Comments on: Assessments: The Multistage Fitness (Bleep) Test http://www.myshotokan.com/blog/assessments-the-multistage-fitness-bleep-test/ Personal and Dojo Shotokan Karate Blogs Tue, 23 Nov 2010 12:26:41 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Simon http://www.myshotokan.com/blog/assessments-the-multistage-fitness-bleep-test/comment-page-1/#comment-762 Simon Thu, 23 Sep 2010 12:01:38 +0000 http://cerin.wordpress.com/?p=889#comment-762 Hiya Just wondering what source you used for the Results table for indicating results 'good or bad' for the multistage fitness test? I need to record it for a BTEC Sport Assignment. Thanks very much! Simon Hiya

Just wondering what source you used for the Results table for indicating results ‘good or bad’ for the multistage fitness test?

I need to record it for a BTEC Sport Assignment.

Thanks very much!
Simon

]]> By: Chris http://www.myshotokan.com/blog/assessments-the-multistage-fitness-bleep-test/comment-page-1/#comment-58 Chris Tue, 01 Dec 2009 15:12:14 +0000 http://cerin.wordpress.com/?p=889#comment-58 Cerin, what application does the MSFT have to Karate (kumite, kata, and even kihon)? The physical activity during the test is almost charaterised by graded steady-state physical activity, and neither does it reflect the physical demands or muscle recruitment patterns of karate, which are mainly maximal explosive power used intermittently both in kata and kumite. The energy demands of kunite have been determined and are divided in percentages as follows: 50% alactic; 30% lactic acid; 20% aerobic (Bompa & Carrera, 2005, pp 135). The main contributors for energy demands are creatine phosphate and glycogen. At the onset of performance, Karate typically shows rapid movement of power, and energy requirements far exceed the oxygen (O2) delivery capacity. This is even at cellular level where O2 may be present, but the transfer from aerobic energy pathways progress too slowly and therefore cannot meet energy demands. Therefore, rapid anaerobic (without O2) energy transfer determines how fast a karate ka reacts or moves, how hard they kick or punch , and how long they sustain high intensity performance for a given bout. McArdle et al, (2000) stated that all out exercise for up to 90 seconds mainly depends on anaerobic metabolism. The first 6 seconds of all out exercise ATP (adenosine triphosphate) + PCr (phosphate creatine) are broken down and provide almost all energy to power muscular effort. For all exercise lasting for up to 10 seconds only a small amount of lactate forms and recovery progresses rapidly (i.e. alactacid) within 30-60 seconds. Rapid glycolysis begins to take effect from 10 seconds and dominants energy transfer for exercise up until 90 seconds. Anaerobic energy comes by way of glycolysis (breakdown of glucose) which forms 2 molecules of pyruvate for every 1 glucose molecule. Simply put, glycolysis recycles ATP to release energy. Lactate will form and shuttle between pyruvate but cannot keep pass with the recycling of ATP turnover and will have to shut down (fatigue), or the rate of turnover of APT needs to slow down (intensity reduces) (McArdle et al., 2000, pp 107). Despite the fact that aerobic oxidation does not dominant Karate, which is mainly fuelled by the two previous energy pathways, it does play an important role in recovery (ATP-PCr) and the ability to sustain performance for up to 180 seconds (Glycolytic energy system), particularly for kumite bouts (3 minutes). Not dissimilar to other sports that require high intensity activity, after 90 seconds intensity somewhat diminishes as exercise duration extends between 2-3 minutes. Reliance on anaerobic energy pathways significantly reduces, and energy release from oxidative (O2) reactions dominate exercise. The MSFT have been validated across a number of team sports (football, rugby, basketball etc), yet they have been criticised for failing to accurately assess physiological demands for the sport (See Reilly, 2005. Ergonomics model for soccer). Though the information you provided is informative and valid for assessing aerobic capcity for team sports and general fitness, you failed to provide any rationalisation for its use within karate Cerin, what application does the MSFT have to Karate (kumite, kata, and even kihon)? The physical activity during the test is almost charaterised by graded steady-state physical activity, and neither does it reflect the physical demands or muscle recruitment patterns of karate, which are mainly maximal explosive power used intermittently both in kata and kumite. The energy demands of kunite have been determined and are divided in percentages as follows: 50% alactic; 30% lactic acid; 20% aerobic (Bompa & Carrera, 2005, pp 135). The main contributors for energy demands are creatine phosphate and glycogen.

At the onset of performance, Karate typically shows rapid movement of power, and energy requirements far exceed the oxygen (O2) delivery capacity. This is even at cellular level where O2 may be present, but the transfer from aerobic energy pathways progress too slowly and therefore cannot meet energy demands. Therefore, rapid anaerobic (without O2) energy transfer determines how fast a karate ka reacts or moves, how hard they kick or punch , and how long they sustain high intensity performance for a given bout.

McArdle et al, (2000) stated that all out exercise for up to 90 seconds mainly depends on anaerobic metabolism. The first 6 seconds of all out exercise ATP (adenosine triphosphate) + PCr (phosphate creatine) are broken down and provide almost all energy to power muscular effort. For all exercise lasting for up to 10 seconds only a small amount of lactate forms and recovery progresses rapidly (i.e. alactacid) within 30-60 seconds.

Rapid glycolysis begins to take effect from 10 seconds and dominants energy transfer for exercise up until 90 seconds. Anaerobic energy comes by way of glycolysis (breakdown of glucose) which forms 2 molecules of pyruvate for every 1 glucose molecule. Simply put, glycolysis recycles ATP to release energy. Lactate will form and shuttle between pyruvate but cannot keep pass with the recycling of ATP turnover and will have to shut down (fatigue), or the rate of turnover of APT needs to slow down (intensity reduces) (McArdle et al., 2000, pp 107).

Despite the fact that aerobic oxidation does not dominant Karate, which is mainly fuelled by the two previous energy pathways, it does play an important role in recovery (ATP-PCr) and the ability to sustain performance for up to 180 seconds (Glycolytic energy system), particularly for kumite bouts (3 minutes). Not dissimilar to other sports that require high intensity activity, after 90 seconds intensity somewhat diminishes as exercise duration extends between 2-3 minutes. Reliance on anaerobic energy pathways significantly reduces, and energy release from oxidative (O2) reactions dominate exercise.

The MSFT have been validated across a number of team sports (football, rugby, basketball etc), yet they have been criticised for failing to accurately assess physiological demands for the sport (See Reilly, 2005. Ergonomics model for soccer). Though the information you provided is informative and valid for assessing aerobic capcity for team sports and general fitness, you failed to provide any rationalisation for its use within karate

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