Analysis of performance in orienteering with treadmill tests and physiological field tests using a differential global positioning system     

Larsson P  Burlin L  Jakobsson E  Henriksson-Larsén K 《Journal of sports sciences》2002,20(7):529-535

The aim of this study was to determine the physiological responses to orienteering by examining the interrelationships between the information provided by a differential global positioning system (dGPS) about an orienteer's route, speed and orienteering mistakes, portable metabolic gas analyser data during orienteering and data from incremental treadmill tests. Ten male orienteers completed a treadmill threshold test and a field test; the latter was performed on a 4.3 km course on mixed terrain with nine checkpoints. The anaerobic threshold, threshold of decompensated metabolic acidosis, respiratory exchange ratio, onset of blood lactate accumulation and peak oxygen uptake (VO2peak) were determined from the treadmill test. Time to complete the course, total distance covered, mean speed, distance and timing of orienteering mistakes, mean oxygen uptake, mean relative heart rate, mean respiratory exchange ratio and mean running economy were computed from the dGPS data and metabolic gas analyser data. Correlation analyses showed a relationship between a high anaerobic threshold and few orienteering mistakes (r = - 0.64, P < 0.05). A high threshold of decompensated metabolic acidosis and VO2peak were related to a fast overall time (r = -0.70 to -0.72, P < 0.05) and high running speed (r = 0.64 to 0.79, P < 0.05 and P < 0.01, respectively), and were thus the best predictors of performance.  相似文献   

University-Industry-Government Relations on the Periphery: The University of Campinas,Brazil     

Dagnino  Renato  Velho  Léa 《Minerva》1998,36(3):229-251

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Un inventaire des notions impliquées dans un enseignement général de mathématique à l'école secondaire     

Théo Bernet  André Delessert 《Educational Studies in Mathematics》1972,4(4):450-465

Sans résumé  相似文献   

Education in Africa—form dependency to self-sufficiency     

Ben Mady Cissé 《Prospects》1976,6(2):181-195

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On metrics matched to the discrete memoryless channel     

Gérald Séguin 《Journal of The Franklin Institute》1980,309(3):179-189

A sequence of metrics {D_N} is said to be additive and matched to a discrete memoryless channel (DMC) if D_N is the sum on its coordinates of N single letter metrics and if the maximum likelihood decoder for sequences of length N is a minimum D_N-distance decoder. Necessary and sufficient conditions on the transition probabilities of a DMC for the existence of a sequence of additive metrics matched to it are given. In the case of the binary channel these are shown to be equivalent to the channel being symmetric. Explicit transition probabilities are given for a large class of ternary DMCs with an associated sequence of additive matched metrics. The problem solved here may be considered a generalization of the problem of finding the DMCs matched to the Lee metric solved by Chiang and Wolf in 1971 (2).  相似文献   

Training administrators and educational administration requirements     

Alberto Gutiérrez Reñón 《Prospects》1977,7(1):73-81

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Understanding Leadership in Major Sporting Events: The Case of the 2005 World Aquatics Championships     

Milena M. Parent  Denise Olver  Benoit Séguin 《Sport Management Review》2009,12(3):167-184

The purpose of this paper was to begin understanding leadership within a major sporting event. A case study of the 2005 Fédération Internationale de Natation (FINA) World Aquatics Championships was built by means of interviews and archival material, using a multi-stakeholder perspective. Findings highlighted that core elements of upper-management level leadership in events were best described by the multiple-linkage leadership theory, which includes task commitment, ability and role clarity, work organization, cooperation and mutual trust, resources and support, and external coordination as the six intervening variables. While charismatic and transformational leadership styles surfaced as contributing to the overall success of an event, the multiple-linkage leadership theory offered a more comprehensive understanding of leadership in major sporting events from a multi-stakeholder perspective.  相似文献   

THE NEW FACE OF ‘UNIVERSITAS’     

E. R. de Arantes e Oliveira 《Higher Education in Europe》1985,10(3):25-30

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Self-management in Yugoslav universities     

Branko Pribiévić Ph.D.  Jovan Ghgorijević Ph.D. 《Prospects》1973,3(4):515-521

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Self-controlled feedback in 10-year-old children: higher feedback frequencies enhance learning     

Chiviacowsky S  Wulf G  de Medeiros FL  Kaefer A  Wally R 《Research quarterly for exercise and sport》2008,79(1):122-127

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