نتایج جستجو برای: jumped runners

تعداد نتایج: 4860  

2013
J. Santos-Concejero C. Granados J. Irazusta I. Bidaurrazaga-Letona J. Zabala-Lili N. Tam S.M. Gil

The purpose of this study was to investigate the relationship between biomechanical variables and running economy in North African and European runners. Eight North African and 13 European male runners of the same athletic level ran 4-minute stages on a treadmill at varying set velocities. During the test, biomechanical variables such as ground contact time, swing time, stride length, stride fr...

Journal: :Journal of applied physiology 1999
A R Weston O Karamizrak A Smith T D Noakes K H Myburgh

Nine African and eight Caucasian 10-km runners resident at sea level volunteered. Maximal O2 consumption and peak treadmill velocity (PTV) were measured by using a progressive test, and fatigue resistance [time to fatigue (TTF)] was measured by using a newly developed high-intensity running test: 5 min at 72, 80, and 88% of individual PTV followed by 92% PTV to exhaustion. Skeletal muscle enzym...

Journal: :The Journal of orthopaedic and sports physical therapy 2013
Donald Lee Goss Michael T Gross

STUDY DESIGN Observational. OBJECTIVES To compare lower extremity negative joint work and vertical ground reaction force loading rates in rearfoot-striking (RS) and Chi runners. BACKGROUND Alternative running styles such as Chi running have become a popular alternative to RS running. Proponents assert that this running style reduces knee joint loading and ground reaction force loading rates...

2013
Eric K. O’Neal Christina R. Caufield Jordan B. Lowe Mary C. Stevenson Brett A. Davis Lauren K. Thigpen

This study examined 24-h post-run hydration status and sweat loss estimation accuracy in college age runners (men=12, women=8) after completing a 1-h self-paced outdoor run (wet bulb globe temperature=19.9±3.0 °C). Sweat losses (1353±422 mL; 1.9%±0.5% of body mass) were significantly greater (p<0.001) than perceived losses (686±586 mL). Cumulative fluid consumption equaled 3876±1133 mL (218±178...

2011
BEAT KNECHTLE PATRIZIA KNECHTLE THOMAS ROSEMANN

Knechtle B, Knechtle P, Rosemann T. No association of skin-fold thicknesses and training with race performance in male ultra-endurance runners in a 24-hour run. J. Hum. Sport Exerc. Vol. 6, No. 1, pp. 94100, 2011. In male high-level long-distance runners over 10,000 m, a positive association between both the front thigh and medial calf skin-fold thickness and running performance has been demons...

Journal: :BMC Musculoskeletal Disorders 2007
Ida Buist Steef W Bredeweg Koen APM Lemmink Gert-Jan Pepping Johannes Zwerver Willem van Mechelen Ron L Diercks

BACKGROUND Running is a popular form of recreational exercise. Beside the positive effects of running on health and fitness, the risk of a running related injury has to be considered. The incidence of injuries in runners is high and varies from 30-79%. However, few intervention studies on prevention of running related injuries have been performed and none of these studies involved novice runner...

2014
Martin Mooses Jaak Jürimäe Jarek Mäestu Priit Purge Kerli Mooses Toivo Jürimäe

The aim of the present study was to compare anthropometric, body composition and physiological parameters in middleand long-distance runners of the same performance level and to identify variables that could predict the probability of being either a middleor a long-distance runner. National-level middledistance (n=20, body mass M=70.5, SD=6.3 kg, body height M=1.80, SD=0.04 m,) and long-distanc...

Journal: :Journal of applied physiology 2004
Frank E Marino Mike I Lambert Timothy D Noakes

The purpose of this study was to examine the running performances and associated thermoregulatory responses of African and Caucasian runners in cool and warm conditions. On two separate occasions, 12 (n = 6 African, n = 6 Caucasian) well-trained men ran on a motorized treadmill at 70% of peak treadmill running velocity for 30 min followed by an 8-km self-paced performance run (PR) in cool (15 d...

Journal: :Journal of the International Society of Sports Nutrition 2008
Kristen E Gerlach Harold W Burton Joan M Dorn John J Leddy Peter J Horvath

BACKGROUND Our purpose was to determine the relationship between energy intake, energy availability, dietary fat and lower extremity injury in adult female runners. We hypothesized that runners who develop overuse running-related injuries have lower energy intakes, lower energy availability and lower fat intake compared to non-injured runners. METHODS Eighty-six female subjects, running a min...

Journal: :asian journal of sports medicine 0
said mohamed department of biological sciences applied in sports and physical education, institute of sports and physical education, jendouba university, el kef, ‎tunisia; department of biological sciences applied in sports and physical education, institute of sports and physical education, jendouba university, el kef, ‎tunisia. tel: +216-93831445, fax: +216-72272033 ncir lamya department of biological sciences applied in sports and physical education, institute of sports and physical education, jendouba university, el kef, ‎tunisia mansour hamda department of biological sciences applied in sports and physical education, institute of sports and physical education, mannouba university, ksar-said, tunisia

conclusions maximal and supra-maximal races induce a significant increase in lipid peroxidation and cause non-negligible inflammation and muscle damage. these effects were relatively related to the physical exercise type and the sportive specialty. results a significant increase in malondialdehyde (mda) concentrations was observed in ss and mdr after the vameval test and in ldr after the limite...

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