Max Heart Rate (HRmax))
- Age related: HRmax(bpm) = 220 – Age (yrs)
- Tanaka Equation: HRmax(bpm) = 208 − (0.7 × age)
Target Heart Rate (THR)
- Age based: THR = %intensity * HRmax
- Karvonen Equation: THR = ((HRmax − HRrest) × % intensity) + HRrest
Age Predicted Peak Aerobic Capacity for Healthy Adults (METs)
- Sedentary: METs = 16.6 – (0.16 x Age)
- Active: METs = 18.7 – (0.15 x Age)
Morris CK et al, Nomogram based on metabolic equivalents and age for assessing aerobic exercise capacity in men. J Am Coll Cardiol. 1993 Jul;22(1):175-82.
ACSM Metabolic Equations
Walking
VO2 (mL . kg-1 . min-1) = (0.1 . S) + (1.8 . S . G) + 3.5 mL. kg-1.min-1
Running
VO2 (mL . kg-1 . min-1) = (0.2 . S) + (0.9 . S . G) + 3.5 mL. kg-1.min-1
Leg Cycling
VO2 (mL . kg-1 . min-1) = 1.8(work rate) / (BM) + 3.5 mL. kg-1.min-1+ 3.5 mL. kg-1.min-1
Arm Cycling
VO2 (mL . kg-1 . min-1) = 3(work rate) / (BM) + 3.5 mL. kg-1.min-1
Stepping
VO2 (mL . kg-1 . min-1) = (0.2 . f) + (1.33 . 1.8 . H . f) + 3.5 mL. kg-1.min-1
VO2 is gross oxygen consumption in (mL)/(kg x minute)
S is speed in meters/minute
BM is body mass (kg)
G is the percent grade expressed as a fraction
Work rate (kg x metes)/min
f is the stepping frequency in minutes
H is step height in meters
YMCA Test
Cahalin Formula for 6MWT