ISO/TR 10687:2022 機械的振動—全身振動を参照した着座姿勢の説明と決定 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 4, Human exposure to mechanical vibration and shock.

This second edition cancels and replaces the first edition (ISO/TR 10687:2012) which has been technically revised.

This edition was created to clarify conventions and measurements and was updated with some of the latest research results.

Introduction

Seated persons exposed to whole-body vibration carry a risk for musculoskeletal problems such as low-back problems and for spinal degeneration which is most likely increased by unfavourable postures. However, the biomechanical mechanism of this increase is not fully understood.

It is therefore necessary, as a first step, to determine the posture and ergonomic environment of a seated person with special focus on the spine.

This document is offering a collection of ideas on how to measure postures which are dynamic. To this end, this document summarizes descriptive quantities that

• are likely to be relevant for the assessment of adverse health effects due to whole-body vibration and unfavourable seated posture,
• can be determined using a variety of methods,
• are in accordance with the description of static, unfavourable seated postures as far as angles of body segments are concerned, and
• include additional information, e.g. the presence of arm- or backrests.

The whole set of quantities and conventions used can be reported in order to

• facilitate the comparison of seated postures,
• be able to compare different methods for the determination of the seated posture, and
• permit further investigation, e.g. in biomechanical laboratories, on the basis of the determined seated postures.

Due to limitations of the applied assessment methods, it might be necessary to combine different methods in order to be able to report a complete list of quantities.

This document does not specify sampling strategies or evaluation methods.

1 Scope

This document summarizes descriptive quantities for those responsible (e.g. scientists, safety engineers) for determination of postures for a seated person who is exposed to whole-body vibration. It is the intention that the results of different methods can be easily related to these quantities and that they allow for a common terminology between practitioners. The focus of this document is to offer a collection of ideas on how to measure postures in practice. The postures determined can also be used as a basis for further investigation or as a means of comparison for different methods. Although some of the approaches described here can be applied to standing or recumbent positions, additional considerations are likely to be required in these cases.

Additionally, this document deals with dynamic postures where body angles or associated movements are determined visually or by measuring points on the skin or clothing.

This document does not specify sampling strategies or evaluation methods.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography