Knowledgeiswatt

Already 22 research articles uploaded on Substack Platform! Every week a new one! knowledgeiswatt.substack.com

141st KIW Research Note is Out! 'Protein for Cyclists' by @EatsleepfitJeff Learn here: knowledgeiswatt.substack.com

@cuddy_tom It should be valid for all 'cyclic' sports - Gabriele

@knowledgeiswatt Gold standard for all testing modalities or just cycling?

1/10 In 2026, what is the gold standard for the 2nd exercise threshold? There are many concepts used in endurance physiology: • MLSS • LT2 • Critical Power • FTP They all try to describe the same boundary - but they are not the same thing. 🧵👇

@JimGalanes What do you mean for 'physiological point'? - Gabriele

@knowledgeiswatt Yes it is all hypothetical. Sure there is a MLSS but it cant be found via any of the described ramp protocols. Like trying to find a corner in a circle. Maybe critical power is a valid transition point but it isn't a physiological point.

10/10 Not really. Studies show that FTP and Critical Power can differ substantially. At the individual level: • ~50% of athletes show differences >4% • discrepancies can reach 10–15% So FTP cannot reliably estimate the MMSS. You can learn more at this 15min read: knowledgeiswatt.substack.com/p/139-critical…

9/10 What about FTP? In cycling it's often defined as: ~95% of 20-min max power and interpreted as the power sustainable for ~60 min. But does FTP represent the true MMSS?

139th KIW Research Note is Out! Critical Power is the Gold Standard for the 2nd Exercise Threshold 'aka' Maximum Metabolic Steady State (MMSS) - not FTP or the 2nd Lactate Threshold. Learn more in this 15 min read: 👇 lnkd.in/dveDQDRy

139th KIW Research Note is Out! Critical Power is the Gold Standard for the 2nd Exercise Threshold 'aka' Maximum Metabolic Steady State (MMSS) - not FTP or the 2nd Lactate Threshold. Learn more in this 15 min read: 👇 lnkd.in/dveDQDRy

137th and 138th KIW Research Notes are out! The Power Profile at 2023 UCI Men and Women e-sports World Championships. lnkd.in/dg3JsJmB lnkd.in/dfWWJKJf

136th KIW Research Note is Out! 👇 knowledgeiswatt.substack.com/p/134-optimizi…

Special Discount: -20% off! to get full access to all the growing Knowledgeiswatt content! - More than 130+ Unique Cycling Performance Research Articles including many topics: training, physiology, nutrition, recovery, aerodynamics and more! 👇 knowledgeiswatt.substack.com/Classics2026

134th KIW Research Note is Out! IRON AND CYCLISTS - BY DR JEFF ROTHSCHILD 👇 open.substack.com/pub/knowledgei… In this article Jeff Rothschild, PhD explains: 1) TESTING IRON STATUS 2) IRON DEFICIENCY 3) DIETARY IRON SOURCES 4) IRON SUPPLEMENTATION PROTOCOLS 5) IRON AND ALTITUDE EXPOSURE