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Thomas Mortelmans

Thomas Mortelmans

05
Oct
Entry #041: Running Economy: The Efficiency Dimension That Separates Two Equal Engines

Entry #041: Running Economy: The Efficiency Dimension That Separates Two Equal Engines

Put two runners side by side who share an identical ceiling for oxygen uptake, the same lactate thresholds, the same
16 min read
02
Oct
Snippet #038: Carbohydrates Refill Your Fuel Tank. Protein Repairs the Engine.

Snippet #038: Carbohydrates Refill Your Fuel Tank. Protein Repairs the Engine.

After endurance exercise, stored muscle fuel (called glycogen) is what powered you, and carbohydrate is the only nutrient that refills
4 min read
30
Sep
Open Lab #010: Preventative strategy and training methodology to prevent ACL Injuries - RevaCenter

Open Lab #010: Preventative strategy and training methodology to prevent ACL Injuries - RevaCenter

We spend a disproportionate amount of time obsessing over engine displacement—VO2max, lactate thresholds, and mitochondrial density—while often neglecting
13 min read
28
Sep
Entry #040: Training in the Furnace: How Heat Acclimation Rebuilds the Endurance Engine

Entry #040: Training in the Furnace: How Heat Acclimation Rebuilds the Endurance Engine

Every endurance athlete knows the feeling of a body in revolt on a hot day. The pace that felt easy
15 min read
25
Sep
Snippet #037: Fasted Training and the Fat-Oxidation Shift

Snippet #037: Fasted Training and the Fat-Oxidation Shift

Starting an exercise session with low carbohydrate availability, such as a fasted morning ride, shifts the body away from burning
4 min read
21
Sep
Entry #039: W′ and the Anaerobic Battery: What Happens Above Critical Power

Entry #039: W′ and the Anaerobic Battery: What Happens Above Critical Power

There is a moment in almost every hard race where the body stops feeling like it belongs to you. The
16 min read
18
Sep
Snippet #036: When the Gut Wall Cracks Under Heat and Effort

Snippet #036: When the Gut Wall Cracks Under Heat and Effort

During prolonged or intense exercise, especially in the heat, blood is redirected away from the digestive tract toward working muscles.
4 min read
14
Sep
Entry #038: Heart Rate Variability for Endurance Athletes: What It Measures, When It Helps, and Where It Is Just Noise

Entry #038: Heart Rate Variability for Endurance Athletes: What It Measures, When It Helps, and Where It Is Just Noise

You wake up, reach for your phone, and lie still for sixty seconds while a strap or a camera lens
15 min read
11
Sep
Snippet #035: Phosphocreatine: The Muscle's Instant ATP Battery

Snippet #035: Phosphocreatine: The Muscle's Instant ATP Battery

Creatine accumulates in muscle mainly as phosphocreatine (PCr), a high-energy compound that rapidly re-donates a phosphate group to
4 min read
09
Sep
The athletes at the end of the alphabet

The athletes at the end of the alphabet

Bruna Maia is a runner, a data scientist and an electrical engineer. She played tennis at international level for a
15 min read