The clinical case for VO₂ max, in the primary literature.
Association of Cardiorespiratory Fitness With Long-term Mortality Among Adults Undergoing Exercise Treadmill Testing
Mandsager K, Harb S, Cremer P, et al.
n = 122,007. Lowest fitness quintile carried 5.04× mortality vs elite. No upper limit of benefit.
Importance of Assessing Cardiorespiratory Fitness in Clinical Practice: A Case for Fitness as a Clinical Vital Sign
Ross R, Blair SN, Arena R, et al.
CRF is currently the only major risk factor not routinely assessed in clinical practice.
Cardiorespiratory Fitness as a Quantitative Predictor of All-Cause Mortality and Cardiovascular Events
Kodama S, Saito K, Tanaka S, et al.
Each 1-MET gain reduced all-cause mortality 13% and cardiovascular events 15% across 33 studies.
Physical Fitness and All-Cause Mortality: A Prospective Study of Healthy Men and Women
Blair SN, Kohl HW III, Paffenbarger RS Jr, et al.
First large prospective cohort establishing fitness as an independent mortality predictor.
Cardiorespiratory Fitness and Mortality Risk Across the Spectra of Age, Race, and Sex
Kokkinos P, Faselis C, Samuel IBH, et al.
US Veterans (n > 750,000). Modest fitness gains cut mortality 13–15%, independent of age, BMI, sex.
Prediction of Maximal Oxygen Uptake From Submaximal Wearable Recordings in Free-Living Adults
Brage S, Westgate K, et al.
Wearable-derived VO₂ max correlated with lab measurement at r ≈ 0.82 across 12,000+ adults.
Reference Standards for Cardiorespiratory Fitness Measured With Cardiopulmonary Exercise Testing: Data From the FRIEND Registry
Kaminsky LA, Arena R, Myers J.
First US CPET reference standards. Age- and sex-specific percentiles from > 7,700 verified maximal tests, now the FRIEND normative baseline.
VO₂ Max in Clinical Cardiology: Clinical Applications, Evidence Gaps and Future Directions
Contemporary review
Positions VO₂ max as central to risk stratification in HF, CAD, valvular and pulmonary disease; identifies wearable estimation and closed-loop programming as the two largest unmet gaps.