Human Clinical (n=150,000)systematic reviewGRADE: Very High
Risk of Bias: 1
Importance of Assessing Cardiorespiratory Fitness in Clinical Practice: A Case for a Vital Sign: A Scientific Statement From the American Heart Association
Ross R, Blair SN, Arena R, Church TS, Després JP, Franklin BA, Haskell WL, Kaminsky LA, Levine BD, Lavie CJ, Myers J; American Heart Association Physical Activity Committee.•Circulation•2016•N = 150,000•1040 wks
Intervention Protocol: Breath-by-breath gas exchange metabolic cart cardiopulmonary exercise testing (CPET) quantifying peak VO2 (mL/kg/min) and ventilatory thresholds
Cohort: Comprehensive systematic review across multi-decade cohorts evaluating measured VO2 max via cardiopulmonary exercise testing
Quantitative Endpoints & Effect Sizes
All-Cause Mortality Risk Ratio per 1-MET Increase in VO2 Max-15%
11-17% reduction in all-cause and cardiovascular mortality per 1-MET (3.5 mL/kg/min) increase in measured CRFp < 0.0001
Comparative Mortality Risk Discrimination-60%
Low CRF exhibits higher mortality hazard than traditional risk factors including smoking, hypertension, and high cholesterolp < 0.0001
Clinical Takeaway:Official American Heart Association Scientific Statement designating cardiorespiratory fitness measured via CPET as an indispensable clinical vital sign, demonstrating each 1-MET elevation in VO2 max reduces all-cause mortality by 15%, exceeding traditional cardiovascular risk markers.
Independent Academic Research