If there were any means to get my ass back to the gym and motivated it is reading things like THIS and pushing through back pain and tearing up my stupid excuses. BLAH BLAH BLAH BETH, I DON'T CARE THAT YOU CAN'T DRIVE YOU WILL WALK TO THE GYM AND DO IT …
The FIT Treadmill Score is calculated using the patient’s age, gender, fitness level measured by METs, and peak heart rate reached during exercise. Researchers found these four factors to be the greatest predictors of mortality risk. After the research team accounted for other important variables, such as diabetes and family history of premature deaths, they determined fitness level to be the single most important predictor of death and survival.
“The notion that being in good physical shape portends lower death risk is by no means new, but we wanted to quantify that risk precisely by age, gender, and fitness level, and do so with an elegantly simple equation that requires no additional fancy testing beyond the standard stress test,” said Dr. Haitham Ahmed, a cardiology fellow at the Johns Hopkins University School of Medicine.
FIT Treadmill Scores ranged from negative 200 to positive 200 — participants over 0 had a lower mortality risk while participants under 0 has a higher mortality risk. Participants with a score between negative 100 and 0 had an 11 percent risk for dying in the next 10 years compared to three percent among participants with a scare between 0 and positive 100. Participants with a score lower than negative 100 had a 38 percent mortality risk compared to two percent among those who scored positive 100 or higher.
To determine which routinely collected exercise test variables most strongly correlate with survival and to derive a fitness risk score that can be used to predict 10-year survival.
Patients and Methods
This was a retrospective cohort study of 58,020 adults aged 18 to 96 years who were free of established heart disease and were referred for an exercise stress test from January 1, 1991, through May 31, 2009. Demographic, clinical, exercise, and mortality data were collected on all patients as part of the Henry Ford ExercIse Testing (FIT) Project. Cox proportional hazards models were used to identify exercise test variables most predictive of survival. A “FIT Treadmill Score” was then derived from the β coefficients of the model with the highest survival discrimination.
The median age of the 58,020 participants was 53 years (interquartile range, 45-62 years), and 28,201 (49%) were female. Over a median of 10 years (interquartile range, 8-14 years), 6456 patients (11%) died. After age and sex, peak metabolic equivalents of task and percentage of maximum predicted heart rate achieved were most highly predictive of survival (P<.001). Subsequent addition of baseline blood pressure and heart rate, change in vital signs, double product, and risk factor data did not further improve survival discrimination. The FIT Treadmill Score, calculated as [percentage of maximum predicted heart rate + 12(metabolic equivalents of task) – 4(age) + 43 if female], ranged from −200 to 200 across the cohort, was near normally distributed, and was found to be highly predictive of 10-year survival (Harrell C statistic, 0.811).
The FIT Treadmill Score is easily attainable from any standard exercise test and translates basic treadmill performance measures into a fitness-related mortality risk score. The FIT Treadmill Score should be validated in external populations.
Now do it.
But. But. But.