u/Otherwise_Scholar_14

I dug a bit into how wearable recovery scores are actually calculated and thought this would be interesting to the whoop crowd.

Most readiness scores (Oura, WHOOP, Garmin Body Battery) follow a weighted-sum model. HRV status accounts for roughly 40–50% of the score. Sleep performance is around 30–40%. Recent training strain fills the rest.

The problem is signal redundancy. A bad night of sleep tanks your HRV and raises your RHR. The algorithm counts that as three separate signals when it is really one event. So it double or even triple-penalises you for the same thing.

But the bigger issue is what the score cannot see at all. HRV tracks the autonomic nervous system meanning how your heart and nervous system are coping with total stress. It cannot detect intramuscular glycogen depletion, muscle fibre micro-tears from eccentric loading, tendon stiffness changes, or accumulated bone stress.

Your ANS often recovers faster than your musculoskeletal system. So you get a "green" score while your tissues are still catching up. This is called decoupling in sports science and it is one of the main mechanisms behind injury.

Curious whether anyone here has noticed their score bounce back fast after a session they know hammered their legs for instance. Do you override it or trust it?

I used to plan my training pretty carefully, weekly mileage, long run progression, speed sessions on the right days but wouldn't do the same for recovery, feeling okay = run, something hurts = day off.

Then I started reading the actual research on how injuries happen and realised that "feeling fine" is not a good recovery metric. In short, there is a fitness-fatigue model that shows your readiness is a balance between accumulated fitness and accumulated fatigue. The tricky part is that cardiovascular fitness rebounds fast but tissue-level repair takes much longer. You can feel ready to go while your tendons and muscles are still mid-rebuild.

On top of that, the research shows that things outside training, sleep quality, nutrition, psychological stress, have a massive effect on how fast your body actually processes training load.

So I'm curious: do you track any of this? Sleep, nutrition, stress? Or do you mostly go by feel and hope for the best? And if you do track, has it actually changed how you train?

I try to create a community where athletes can discuss recovery techinques here r/sports_recovery , I post good comments and useful posts from other communities there. Have a look if that's interesting to you.

I used to plan my training pretty carefully, weekly mileage, long run progression, speed sessions on the right days but wouldn't do the same for recovery, feeling okay = run, something hurts = day off.

Then I started reading the actual research on how injuries happen and realised that "feeling fine" is not a good recovery metric. In short, there is a fitness-fatigue model that shows your readiness is a balance between accumulated fitness and accumulated fatigue. The tricky part is that cardiovascular fitness rebounds fast but tissue-level repair takes much longer. You can feel ready to go while your tendons and muscles are still mid-rebuild.

On top of that, the research shows that things outside training, sleep quality, nutrition, psychological stress, have a massive effect on how fast your body actually processes training load.

So I'm curious: do you track any of this? Sleep, nutrition, stress? Or do you mostly go by feel and hope for the best? And if you do track, has it actually changed how you train?

I try to create a community where athletes can discuss recovery techinques here r/sports_recovery , I post good comments and useful posts from other communities there. Have a look if that's interesting to you.

A very helpful comment

For anyone who's dealt with a nagging injury that kept coming back. I'm not talking here of anything serious, more the aches and pains we're all dealing with

I've been reading a lot about the return-to-training problem and apparently, the cardiovascular system recovers from time off way faster than muscles, tendons and joints. So you come back, your "engine" is ready, your conditioning feels decent but the structures absorbing the load aren't there yet.

Also, your body changes your movement patterns while you're injured (compensation to protect the hurt area). This shifts the load onto other joints which can "move" an injury to another part of your body.

How do you gauge readiness beyond workign with a physio? Do you go by how you feel? Do you use any metrics? Coach? Send it and hope for the best?

I try to post her r/sports_recovery to create a bit of a hub where athletes can discuss recovery techniques, have a look if that's interesting to you.

For anyone who's dealt with a nagging injury that kept coming back. I'm not talking here of anything serious, more the aches and pains we're all dealing with

I've been reading a lot about the return-to-training problem and apparently, the cardiovascular system recovers from time off way faster than muscles, tendons and joints. So you come back, your "engine" is ready, your conditioning feels decent but the structures absorbing the load aren't there yet.

Also, your body changes your movement patterns while you're injured (compensation to protect the hurt area). This shifts the load onto other joints which can "move" an injury to another part of your body.

How do you gauge readiness beyond workign with a physio? Do you go by how you feel? Do you use any metrics? Coach? Send it and hope for the best?

I try to post her r/sports_recovery to create a bit of a hub where athletes can discuss recovery techniques, have a look if that's interesting to you.

There's a concept in sports science called the training-injury prevention paradox (check Dr. Tim Gabbett he published in the British Journal of Sports Medicine).

The main point is that athletes who maintain high chronic training loads are actually better protected against injury than athletes who train in inconsistent spikes and dips. The highest injury risk doesn't come from volume itself, but from a sudden spike in acute load that exceeds what your body has been conditioned to handle.

This makes sense when you look at how tissues adapt. The body remodels along the lines of mechanical stress (this is formalised in something called the mechanostat theory). Training isn't wearing you down, it's actually the stimulus your tissues need to get stronger. The problem starts when you don't give your body enough time and resources to complete that adaptation before you hit it again.

So the real risk factor isn't "training too hard.,", tt's the mismatch between applied stress and recovery capacity. And the big question becomes then "am I recovering appropriately".

Sadly, recovery is not something that can be rushed or hacked. The hierarchy goes, in that order: sleep (where growth hormone pulses drive tissue repair), nutrition (energy availability and protein for myofibrillar synthesis), and stress management (your nervous system doesn't distinguish between interval sessions and work deadlines). Compression boots, ice baths, massages... although they "feel nice" have fairly little impact on tissue recovery.

TL;DR: athletes with consistently high training loads have LOWER injury rates than inconsistent trainers

Hey everyone! I'm u/Otherwise_Scholar_14, a founding moderator of r/sports_recovery.

This community is about all things sports recovery. Tips and protocols to not injure yourself, improve your performance and reach your sports goals. Really excited to have you arround!

To note, this is not a health sub, if you injured yourself, this is a place to find support or vent but NOT for medical advice. Do get in touch with a doctor if that's the case ;)

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