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Harry E. Routledge, Stuart Graham, Rocco Di Michele, Darren Burgess, Robert M. Erskine, Graeme L. Close and James P. Morton

The match activity profile data of Australian Football (AF) are well documented ( Coutts et al., 2010 ; Dawson et al., 2004 ; Wiseby et al., 2010 ) and are greater than those observed in other invasive field team sports, such as soccer and rugby league ( Varley et al., 2014 ). Given the high

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James M. Rhodes, Barry S. Mason, Thomas A.W. Paulson and Victoria L. Goosey-Tolfrey

affect activity profiles during competition, with greater distances covered and higher peak speeds reached in higher-classification players. Moreover, low-point players (≤1.5) spend more time at very low speeds yet perform more-frequent high-speed activities than high-point players (≥2.0). 3 Furthermore

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Billy T. Hulin, Tim J. Gabbett, Rich D. Johnston and David G. Jenkins

Wearable accelerometers, gyroscopes, and magnetometers (ie, microtechnology) are now commonly used to measure the activity profiles of field-based team-sport athletes. 1 , 2 Triaxial accelerometers measure the rate of acceleration across 3 anatomical planes: anteroposterior ( y -axis

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Paul S. Bradley and Jack D. Ade

. Int J Sports Med. 2009 ; 30 ( 3 ): 205 – 212 . PubMed doi:10.1055/s-0028-1105950 10.1055/s-0028-1105950 12. Vigne G , Gaudino C , Rogowski I , Alloatti G , Hautier C . Activity profile in elite Italian soccer team . Int J Sports Med. 2010 ; 31 ( 5 ): 304 – 310 . PubMed doi:10

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Nick B. Murray, Tim J. Gabbett and Andrew D. Townshend

use Global Positioning System (GPS) technology to provide information on the activity profiles of players during training and compeition. 3 – 5 With the physical demands of AF increasing, 6 it is critical that strength and conditioning staff prescribe an appropriate training stimulus to enhance the

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Liam Anderson, Graeme L. Close, Ryland Morgans, Catherine Hambly, John Roger Speakman, Barry Drust and James P. Morton

.1123/ijspp.6.4.509 22248551 2. Bradley PS , Di Mascio M , Peart D , Olsen P , Sheldon B . High-intensity activity profiles of elite soccer players at different performance levels . J Strength Cond Res . 2010 ; 24 : 2343 – 2351 . PubMed ID: 19918194 doi:10.1519/JSC.0b013e3181aeb1b3 19918194

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Matthew Pearce, David H. Saunders, Peter Allison and Anthony P. Turner

daily MVPA, producing a unique physical activity profile. The use of accelerometry does not record swimming and underestimates the contributions of movement during activities such as cycling, upper-body exercise, and load bearing, and this must be considered when viewing these results. The GPS receiver

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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

’ kicking impacts. Regarding the time–effort structure, it is debatable whether continuous-graded exercise tests reflect the true nature of the activity profiles experienced in intermittent sports. Consequently, discontinuous/intermittent fitness tests have been proposed. 7 , 8 Evidence is indeed emerging

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Matthew Ellis, Mark Noon, Tony Myers and Neil Clarke

Soccer has an intermittent activity profile and yields energy from aerobic and anaerobic pathways. 1 Caffeine is a popular ergogenic and can enhance intermittent, 2 endurance, 3 and resistance 4 performance. Caffeine nonselectively blocks both adenosine receptors and competitively inhibits the

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Stuart R. Graham, Stuart Cormack, Gaynor Parfitt and Roger Eston

casual indicator of overall match technical and tactical performance. However, recent work indicates that skill performance rather than increased MEI/min and physical-activity profiles is more important to coaches’ perceptions of performance. 21 The official commercial statistical provider (Champion