Training Impulse

Ramble about Training Load sometimes. Knowledge 1st. Tech 2nd. 💙

[Training Impulse @trainingimpulse]

@SimonBrundish @bigdotears Or a marking suddenly becomes visible and it throws the car into the footpath

[Grant Abt @grantabt]

At the @JSportsSci we're recruiting a Statistics, Transparency, and Rigour (STAR) editor. Details at the link below. The deadline for applications is 19 November 2026.

https://t.co/796HvEC1Nd..

[Training Impulse @trainingimpulse]

Is Quansah really better than TAA defensively? Debateable. However, there must've been atleast 10 occasions where TAA would have killed it with a better pass/cross. @SimonBrundish

[Training Impulse @trainingimpulse]

@SimonBrundish Higher TRIMP with fatigue with respect to GPS??? The evidence shows HR is supressed with fatigue acutely resulting in a lower TRIMP. Because that happens ACWR falls apart as a construct! Kind of embarassing from a company with many years of capital in HR. Marketing>Insight!

[Training Impulse @trainingimpulse]

@SimonBrundish Robot's don't require a heart!

[Training Impulse @trainingimpulse]

@ziggibson Slim pickings for a captain with ideas on the pitch elsewhere. VC in the same mould too. Kind of damning for Eng cricket with all the talent around.

[Nick Krontiris @nick_krontiris]

This study finds significant limitations in the ability of photoplethysmography (PPG), a technology employed by many many wearable devices, to act as a surrogate for electrocardiogram in heart rate variability measurements in athletes.

[Alan Couzens @Alan_Couzens]

Interesting paper on "how low can you go" when it comes to training intensity...

Researchers compared 6 weeks of training at VT1 versus ~12% below VT1, with total volume matched.

Result?

Both groups improved endurance performance by essentially the same amount:

• Critical Speed ↑ similarly
• 3600m performance ↑ similarly
• Jump performance ↑ similarly
• D′ (anaerobic capacity) ↓ similarly

The only real difference was that the VT1 group reported:

• Higher RPE 🥵
• More fatigue 😫
• Higher training strain 💔

In other words, running ~10-15% slower than VT1 produced the same fitness gains with less overall training stress.

A useful reminder that just because it feels harder, doesn't mean it's more productive...

Sometimes, slower really is smarter!

[Anthony Weldon (PhD) @DrAnthonyWeldon]

Sports researchers: Have you used LLMs (e.g., ChatGPT) in your research? Take part in a 🌍 global study exploring how LLMs are shaping sports research. Eligibility: 18+ and published since 2023. ⏱️ 15 mins, anonymous.

https://t.co/K3Eff1sYsG

[Loïs Mougin @LoisMougin]

New publication Sports Medicine!

After 35 years, how well does Joyner’s endurance performance model still hold up?

I’m excited to share our latest paper where we used this classic model in a large cohort of 888 individuals , from recreational athletes to world-class.

[Samuele Marcora @SamueleMarcora]

Long awaited update of a classic review in exercise physiology

[Alan (Zig) St Clair Gibson @ziggibson]

https://t.co/0SNDuqjrcE
Fot those interested in all things fatigue, I had a great discussion with Tony Boutagy as part of his exceptional podcast series - he is so talented at 'getting it all out' of those he interviews. Link below. Enjoy! Honourable mentions for @Scienceofsport @JeroenSwart @ProfTimNoakes and other collabotors.

[Training Impulse @trainingimpulse]

@WG_RumblePants Brian Lara

[Alan (Zig) St Clair Gibson @ziggibson]

For those interested in all things fatigue, I did a podcast with Tony Boutagy a few weeks ago which came out on Youtube today - link below. Enjoy. If may of course put you to sleep!! (-:

https://t.co/fGWQiqIYGj

Thanks Tony for a great interview and final package / podcast...

[Training Impulse @trainingimpulse]

You're hearing about people talk about dose-response increasingly. I remember a time where no one wanted to acknowledge it because the fancy dose measures would be defunct if you examined the relationship with response and the subsequent implication for training prescription!

[Olli-Pekka Nuuttila @OPNuuttila]

Our new paper is available @EJAP_official! In this exploratory study, we assessed the magnitude and variance of physiological strain across moderate and vigorous exercise intensities using three prescription methods: METs, %VO₂max, and lactate thresholds.
https://t.co/np6cuB8sYD

[footballscience @MCRumpf]

#footballresearch 46/2025 https://t.co/eUs4D796UO @OliverFaude @Gerheaney @e_delapascua @Van_Bassios @CiDeely @BlueSpotScience @IrineuLoturco @DrAnthonyWeldon @CoachMattLA @smith_perform @BlaineMcKenna77 @Peter_Edholm @PeterKrustrup @lemonwatcher @acea_ngel @StefanAltmann3

[David Bishop (🦋 also bluespotscience.bsky.social) @BlueSpotScience]

A massive team effort to produce this joint ESSA & ACSM expert statement on “Physical Activity and Exercise Intensity Terminology”, which has been published in both JSaMS https://t.co/CqHzbleCht & https://t.co/XEnHHagwRC

Thread 🧵👇🏽

[Training Impulse @trainingimpulse]

@SimonBrundish All I heard on radio today repeatedly was ... Slot deserves backing because of last season ... but Salah is wrong to rely on past performances.

[Training Impulse @trainingimpulse]

@Clagopuvigo Given the known high variation for numerous reasons in "match activity profiles" NOT "performance" is this an ethical study? Especially when framed as "white players performed better than black players".