Cycling Physiology

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Tour 2013 rest day: Pondering the unanswerables with physiological implications

2013-07-08: Chris Froome's near-record ascent of Ax-3-Domaines asks some challenging physiological questions. Proof is impossible, but the implications warrant…

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Clean performances to surpass doped performances?

2013-07-06: A brief look at the the effect of doping on performance, with a view to predicting when, if ever, a clean performance will surpass a…

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Froome’s non-published TDF power output: Noise for ‘pseudoscientists’?

2013-07-05: Team Sky have refused to publish their cyclist's power outputs for fear of misinterpretation by "pseudoscientists". Does he have a point, or is transparency…

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The Power of the Tour de France 2013: Performance analysis groundwork

2013-07-03: The 2013 Tour de France gets underway this weekend, and in preparation for our analysis, I explain the principles and concepts behind analysing Tour mountain…

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Percentage of blood samples measured in professional cycling that had UNUSUAL reticulocyte percentages. Source: Zorzoli & Rossi, 2010

Biological passport: Effective fight or futile failure?

2011-03-20: Has the introduction of the biological passport influenced cycling? A look at performance, based on the science and legal factors behind the…

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Blood post passport

The Biological Passport: Legal, scientific and performance views

2011-03-16: It’s been just over a week since the Court of Arbitration for Sport released the¬†summary of its decision to issue bans to two Italian cyclists,…

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The 2014 Tour: Performance implications & a reflection on the origins

2014-07-25: Very brief thoughts on the 2014 Tour, and a particular nostalgic moment to 2009, when David Walsh actually introduced me to performance analysis as a…

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Pro sprint

The profile of a sprint: What does it take to win a sprint stage?

2014-07-08: What does it take to win sprint stages and the green jersey of the Tour de France? I explore the power output, aerodynamics and tactics…

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Tour 2014 map

2014 Tour de France: Performance analysis ready

2014-07-05: The 2014 Tour de France rolls out of Leeds today. Over the next three weeks, the usual performance analysis is bound to ask questions. …

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