Convert your real-world validation measures into a single observed-function score so you can compare
measured performance against the modeled Energy Score. This is a practical tracking score, not a clinically validated scale.
Pick the protocol version you actually used. Do not mix versions across visits in the same study if you can avoid it.
Used only to interpret raw grip strength in kilograms with sex-specific thresholds.
Enter the best measured grip value in lbs from the strongest hand. The calculator interprets this directly using sex-specific cut points.
Lower is better. Faster times now approach the top score asymptotically, so even a very fast result will usually land just under 100 rather than exactly at it.
Use this when the person holds the chair, pushes off the seat, or otherwise uses arm support. More support lowers the sit-to-stand score.
0 means no fatigue burden and 100 means maximal fatigue burden. Normalize your survey to this scale first.
Grip interpretation note:
This calculator now uses raw grip strength in pounds.
For practical interpretation, it anchors “low strength” near common sex-specific cut points used in the literature:
women around `35-40 lbs`, men around `60-65 lbs`.
Both grip and sit-to-stand now use asymptotic scoring, so exceptional performance approaches the maximum score without easily reaching a perfect 100.
Fatigue still needs to be converted to a 0 to 100 burden score.
Output
Measured Function Score
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Enter results to calculate
Component Scores
Applied Weights
The grip-strength version weights grip strength 40%, sit-to-stand 35%, and fatigue burden 25%.