Wednesday
Sep142011
Energy System Overlapping
Sep 14, 2011 at 13:24 Here some great new informatiion on Energy system overlapping that TBI Technical direcotr Carlo Buzzichelli- Italy resently mailed out. Hope you enjoy theinformation.
Dominance of an energy system means that over 50% of the energy required for
a maximal activity of a certain duration, comes from that specific energy
system.
According to Van Someren, National Physiology Lead at the English Institute
of Sport, at 60” (not earlier) the energy contribution is 50-50 between
anaerobic and aerobic systems (it differs slightly between type of
activities).
The same thing can be assumed from the same slide (page 26): if at 49” the
Aerobic system contribution is 43% and at 1’53” is at 66%, then the
overlapping happens at some point between 43” and 1’53”, closer to the
former figure. The 400m is NEVER aerobic dominant.
Thus, a 15” sprint can't be aerobic dominant (18’15” in the video).
The study quoted at 20’ of the video (slide 30) was 6” sprint + 30” recovery
by 10, not a 30” sprint 4’ recovery 30” sprint (preview available here:
http://www.tandfonline.com/doi/abs/10.1080/02640419108729897#preview).
The new studies particularly focus on the LA and O2 ATP re-synthesis
initiation.
Aerobic contribution to maximal efforts is already at 3% in 10” and at 28%
in 30”, Mader (1985) had it at 18% at 50”.. this is the novelty.
The novelty is that the aerobic energy system contributes more to shorter
maximal efforts activities than we thought up to the early 90’s, but there
is no dominance up to after 60” of maximal acivity.
Best,
Carlo Buzzichelli
P.S: Video and slides can be found here:
http://www.8weeksout.com/2011/05/24/a-new-perspective-on-energy-systems-video/
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a maximal activity of a certain duration, comes from that specific energy
system.
According to Van Someren, National Physiology Lead at the English Institute
of Sport, at 60” (not earlier) the energy contribution is 50-50 between
anaerobic and aerobic systems (it differs slightly between type of
activities).
The same thing can be assumed from the same slide (page 26): if at 49” the
Aerobic system contribution is 43% and at 1’53” is at 66%, then the
overlapping happens at some point between 43” and 1’53”, closer to the
former figure. The 400m is NEVER aerobic dominant.
Thus, a 15” sprint can't be aerobic dominant (18’15” in the video).
The study quoted at 20’ of the video (slide 30) was 6” sprint + 30” recovery
by 10, not a 30” sprint 4’ recovery 30” sprint (preview available here:
http://www.tandfonline.com/doi/abs/10.1080/02640419108729897#preview).
The new studies particularly focus on the LA and O2 ATP re-synthesis
initiation.
Aerobic contribution to maximal efforts is already at 3% in 10” and at 28%
in 30”, Mader (1985) had it at 18% at 50”.. this is the novelty.
The novelty is that the aerobic energy system contributes more to shorter
maximal efforts activities than we thought up to the early 90’s, but there
is no dominance up to after 60” of maximal acivity.
Best,
Carlo Buzzichelli
P.S: Video and slides can be found here:
http://www.8weeksout.com/2011/05/24/a-new-perspective-on-energy-systems-video/
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