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Association Football
Intermittent high-intensity exercise
Repeated sprint ability test
Youth sport
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Mukherjee, S., & Chia, M. (2013). The NIE intermittent high-intensity running test: A reliable and valid test for assessment of soccer-specific fitness. International Journal of Sports Science & Coaching, 8(1), 77-88.
The overall activity pattern of soccer is that of intermittent high-intensity
(Int-HINT) type and elite players have a greater repeated high-intensity
running capability. Since soccer involves rapidly changing work intensities in
an unpredictable manner, tests simulating overall activity pattern in a
cyclical sequence have limited practical usefulness in testing of soccer
fitness. The primary aim of this study was to develop a laboratory-based
protocol to specifically assess the Int-HINT running capability in soccer
University team games athletes (n=8, Mean ± SD; age 22.30 ± 1.65
years, stature 1.73 ± 0.04 m, body mass 69.36 ± 6.04 kg) participated in the
reliability study and male youth professional soccer players (n=20, Mean ±
SD age, 17.5 ± 0.3 yrs; stature, 1.73 ± 0.04 m; body mass, 67.2 ± 7.5 kg)
participated in the validity study. The players performed on the NIE
Intermittent High-intensity (NIE Int-HINT) Running Test during the preseason,
early in-season and end mid-season phases of the soccer season.
Performance was measured as total distance covered on the treadmill.
The participants also performed the YoYo Intermittent Recovery Test Level
2 (YoYo IRT L2) during each phase of the competition season.
The NIE Int-HINT test was found to be of high reliability (ICC, 0.98; CV,
2.1%; ratio limits of agreement (rLOA) 0.99 ×/÷ 1.03). A positive and
significant correlation (p< 0.05) was found between the performance in the
NIE Int-HINT test and the YoYo IRT L2 performance (r = 0.68-0.77) during
different phases of the soccer season.
The NIE Int-HINT test provided a reliable measure of intermittent highintensity
running capability and a valid and sensitive method of estimating
soccer-specific fitness in youth professional soccer players. Further studies
are needed to evaluate the applicability of this test in adult elite soccer
players and other intermittent team game athletes.
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