Enright 1998 predicted six-minute walk distance (meters) from sex, age 40-80, he
Enright 1998 predicted six-minute walk distance (meters) from sex, age 40-80, height_cm, and weight_kg (Table 3 height/weight: male 7.57H−5.02age−1.76W−309; female 2.11H−2.29W−5.78age+667). Reports predicted_m and lln_m (minus 153 m men or 139 m women). Optional walked_m (0-1500) yields percent_predicted. Not a timed walk, BMI-equation path, or 80%/400 m class. Not a medical device.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
253 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/6mwd
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 253 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age": 50,
"height_cm": 170,
"height_in": 66.9291,
"sex": "male",
"walked_m": 400,
"weight_kg": 70,
"weight_lb": 154.324
},
{
"age": 50,
"height_cm": 170,
"height_in": 66.9291,
"sex": "male",
"walked_m": 400,
"weight_kg": 70,
"weight_lb": 154.324
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age": {
"description": "Age in years (integer 40-80). Enright 1998 derivation range.",
"type": "integer"
},
"height_cm": {
"description": "Height in centimeters (50-250). Provide height_cm or height_in.",
"type": "number"
},
"height_in": {
"description": "Height in inches (20-98). Converted as cm = in \u00d7 2.54.",
"type": "number"
},
"sex": {
"description": "Sex used by Enright 1998 Table 3 (separate male and female height/weight equations).",
"enum": [
"female",
"male"
],
"type": "string"
},
"walked_m": {
"description": "Optional distance walked in meters (0-1500). When present, percent_predicted = walked_m / predicted_m \u00d7 100. magent does not time the walk.",
"type": "number"
},
"weight_kg": {
"description": "Weight in kilograms (1-500). Provide weight_kg or weight_lb.",
"type": "number"
},
"weight_lb": {
"description": "Weight in pounds (2-1100). Converted as kg = lb \u00d7 0.45359237.",
"type": "number"
}
},
"required": [
"sex",
"age"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}