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One-Rep Max

POST
/v1/tools/one-rep-max

Estimate 1RM from a submaximal set via Epley, Brzycki, Lombardi, Wathan, O’Conner, and Mayhew; returns a %1RM load chart.

object
weight
required
object
value
required
number
unit
string
default: kg
Allowed values: kg lb
reps
required
integer
<= 20
methods
Any of:
Array<string>
Example
{
"weight": {
"value": 100,
"unit": "kg"
},
"reps": 5
}

One-Rep Max result

object
results
required
Array<object>
object
method
required
string
value
required
number
unit
required
string
detail
object
key
additional properties
consensus
required
object
mean
required
number
median
required
number
min
required
number
max
required
number
n
required
integer
percent_table
required
Array<object>
object
percent
required
number
load
required
number

Inputs valid but semantically impossible, or a required method’s inputs are missing.

object
error
required
object
type
required
string
message
required
string
details

Input failed validation (Zod).

object
error
required
object
type
required
string
message
required
string
details