The Yo-yo intermittent recovery test: physiological response, reliability, and validity
Article Abstract:
Research indicates that the yo-yo intermittent recovery test, used to evaluate fitness of athletes in intermittent sports, is sensitive and reproducible. It is particularly suited to measure fitness performance in soccer. The study further reveals that fatigue during intense intermittent short-term exercise is not correlated with muscle creatine phosphate, lactate, and glycogen.
Publication Name: Medicine and Science in Sports and Exercise
Subject: Sports and fitness
ISSN: 0195-9131
Year: 2003
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The Yo-Yo IR2 test: Physiological response, reliability, and application to elite soccer
Article Abstract:
A study was conducted to inspect the physiological response and trustworthiness of the Yo-Yo IR2 test and assess its application to elite soccer. This showed that the test is reproducible and can be used to appraise an athlete's ability to perform intense irregular exercise with a high rate of aerobic and anaerobic energy turnover.
Publication Name: Medicine and Science in Sports and Exercise
Subject: Sports and fitness
ISSN: 0195-9131
Year: 2006
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Slow-twitch fiber glycogen depletion elevates moderate-exercise fast-twitch activity and O2 uptake
Article Abstract:
Hypotheses that previous glycogen depletion of slow-twitch (ST) fibers increases recruitment of fast-twitch (ST) fibers and results in slow component of VO2 during moderate-intensity exercise was tested. Results indicate that FT fiber recruitments elevates energy requirement of dynamic exercise in humans.
Publication Name: Medicine and Science in Sports and Exercise
Subject: Sports and fitness
ISSN: 0195-9131
Year: 2004
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