General
Do you get 100% out of your Apple Watch? Do it with Spleeft
The Apple Watch already measures the missing data to be the most complete device on the market in all areas. It is important that you
Pablo Vega
08/03/2024
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Blog
New Apple watch extension
General
Building the new Spleeft: Track Barbell Velocity with your Apple Watch
Discover how our small project’s journey to create the first Apple Watch app to measure barbell velocity and jump height has been. It’s been two
Iván de Lucas Rogero
12/01/2024
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General
Autoregulate Your Resistance Training with Z-Scores
In previous publications, we’ve mentioned that the daily condition of the athlete varies depending on a multitude of factors. Your resistance training is one of
Iván de Lucas Rogero
03/11/2022
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General
Manage your Long-Term Performance with Velocity Based Training
Velocity-based training is not just lifting fast. It shows you if your training are going as planned. Let’s deep dive! INTRODUCTION Velocity-based resistance training offers
Iván de Lucas Rogero
01/11/2022
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General
Spleeft: Velocity Based Training in your pocket
When I was a child, I remember watching “futurist” movies, characters using super technologies in their daily life, some far from reality yet (or not)
Iván de Lucas Rogero
16/05/2022
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Entradas de blog General
General
Why Apple Watch Series 12 Is the Best Wearable for 2027
Apple Watch Series 12 is our early pick for the best all-round wearable for 2027. Here is the evidence, the battery-life trade-off, and who should choose it.
Iván de Lucas Rogero
10/09/2026
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General
Dumbbell Pullovers Done Right: Technique, Muscles Worked, and Velocity-Based Coaching with Spleeft
If you train long enough, most “new” exercises eventually feel like remixes of things you’ve already done. Dumbbell pullovers are the rare exception. They look
Iván de Lucas Rogero
11/05/2026
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General
Aerobic Endurance, Cardiorespiratory Capacity, and How Spleeft Makes It Trainable
If maximal strength is your “one big punch” quality, aerobic endurance is everything that happens after the first punch. It’s your ability to keep moving, keep thinking
Iván de Lucas Rogero
02/05/2026
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General
Which Wearable Is Most Accurate in 2026? Apple Watch, Oura, WHOOP, Garmin
If you coach in 2026, you’re basically living inside a wearable marketing war. Apple Watch promises health, ECG, and VO₂, WHOOP promises strain and recovery,
Iván de Lucas Rogero
25/04/2026
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General
Slow Twitch vs Fast Twitch: Coaching Your Fiber Types with Velocity and Spleeft
Every coach knows this athlete. Athlete A looks smooth in warm‑up, can run all day, barely breathing, but when it’s time for a brutal 10
Iván de Lucas Rogero
10/04/2026
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General
Readiness-Based Training: Coaching the Day, Not the Spreadsheet
Most training plans are written like weather forecasts made a month in advance: they look clean on paper and then reality shows up with its
Iván de Lucas Rogero
27/03/2026
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