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Achraf Ammar, Stephen J. Bailey, Omar Hammouda, Khaled Trabelsi, Nabil Merzigui, Kais El Abed, Tarak Driss, Anita Hökelmann, Fatma Ayadi, Hamdi Chtourou, Adnen Gharbi and Mouna Turki

bases of these potential surface-dependent effects on physical and technical components of football performance are poorly defined. Empirical research studies assessing physiological responses to exercise performed on AT compared with NG have yielded inconsistent findings. 3 Although higher blood

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Diogo V. Leal, Lee Taylor and John Hough

detect alterations in the exercise-induced responses of these hormones as a consequence of intensified training period. To be of value in practice, this running 55/80 variant protocol must demonstrate reproducible hormone and physiological responses when participants are in a rested healthy state. The

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Yusuf Köklü, Utku Alemdaroğlu, Hamit Cihan and Del P. Wong

-0838.2003.00353.x 10.1046/j.1600-0838.2003.00353.x 5. Köklü Y , A¸sçi A , Koçak FU , Alemdaroglu U , Dündar U . Comparison of the physiological responses to different small-sided games in elite young soccer players . J Strength Cond Res . 2011 ; 25 ( 6 ): 1522 – 1528 . doi:10.1519/JSC.0b013e3181e06

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Davide Ferioli, Diego Rucco, Ermanno Rampinini, Antonio La Torre, Marco M. Manfredi and Daniele Conte

enhance players’ passing skill, court vision, and players’ collaboration. 6 , 11 However, this rule modification might also simultaneously affect the physiological responses to GBD and the relative activity demands. Understanding the effect of dribbling limitation on these variables is fundamental to

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Heita Goto and James A. King

, Goncalves BS , Sampaio JE . Physiological responses and activity profiles of football small-sided games . J Strength Cond Res . 2013 ; 27 : 1287 – 94 . PubMed ID: 22820211 doi:10.1519/JSC.0b013e318267a35c 22820211 10.1519/JSC.0b013e318267a35c 2. Bradley PS , Carling C , Archer D , et

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Christopher Byrne and Jason K.W. Lee

, sensitivity to rest and recovery periods, and potential for real-time use. 3 By employing 2 physiological responses (ie, TC and HR) that can be measured simultaneously in the field, 6 – 8 the PSI offers utility as a heat strain monitoring tool for individuals performing in the natural environment. The

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Daisuke Kume, Akira Iguchi and Hiroshi Endoh

oxygenation profiles measured with NIRS provide valuable information for the understanding of physiological response in active muscles during exercise and their relationship with physical performance. The 20-m shuttle run test (20mSRT) is the most common field test for assessing aerobic fitness in many

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Erin L. McCleave, Katie M. Slattery, Rob Duffield, Philo U. Saunders, Avish P. Sharma, Stephen Crowcroft and Aaron J. Coutts

benefit. 2 However, the hypoxic dose supplied was reduced compared with previous LHTL studies reporting physiological and performance benefits in endurance athletes. 9 , 10 Therefore, the resulting physiological responses to combined heat training with LHTL hypoxia in endurance athletes requires further

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Matheus Hausen, Pedro Paulo Soares, Marcus Paulo Araujo, Débora Esteves, Hilbert Julio, Roberto Tauil, Marcus Junca, Flávia Porto, Emerson Franchini, Craig Alan Bridge and Jonas Gurgel

stage. A secondary aim was to compare the physiological responses to taekwondo-specific tests that incorporate continuous and intermittent stage increments. Methods Participants Twelve male taekwondo athletes (mean [SD], age: 20 [2] y; body mass: 67.5 [5.7] kg; height: 175 [8] cm; body fat percentage: 8

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Claire A. Molinari, Florent Palacin, Luc Poinsard and Véronique L. Billat

Hassmén 9 showed that runners were able to self-adjust their running intensity at 3 different RPE values, with an RPE of 11 (“light” on a 6–20 Borg scale) for 3 minutes, 13 (“somewhat hard”) for 11 minutes, and 15 (“hard”) for 5 minutes. However, effort duration has an effect on physiological responses