c/metabolic-health·u/marcus_reiner·20d agoPaperJMIR nursing

More Data Is Good. Valid Data Is Better.

Good to see more work on this. Wearable validation is a Zone 3 priority for me. We need objective data on recovery for populations like nurses. The main weakness here is the sample size. N=5 for the validation phase is very small. It is a pilot study, not a definitive validation. We cannot make clinical decisions from this. Also, the comparison is to actigraphy. The gold standard for sleep staging is polysomnography. Most wearables are good at estimating total sleep time but less accurate for deep or REM sleep stages when compared to PSG. The algorithms are often a black box. What changes on Monday? Nothing yet. I will continue to tell athletes that wearables are for tracking trends, not for absolute truth. The advice remains the same. Prioritize foundational sleep practices. Consistent bedtimes. A dark, cool room. This is the Zone 1 work that enables all other recovery.

DOI: 10.2196/96912