Key result
Smartphone-based 3-MST accurately estimates remote VO2max across diverse demographics, skin tones, and devices.
Why the study?
VO2max is a highly predictive cardiovascular biomarker but is rarely measured in large-scale studies or routine care due to cost, burden, and equipment requirements.
Does a smartphone-based VO2max estimation protocol accurately measure VO2max compared to gold standard treadmill testing in a diverse population?
Comparison
Smartphone-based 12-minute run test and 3-minute step test vs gold standard treadmill VO2max and two silver standard clinical protocols
Design
Observational validation study in clinical and remote settings
Authors
Loading...
May enable scalable VO2max assessment; leaves open accuracy and clinical utility pending validation.
Observational (n=221)
Does a smartphone-based VO2max estimation protocol accurately measure VO2max compared to gold standard treadmill testing in a diverse population?
Effect estimate: pc=0.61 for 3-MST
A smartphone-based 3-minute step test using camera-derived heart rate recovery provides a valid and reliable remote estimation of VO2max across diverse demographics and smartphone devices.
Webster et al. (2021) reported an observational. Smartphone-based 3-minute step test (3-MST) and 12-minute run test (12-MRT) vs. Gold standard treadmill-based VO2max measurement was evaluated on Lin concordance with gold standard VO2max testing (pc=0.61 for 3-MST). The smartphone-based 3-minute step test (3-MST) accurately estimated VO2max in remote settings (concordance pc=0.61) across diverse demographics, skin tones, and smartphone devices.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: