Submaximal VO2max estimate + percentile — Minneapolis.

Low cardiorespiratory fitness is the single strongest modifiable predictor of all-cause mortality, yet most adults have never had VO2max measured. Without a number and percentile, there is no baseline to train against or trend to track. North Minneapolis has been served for five decades by NorthPoint Health & Wellness Center, a federally qualified health center built specifically to close the well-documented gap in life expectancy and chronic-disease burden between Black and white Minnesotans, a gap a measured cardiorespiratory baseline is one small tool against.

Where

Community track / measured mile, Minneapolis, MN · Open the map

Pay

$200 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

PAR-Q+ resolved + protocol named + raw inputs (time, HR, mass, age) + estimated VO2max (ml/kg/min) + age/sex percentile + timestamped photo of course and HR readout

This is exactly what gets it approved. Nothing settles without it.

Level

entry

Open until

2026-10-14

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Bring

• GPS phone or measured 1-mile flat course (or a 12-inch step + metronome)
• heart-rate monitor (chest strap preferred; wrist acceptable)
• stopwatch
• PAR-Q+ readiness form

Steps

1. 1. Complete the PAR-Q+ readiness screen; if any exertion flag is positive, STOP and route to clinician clearance before testing.
2. 2. Record age, sex, body mass (kg), and resting heart rate after 5 min seated.
3. 3. Warm up 5 min at an easy pace.
4. 4. Rockport: walk 1 mile as fast as sustainable on a flat course; record finish time (min:sec) and immediate post-walk HR. YMCA step: step up-down on a 12-inch box at 96 beats/min for 3 min, then sit and record the 1-minute recovery HR.
5. 5. Estimate VO2max (ml/kg/min) with the protocol's validated equation from mass, age, sex, time, and HR.
6. 6. Convert the estimate to an age/sex percentile against the FRIEND reference and record METs.
7. 7. Photograph the course/step and the HR/time readout; log VO2max, percentile, protocol, and conditions into the proof record and sign it.
8. 8. Record any beta-blocker or other rate-controlling medication; if present, do not apply age-predicted %-max-HR zones or standard heart-rate thresholds — anchor intensity with RPE and the talk test instead.

What counts as done

• Completed PAR-Q+ readiness screen (no unresolved exertion flags)
• Protocol named (Rockport 1-mile walk or YMCA step) with raw inputs
• Estimated VO2max in ml/kg/min with the age/sex percentile
• Timestamped photo of the measured course/step and the HR/time readout

Proof is measured against these, not judged by taste.