Trail running is defined by the International Trail Running Association “[ . . . ]a pedestrian race open to all, in a natural environment (mountain, desert, forest, plain . . . ) with minimal possible paved or asphalt road [ . . . ]” ( www.i-tra.org ). The racecourses can reach and exceed 200 km of
Nicola Giovanelli, Lea Biasutti, Desy Salvadego, Hailu K. Alemayehu, Bruno Grassi and Stefano Lazzer
Mohamed S. Fessi, Fayçal Farhat, Alexandre Dellal, James J. Malone and Wassim Moalla
Physical performance in elite soccer matches is characterized by high-intensity running in both linear and multiple directions, with recovery periods differing in nature and duration. 1 – 3 The most decisive actions in soccer are often preceded by changes of pace and occur after sprints
Heather K. Vincent, Laura A. Zdziarski, Kyle Fallgatter, Giorgio Negron, Cong Chen, Trevor Leavitt, MaryBeth Horodyski, Joseph G. Wasser and Kevin R. Vincent
. Among methods to carry fluids, handheld bottles or bottles carried in belt holders on the waist are common. Considerable efforts have been made to identify the optimal hydration protocols during ultralong running events. 4 – 7 However, there is a paucity of evidence on the impact of carrying water or
Michal Botek, Jakub Krejčí, Andrew J. McKune and Barbora Sládečková
These training-induced adaptations may potentially alter performance advantages of HRW supplementation in athletes with different abilities. Therefore, the primary aim of this study was to assess physiological, perceptual, and performance responses to an up-hill running race after administration of HRW
Peter J. Whalley, Chey G. Dearing and Carl D. Paton
effects. 14 To our knowledge, there is currently no published research comparing the effects of different caffeine delivery forms on exercise performance. Therefore, the primary aim of this study was to investigate the ergogenic effects of different forms of caffeine supplementation on 5-km running
Diogo V. Leal, Lee Taylor and John Hough
cyclists, its application within other athletes (eg, runners) is evidently lacking. Given a 30-minute running protocol at 80% of maximal oxygen uptake ( V ˙ O 2 max ) has been reported to elevate plasma cortisol by ∼20%, 10 and a running test to exhaustion at 100% ventilatory threshold increased plasma
John Molphy, John W. Dickinson, Neil J. Chester, Mike Loosemore and Gregory Whyte
ergogenic action of 2- and 4-mg inhaled terbutaline on exercise performance during a 3-km running time trial and to measure urinary thresholds of terbutaline postexercise performance. Methods Following ethical approval from the Liverpool John Moores University Research Ethics Committee (Ethics No. P11SPS044
Guillaume P. Ducrocq, Thomas J. Hureau, Olivier Meste and Grégory M. Blain
Exercise performance of many sport disciplines (eg, team sports, racquet sports, short and mid-distance running) requires both high endurance and muscle power output capabilities. 1 , 2 Usually, these specific physical capabilities are developed separately, but the increasing number of
Gareth N. Sandford, Sian V. Allen, Andrew E. Kilding, Angus Ross and Paul B. Laursen
Preparation for 800-m running represents a unique challenge to the middle-distance coach. With close interplay required between aerobic and anaerobic/neuromuscular physiology, athletes with distinctly different profiles have an opportunity for success in the event. Recently, a “changing of the
Dietmar Wallner, Helmut Simi, Gerhard Tschakert and Peter Hofmann
To analyze the acute physiological response to aerobic short-interval training (AESIT) at various high-intensity running speeds. A minor anaerobic glycolytic energy supply was aimed to mimic the characteristics of slow continuous runs.
Eight trained male runners (maximal oxygen uptake [VO2max] 55.5 ± 3.3 mL · kg−1 · min−1) performed an incremental treadmill exercise test (increments: 0.75 km · h−1 · min−1). Two lactate turn points (LTP1, LTP2) were determined. Subsequently, 3 randomly assigned AESIT sessions with high-intensity running-speed intervals were performed at speeds close to the speed (v) at VO2max (vVO2max) to create mean intensities of 50%, 55%, and 60% of vLTP1. AESIT sessions lasted 30 min and consisted of 10-s work phases, alternated by 20-s passive recovery phases.
To produce mean velocities of 50%, 55%, and 60% of vLTP1, running speeds were calculated as 18.6 ± 0.7 km/h (93.4% vVO2max), 20.2 ± 0.6 km/h (101.9% vVO2max), and 22.3 ± 0.7 km/h (111.0% vVO2max), which gave a mean blood lactate concentration (La) of 1.09 ± 0.31 mmol/L, 1.57 ± 0.52 mmol/L, and 2.09 ± 0.99 mmol/L, respectively. La at 50% of vLTP1 was not significantly different from La at vLTP1 (P = .8894). Mean VO2 was found at 54.0%, 58.5%, and 64.0% of VO2max, while at the end of the sessions VO2 rose to 71.1%, 80.4%, and 85.6% of VO2max, respectively.
The results showed that AESIT with 10-s work phases alternating with 20 s of passive rest and a running speed close to vVO2max gave a systemic aerobic metabolic profile similar to slow continuous runs.