{"slug":"saylorinnovations-com-api-health-one-rep-max-ef9c04","title":"Estimated one-rep max from any submaximal set using six formulas, the range betw","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/health/one-rep-max","category":"other","description":"Estimated one-rep max from any submaximal set using six formulas, the range between them, and a percentage table of training weights and reps.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":277,"reported_calls_30d":0,"reported_payers_30d":0,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"reps":"6","weight":"185"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"reps":{"description":"repetitions completed, 1-30","type":"string"},"weight":{"description":"weight lifted in any unit","type":"string"}},"required":["weight","reps"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"estimated_one_rep_max":{"description":"Average of the formula estimates","type":"number"},"formulas":{"description":"Estimate from each formula","properties":{"brzycki":{"description":"Brzycki estimate, null at 37 reps or more","type":["number","null"]},"epley":{"description":"Epley estimate","type":["number","null"]},"lombardi":{"description":"Lombardi estimate","type":["number","null"]},"mayhew":{"description":"Mayhew estimate","type":["number","null"]},"oconner":{"description":"O'Conner estimate","type":["number","null"]},"wathan":{"description":"Wathan estimate","type":["number","null"]}},"type":"object"},"note":{"description":"Plain-language caveat about how to read and use the result","type":"string"},"percentage_table":{"description":"Training weights as percentages of the estimated max","items":{"properties":{"approx_reps":{"description":"Approximate repetitions possible at that weight","type":["number","null"]},"percent":{"description":"Percent of one-rep max","type":["number","null"]},"weight":{"description":"Weight at that percent","type":["number","null"]}},"type":"object"},"type":"array"},"range_high":{"description":"Highest formula estimate","type":"number"},"range_low":{"description":"Lowest formula estimate","type":"number"},"reliability":{"description":"How trustworthy the estimate is for this rep count","type":"string"},"reps":{"description":"Repetitions completed","type":"number"},"source":{"description":"Where the data or formula comes from","type":"string"},"weight":{"description":"Weight lifted","type":"number"}},"required":["estimated_one_rep_max","percentage_table"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-20","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":277,"error":null}],"description_full":"Estimated one-rep max from any submaximal set using six formulas, the range between them, and a percentage table of training weights and reps.","last_updated":"2026-10-20T14:47:46.801Z","schemes":["exact"]}