ISO 24227:2023 PDF

Name: ISO 24227:2023 — Validation protocol for walking speed as extracted from various sensor systems that measure human body motion for the healthcare sector
SKU: ISO 24227:2023
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Validation protocol for walking speed as extracted from various sensor systems that measure human body motion for the healthcare sector

Название (английский):

ISO 24227:2023

Validation protocol for walking speed as extracted from various sensor systems that measure human body motion for the healthcare sector

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 26 октября 2023 г.
Издание:: ISO IS 24227 edition 1 version 1
ICS:: 13.180

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Описание (английский):

This document provides a procedure for the standard validation and reporting protocol of walking speed measurements by technological sensor systems compared with the values provided by the reference method, namely walking speed as measured by a tape measure and a stopwatch. It does not address the detailed or specific uses of various technological sensor systems in healthcare.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 24227:2023 specifies a standard validation and reporting protocol for measuring walking speed extracted from various sensor systems that capture human body motion in the healthcare sector. The standard defines how to compare walking speed from technological sensor systems (e.g., wearable accelerometers, depth sensors, GPS-based systems) with the reference method - walking speed measured using a tape measure and a stopwatch - and sets out study, measurement and reporting requirements to enable consistent accuracy assessment.

Key topics and requirements

Validation study design

Simultaneous measurement by the sensor system and the reference method for each trial.
Minimum of 50 data points covering the full walking-speed range of the target population (or equivalent repeated trials).
Walkway length guidance (practical minimum about 10 m) with ~3 m acceleration/deceleration zones so steady-speed intervals are recorded.

Measurer qualifications

Measurers should be trained under clinical supervision and by sensor-system representatives. Preferably the same measurer for all trials; report inter-rater reliability if multiple measurers are used (e.g., intraclass correlation).

Instrumentation and calibration

Stopwatch and tape measure must be traceable with an individually serial-numbered calibration certificate meeting ISO/IEC 17025 requirements.

Data analysis and metrics

Compute per-trial difference (d) between sensor and reference speeds, root-mean-square error (RMSE), 95% confidence interval of the mean, and measurement bias.
Provide Bland–Altman plots to characterise bias and limits of agreement.

Reporting

Use the provided Annex A template and sample report (Annex B). Required items include participant demographics, tested speed range, environment, sensor type/location, hardware/software versions, mean/SDs, RMSE, 95% CI, and Bland–Altman results.

Applications and who uses it

Manufacturers of wearable and environment-embedded motion sensors use ISO 24227:2023 to validate and demonstrate walking-speed accuracy against the clinical reference method.

Clinical researchers and rehabilitation clinicians use the protocol to evaluate sensor performance before deploying systems for patient monitoring or trials.

Ergonomists and occupational health professionals who need validated walking-speed data for workplace assessments and fatigue indices.

Regulators and procurement teams can rely on standardized validation reports when comparing systems.

Keywords: ISO 24227:2023, walking speed validation, sensor systems, healthcare, reference method, RMSE, Bland–Altman, accelerometer, GPS, depth sensor, validation protocol.

ISO 24227:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and who uses it

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