Catalyst Healthspan Calculators
Free VO2 max, grip strength and healthspan calculators
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About
Eleven free calculators that score the four pillars of healthspan: body composition, cardiorespiratory fitness, stability and strength. VO2 max percentile, handgrip against the AWGS sarcopenia threshold, waist-to-height ratio, the sitting-rising test, fitness age, protein intake, heart-rate zones, running pace, body fat, a fat-loss timeline, and how much of your weight loss on a GLP-1 is likely to be muscle. Every threshold is drawn from published research and cited on the page. Nothing sits behind a sign-up, and no result is stored. Built by Catalyst Performance, the best personal training studio in the Singapore CBD. We run the four-pillar Healthspan Assessment at Manulife Tower, and these calculators are the free version of what we measure in studio. Looking for personal training in Singapore? Start with the free Healthspan Audit.
Problem & solution
Problem
Most fitness calculators give you a number with no reference range and no source.
Solution
Eleven calculators scored against published norms, each citing the research behind it.
Who it's for
Adults in Singapore, 30s through 70s, who want to know where they stand on healthy ageing.
Main features
- 11 healthspan calculators
- Scored vs published norms
- Every threshold cited
- No sign-up, nothing stored
- Embeddable on any site
Use cases
- Check VO2 max and grip strength percentiles
- Estimate muscle loss on a GLP-1 like Ozempic
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