Jason Bartram

46 posts

Jason Bartram

Jason Bartram

@jasonCbartram

Applied Sport Scientist / High Performance Consultant

Katılım Temmuz 2015
537 Takip Edilen377 Takipçiler
Mehul Vaitha
Mehul Vaitha@mehulvaitha·
@jasonCbartram Hi, just to let you know in order to create a thread, you need to reply to the original tweet. As it stands, each nth/6 post is a standalone tweet.
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Jason Bartram
Jason Bartram@jasonCbartram·
Critical Power (CP) model describes maximal work capacity, combining an aerobic, rate limited parameter (CP) and a capacity limited parameter (Wʹ). Working above CP will utilise Wʹ until depleted, coinciding with task failure (Vanhatalo 2011) #ESSTC21 1/6
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Jason Bartram
Jason Bartram@jasonCbartram·
Applying the intermittent CP model to Team Pursuit race analysis will require individualised Wʹ recovery rates. These can be calculated by completing a range of exhaustive intermittent work bouts with varying recovery powers. #ESSTC21 6/6
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Jason Bartram
Jason Bartram@jasonCbartram·
@DrNathanT Thanks Nathan. It's going to be interesting to see if custom recovery rates will lower this variability, or whether we simply need to lower our expectations regarding applications of the model.
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Nathan Townsend
Nathan Townsend@DrNathanT·
@jasonCbartram Same results as I've found in recreational trained individuals. The average W'bal is generally within +/- 1.5kJ of 0 upon exhaustion/task failure, but individual error can be pretty large eg: up to 5 kJ. Great stuff and an excellent article :-)
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Jason Bartram
Jason Bartram@jasonCbartram·
Analysing power data from World Cup Team Pursuits, the mean final Wʹ balances were not different to 0kJ when using the cohort specific recovery rate. However individual variability was still considerably high. #ESSTC21 5/6
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Jason Bartram
Jason Bartram@jasonCbartram·
@PughCycle Hi Charlie, yes your insight is spot on, however a well planned and rehearsed strategy should aim to minimise this across riders.
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Charlie Pugh
Charlie Pugh@PughCycle·
@jasonCbartram Great work, Jason! If drafting allows recovery, would the sheltered riders finish with some W' remaining?
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Jason Bartram
Jason Bartram@jasonCbartram·
Individual workloads experienced in a Team Pursuit are supramaximal, intermittent, and exhaustive. Tracking Wʹ balance using the Skiba 2 model, but with a cohort specific recovery rate, should see final Wʹ balances of 0kJ. #ESSTC21 4/6
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Jason Bartram
Jason Bartram@jasonCbartram·
The intermittent Wʹ balance models were developed by Skiba using mostly recreational participants. We have previously shown that elite cyclists recover their Wʹ faster at the same relative intensity (Bartram 2018) #ESSTC21 3/6
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Jason Bartram
Jason Bartram@jasonCbartram·
An evolution of the CP model describes both depletion and recovery of Wʹ, enabling application to intermittent work. Wʹ recovery is deemed to occur below CP, is curvilinear relative to time, and is faster at lower work rates (Skiba 2014) #ESSTC21 2/6
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Jason Bartram retweetledi
Trent Stellingwerff, PhD / CSEP-CEP / FACSM / ChPC
Check this out. Pretty much every single runner, except the winner @EliudKipchoge, basically had a distance to exhaustion approach in today's men's marathon. How do we best mimic this in research study designs? Time trials not always the best approach IMHO.
Tomoyuki MARUYAMA@Tom1jpn

東京五輪男子マラソン ペース変動グラフ #TOKYO2020 Men's #Marathon Pace Chart youtu.be/Ism1uNnMEnw #大迫傑 #中村匠吾 #服部勇馬 #eliudkipchoge #東京2020オリンピック

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Håkan Andersson
Håkan Andersson@sprintcoachSWE·
The new normal if Marcell Jacobs wins the 100m😉 Forza 🇮🇹
Sundsvall, Sverige 🇸🇪 English
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