Health

Grip Strength Dynamometer & Rate of Force Development (RFD) Tutor

Interpret Jamar / Camry / EH101 grip readings against age/sex population norms (Massy-Westropp 2011: z-score, percentile, % of norm), sarcopenia weakness cutoffs (EWGSOP2, AWGS, Fried), the 10% asymmetry rule; compute rate of force development from force-time curves (0–50…0–250 ms windows, peak RFD, impulse, time-to-peak per Maffiuletti 2016); and repeated-trial fatigue index.

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'http://127.0.0.1:3003/en/api/tools/grip-strength-dynamometer-and-rate-of-force-development-tutor' \
  -H 'Content-Type: application/json' \
  -d '{"mode":"norms","age":42,"sex":"male","unit":"kg","dominantHand":"right","rightReading":52,"leftReading":48,"bodyMassKg":78,"forceData":"","forceUnit":"newtons","trialsData":""}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST http://127.0.0.1:3003/en/api/tools/grip-strength-dynamometer-and-rate-of-force-development-tutor

Parameters

Name	Type	Required	Description
mode	select	No	—
age	number	No	—
sex	select	No	—
unit	select	No	—
dominantHand	select	No	—
rightReading

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-grip-strength-dynamometer-and-rate-of-force-development-tutor": {
      "name": "grip-strength-dynamometer-and-rate-of-force-development-tutor",
      "description": "Interpret Jamar / Camry / EH101 grip readings against age/sex population norms (Massy-Westropp 2011: z-score, percentile, % of norm), sarcopenia weakness cutoffs (EWGSOP2, AWGS, Fried), the 10% asymmetry rule; compute rate of force development from force-time curves (0–50…0–250 ms windows, peak RFD, impulse, time-to-peak per Maffiuletti 2016); and repeated-trial fatigue index.",
      "baseUrl": "http://127.0.0.1:3003/mcp/sse?toolId=grip-strength-dynamometer-and-rate-of-force-development-tutor",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "grip-strength-dynamometer-and-rate-of-force-development-tutor",
    "arguments": {
  "mode": "norms",
  "age": 42,
  "sex": "male",
  "unit": "kg",
  "dominantHand": "right",
  "rightReading": 52,
  "leftReading": 48,
  "bodyMassKg": 78,
  "forceData": "",
  "forceUnit": "newtons",
  "trialsData": ""
}
  }
}

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