Top Tweets for #TDFscience
#TDFscience
What kind of shape is a former #TourdeFrance winner in long after retirement?
There is some great data on 5 time #TDF champion Miguel Indurain published in @IJSPPjournal
Details in full thread
Image src https://t.co/OmBIzEIDPA
@LeTour @letour_uk #TDF2019 #letour
#TDFscience
Thread/1
Is strategic resting effective in the #TourdeFrance?
One study found successful breakaways during #TDF were more likely following a poor performance the day before ( intentionally holding back / saving effort).
@LeTour #TDF2019
https://t.co/ZFmx3NntA4
#TDFscience
How did @LanceArmstrong's physiology change as he dominated the #TourdeFrance?
Major improvements in cycling efficiency (converting chemical energy to mechanical power)
Full report by Ed Coyle in @japplphysiol
https://t.co/iehz99dtWw
@LeTour @letour_uk #TDF2019
Thread/1
How do individual time trials in the #TourdeFrance differ from team trials?
World class cyclists complete individual 28km (17mi) time trials at ~85% of max heart rate (based on averages).
Source @MSSEonline
https://t.co/c2mZXLAd8e
#TDFscience @LeTour #TDF2019 #TDF
Thread/1
Do cyclists in the #TourdeFrance live longer than average men?
According to one study, #TDF athletes have a 41% lower mortality!
Full details in thread. #TDFscience
@LeTour @letour_uk #TDF2019 #LeTour2019 #LeTour @letourdata
Img source: https://t.co/fNvkMGdVeT
Thread/4c
Overall a nice study demonstrating the importance of efficiency... but, some study limitations to note:
-Non-pro riders were younger than world-class
-Testing done only once, and out of season
-Tests done on ergometer, not own bike
#TDFscience #TDF2019 #LeTour #TDF19
#TDFscience
Thread/1
A high VO2max is required to be a world class endurance athlete. But what else separates top #TourdeFrance cyclists from the rest of the pack?
Gross Efficiency! See full thread
Image source https://t.co/dSMTTTNhE7
@LeTour @letour_uk #TDF2019 #TDF #letour
#TDFscience
Thread/1
As @ThibautPinot moves near the top of #TDF2019, let's examine his data as he grew from a junior to a #TourdeFrance contender. @GroupamaFDJ
Read full thread for details!
@LeTour @letour_uk #TDF #letour @NBCSNCycling
Photo source: https://t.co/Wq2e4ixkz3
Thread/1
#TDFscience
As the mountain stages at @LeTour begin, let's compare the different types of cycling specialists.
How do #TourdeFrance who focus on mountain stages differ than those who excel in flat stages / time trials?
@letour_uk #TDF2019 #TDF #letour @NBCSNCycling
#TDFscience
Thread/1
How often do cyclists get injured during the #TourDeFrance?
>12% of starters drop out from acute injury each year
See full thread for more details!
@LeTour @letour_uk #TDF2019 #TDF #letour @NBCSNCycling
Source @OJSM_SportsMed
https://t.co/swM6b1tHUq
Thread /7a
Summary:
Even though this study claiming more attractive cyclists performed better got LOTS of media attention, this thread hopefully explains that it just does not make sense when one actually understands #TDF and #TDFscience!
Thread /1
#TDFscience
Do more attractive looking cyclists perform better at the #TourdeFrance?
According to one study, yes. BUT, this is misinterpreted #statistical noise! Implausible!
Read the full thread for details!
@LeTour @letour_uk #TDF2019 #TDF #letour @NBCSNCycling
#TDFscience
#TourdeFrance riders go up to 10% faster in the team time trial vs. individual trial.
Drafting not only helps the trailing cyclists, but also the lead by creating artificial tailwind
@LeTour @letour_uk #TDF2019 #TDF #letour @NBCSNCycling
https://t.co/wQIe02RCiU
@lancearmstrong @japplphysiol @LeTour @letour_uk Thread /3 #TDFscience
According to the references published in @MayoProceedings, this is >95th percentile for the avg healthy population.
http:// https://t.co/FPXdD2Cy8v
@lancearmstrong @japplphysiol @LeTour @letour_uk Thread /2 #TDFscience
8 months following chemotherapy, “during a period of inconsistent and reduced training,” @LanceArmstrong still had a VO2max of 66.6
Full report by Ed Coyle in @japplphysiol https://t.co/iehz99dtWw
@LeTour @letour_uk #TDF2019 #TDF #TourdeFrance #letour
#TDFscience
@LanceArmstrong's VO2max was measured at 81. Estimated to be ~85 during #TourDeFrance victories.
Full report by Ed Coyle in @japplphysiol https://t.co/iehz99dtWw
@LeTour @letour_uk #TDF2019 #TDF #TourdeFrance #letour
Thread /3
#TDFscience
VO2max can be estimated many ways, but only actually be measured by equipment which actually measures breathing volume and gas analysis.
Example of a VO2max measurement on a runner in the old @HPUBiomechanics lab (using a @WoodwayTreadmil).
#physiology
Thread /2
#TDFscience
Oxygen transport to muscles is a "serial" system - limited by bottlenecks at any one point - possible sites demonstrated nicely in this diagram from 1997 @MSSEonline
https://t.co/TuMR6RqyNI
Thread /1
#TDFscience - Some key terms used in #cycling science.
VO2max = Maximum volume of oxygen consumption. Body’s ability to take oxygen from the air and use it for muscle contraction. ↑ values = ↑ “aerobic engine”
@LeTour @letour_uk #TDF2019 #TDF #TourdeFrance #letour
Want to learn the #science of the #TourdeFrance? Follow my #TDFscience for #physiology and #sportsmedicine insight!
For #TDF2019, I will be tweeting daily about all aspects of #research on #TDF athletes and the science of pro #cycling .
@LeTour @letour_uk #letour #TDF19
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