As I said, Stryd calculates mechanical power, period. IOW, it is completely agnostic to physiology.
However, Stryd power is highly predictive of the energetic cost of running (Garmin somewhat less so) because mechanical power output is the most important driver of metabolic cost
Can we please stop with the Stryd pod power nonsense.
Every time I see there's been new posts and I think someone might have posted something interesting, and it's just this tiresome back and forth again!
I'm afraid that after this many years most of the curiosity about NSM has been mapped out. People that are interested in it have their answers .. especially now that the book is out
So you're left with Jan doing his thing, runnersareclueless being smarter than everyone else and the occasional "I can't believe it's not speedwork" critic occupying most of the thread
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But ... for noobs like me that occasionally ask basics questions this thread provides much more to the point answers than say Reddit, so there is that too :)
As I said, Stryd calculates mechanical power, period. IOW, it is completely agnostic to physiology.
However, Stryd power is highly predictive of the energetic cost of running (Garmin somewhat less so) because mechanical power output is the most important driver of metabolic cost
exactly backwards but ok
feel free to find anybody reputable that agrees with your silliness
if you had any sources you’d provide them
cause im pretty done with the contrarian BS and your carnival barking
youre also the guy who thinks 3 workouts a week and lactate are too complicated, so everyone can consider the source
Training prescription in running activities have benefited from power output (PW) data obtained by new technologies. Nevertheless, to date, the suitability of PW data provided by these tools is still uncertain. The present st...
In recent years, different companies have developed devices that estimate "running power". The main objective of this paper is to evaluate the effect of running speed on aerobic and running powers measured using force plates...
This study assessed the Stryd running power meter validity at sub-maximal speeds (8 to 19 km/h). Six recreational runners performed an incremental indoor running test. Power output (PO), ground contact time (GCT) and leg spri...
Footpod monitors are wearable devices attaching to the shoe with the ability to sense oscillations in leg movement; however, few studies provide reliability. The purpose was to provide reliability data for outdoor tasks as me...
Stryd is a foot pod that reliably estimates running power. Our objectives were to examine the efficacy of the website-generated Stryd critical power (CPSTRYD) as a meaningful parameter for runners. 20 runners performed their...
Pinedo-Jauregi, A and Ozaeta-Beaskoetxea, E. Reliability and validity of Stryd for measuring running kinematics during an incremental treadmill test. J Strength Cond Res 39(11): e1295-e1304, 2025-Inertial Measurement Unit dev...
This study investigated biomechanical assessments in trail running, comparing two wearable devices-Stryd Power Meter and GARMINRP. With the growing popularity of trail running and the complexities of varied terrains, there is...
We sought to determine the utility of Stryd, a commercially available inertial measurement unit, to quantify running intensity and aerobic fitness. Fifteen (eight male, seven female) runners (age = 30.2 [4.3] years; V·O2max =...
The running intensities at CS and CP were similar, supporting the use of running power (Stryd) as a metric of aerobic fitness and exercise prescription, and 2 trials provided a reasonable, albeit higher, estimate of CS and CP...
The addition of wearable technology during a 3-minute all-out overground running test (3MAOT) could provide additional insights to guide training and coaching strategies. The purpose of this study was to explore the relations...
It is unclear if running power (RP) estimated by the Stryd footpod device maintains its linear relationship to metabolic power (WMET) when switching between training and racing shoe types. This study determined if RP estimate...
Net-net, these studies clearly demonstrate the validity and reliability of the Stryd not only for measuring power but also for quantifying important biomechanical variables like leg spring stiffness. Of course, it's not perfect, with conditions associated with a softer landing (trail running, "super shoes") being especially challenging.
Correct, since the power measurement is derived from accelerometer readings, they are automatically in watts per kilogram. I don't know why they opted to have you provide a body mass to convert to watts.
Regardless, it's still mechanical power - it correlates well with metabolic rate under most conditions only because efficiency is rather constant. However, as that shoe study you posted shows, it is possible to dissociate changes in the two.
Ironically, this disproves your claim that Stryd is somehow attempting to calculate or estimate metabolic power
I "figured out" Stryd measurements over a decade ago.
amazing how quickly we went from knowing very little about it and having to do research to now being in software and product development for the device
