international politics of the time. Once selected, the preparations for the Games in Havana were surrounded by an unprecedented domestic economic crisis fueled by shifts in global politics. This paper analyzes how international politics informed the hosting of the 1991 Pan-American Games, and shaped the political challenge the Cuban government faced in hosting such an event. The Revolution’s use of sport domestically and internationally came to the forefront in its efforts as host and the results of those efforts proved to be providential given the emerging political economic contexts during and in the ensuing years after the Games.  相似文献   

Vouchers: Are they the answer?     

Thomas Villiger 《Early Childhood Education Journal》1979,7(1):11

  相似文献   

Book reviews     

Eva Hoogh  Alison Kelly  Dieter Kotte  Maren Naumann-Etienne  Maren Naumann-Etienne  Éva Szabolcs  R. Murray Thomas  Colin Titmus 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1985,31(1):245-260

  相似文献   

Creating learning environments conducive to change: The role of fear/safety in the adult learning process     

Thomas E. Sappington 《Innovative Higher Education》1984,9(1):19-29

This paper addresses the adult educator's responsibility to establish an emotionally safe learning environment. Such a climate enables students to address constructively the fears they bring to the learning event. This empowers the learner to risk change-the goal of adult education. The research of Maslow, Rogers, Knowles, and Freire supports an atmosphere of mutual respect as the key to adult learning. Trainers/Teachers of adults were interviewed to identify the kinds of fears that adults bring to the learning event. This paper explores the attitudes and techniques used by the facilitator to create an atmosphere of respect.  相似文献   

Parental and planning influences on the formation of student college choice sets     

Thomas A. Flint 《Research in higher education》1992,33(6):689-708

This study examines a model of college choice by parents on behalf of their eighth-grade children. A sample of 931 Illinois parents nominated 154 identifiable institutions in a 1986 survey. Multivariate multiple regression is used to predict preferred institutional characteristics, including selectivity, highest degree offering, proximity, enrollment, and tuition. Results indicate that socioeconomic, familial, and college planning characteristics explain 35 percent of the variance in selectivity of colleges in the choice sets, with lesser (but significant) percentages of explained variance for the other institutional characteristics. These parental college nominations parallel previously reported matriculation behaviors.  相似文献   

“Project Screen” — A Follow‐up Study of a Pre‐school Screening Battery     

Thomas R.V. Davies 《International Journal of Disability, Development & Education》1980,27(3):151-157

This study examines a pre‐school screening survey battery with an aim to validate it in terms of predicting school performance. Subjects participating in the screening were tested at the end of their first year at school. Analysis of the data, using a canonical correlation procedure, suggested elimination of a number of test items ‐‐ age, sex, age of walking, socio‐economic rating, Draw‐a‐Man Test, balance and posture, body image, perceptual motor match, height and weight. Measures of general ability, visual discrimination, visual reception, general development, receptive language, language concepts and positional concepts were the best predictors of school performance.  相似文献   

The issue of reinjury : An agency experience     

Thomas E. Taw 《Child abuse & neglect》1979,3(2):591-600

  相似文献   

Attitudes toward a programed text: “the analysis of behavior” compared with “a textbook of psychology”     

Thomas J. Banta 《Educational technology research and development : ETR & D》1963,11(6):227-240

  相似文献   

Predicting success in iscs level II     

Thomas E. McDuffie 《科学教学研究杂志》1979,16(1):39-44

  相似文献