KR20210052692A - 6 Minute Walking Test Assessment Using Inertial Sensor Assembly - Google Patents

6 Minute Walking Test Assessment Using Inertial Sensor Assembly Download PDF

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KR20210052692A
KR20210052692A KR1020190136373A KR20190136373A KR20210052692A KR 20210052692 A KR20210052692 A KR 20210052692A KR 1020190136373 A KR1020190136373 A KR 1020190136373A KR 20190136373 A KR20190136373 A KR 20190136373A KR 20210052692 A KR20210052692 A KR 20210052692A
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6mwt
sensor assembly
inertial sensor
evaluation method
measured
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이창기
홍재수
고정배
변태민
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한국생산기술연구원
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    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
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    • A61B5/112—Gait analysis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
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    • A—HUMAN NECESSITIES
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    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0219—Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches

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Abstract

According to the present invention, in a 6MWT (6 Minute Walking Test) evaluation method in which the inertial sensor assembly is mounted on a body of a subject to be measured, a 6MWT evaluation method using an inertial sensor assembly includes the steps of: (a) performing 6MWT on the subject to be measured, and extracting a sensor value of the inertial sensor assembly according to progress of the 6MWT; (b) deriving result data for a plurality of evaluation items by analyzing the sensor values of the inertial sensor assembly extracted by a step (a); and (c) evaluating walking ability and balance of the subject to be measured through the result data.

Description

관성센서 어셈블리를 활용한 6MWT 평가방법{6 Minute Walking Test Assessment Using Inertial Sensor Assembly}6 MWT Evaluation Method Using Inertial Sensor Assembly{6 Minute Walking Test Assessment Using Inertial Sensor Assembly}

본 발명은 6MWT(6 Minute Walking Test) 평가방법에 관한 것으로서, 보다 상세하게는 관성센서 어셈블리를 활용하여 측정 대상자에 대해 보다 다양한 보행능력 판단을 수행할 수 있도록 하는 6MWT 평가방법에 관한 것이다.The present invention relates to a 6MWT (6 Minute Walking Test) evaluation method, and more particularly, to a 6MWT evaluation method capable of performing a more diverse gait ability determination for a measurement subject using an inertial sensor assembly.

일반적으로 6MWT(6 Minute Walking Test)는 고령자 및 재활환자 등에게 적용되는 검사법으로서, 편평하고 단단한 바닥에서 측정 대상자를 6분 동안 가능한 많이 걷게 한 후, 그 누적거리를 측정하는 평가이다.In general, 6MWT (6 Minute Walking Test) is a test method applied to the elderly and rehabilitation patients, and is an evaluation that measures the cumulative distance after making the person to be measured walk as much as possible for 6 minutes on a flat and hard floor.

이와 같은 6MWT에서는 총 보행 누적거리와 시험 전/후의 혈압, 호흡 등을 측정하여 심혈관계, 순환계의 통합된 반응, 신경근 단위, 근육수준까지 검사가 가능한 평가 방법으로 널리 사용되고 있다.In such 6MWT, it is widely used as an evaluation method capable of measuring the total walking cumulative distance, blood pressure, and respiration before/after the test to test the integrated response of the cardiovascular and circulatory systems, neuromuscular units, and muscle levels.

다만, 현재까지의 6MWT은 단순히 총 보행 누적거리만을 고려하여 분석 결과를 제공하므로, 측정 대상자에 대한 보행능력 항목의 확장이 제한적이며, 이에 따라 보다 정밀한 분석 결과를 제공할 수 없다는 문제가 있다.However, since the 6MWT to date provides the analysis result by simply considering the total walking accumulated distance, there is a problem that the expansion of the gait ability item for the person to be measured is limited, and accordingly, a more precise analysis result cannot be provided.

따라서 이와 같은 문제점들을 해결하기 위한 방법이 요구된다.Therefore, a method for solving these problems is required.

한국공개특허 제10-2004-0013065호Korean Patent Publication No. 10-2004-0013065

본 발명은 상술한 종래 기술의 문제점을 해결하기 위하여 안출된 발명으로서, 6MWT 수행 과정 중 총 보행 누적거리 외에도 다양한 정보를 획득할 수 있도록 하여 측정 대상자에 대한 보행능력 항목을 확장시킬 수 있도록 하기 위한 목적을 가진다.The present invention is an invention conceived to solve the problems of the prior art described above, and it is an object to expand the gait ability item for a person to be measured by allowing various information to be acquired in addition to the total walking accumulated distance during the 6MWT execution process. Have.

본 발명의 과제들은 이상에서 언급한 과제들로 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The problems of the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

상기한 목적을 달성하기 위한 본 발명의 관성센서 어셈블리를 활용한 6MWT 평가방법은, 측정 대상자의 신체에 관성센서 어셈블리를 장착하여 진행하는 6MWT(6 Minute Walking Test) 평가방법에 있어서, 측정 대상자에 대해 6MWT를 진행하고, 6MWT 진행에 따른 관성센서 어셈블리의 센서값을 추출하는 (a)단계, (a)단계에 의해 추출된 관성센서 어셈블리의 센서값을 분석하여 복수 개의 평가항목에 대한 결과데이터를 도출하는 (b)단계 및 상기 결과데이터를 통해 측정 대상자의 보행 능력 및 균형을 평가하는 (c)단계를 포함한다.In the 6MWT evaluation method using the inertial sensor assembly of the present invention to achieve the above object, in the 6MWT (6 Minute Walking Test) evaluation method in which the inertial sensor assembly is mounted on the body of the measurement subject, After proceeding with 6MWT, the result data for a plurality of evaluation items are derived by analyzing the sensor values of the inertial sensor assembly extracted by steps (a) and (a) of extracting the sensor values of the inertial sensor assembly according to the progress of 6MWT. It includes step (b) and step (c) of evaluating the walking ability and balance of the measurement subject through the result data.

그리고 상기 복수 개의 평가항목은, 신체 상태에 대한 골반 각도 변화, 측정 대상자의 평균 속도, 보조, 보행 사이클 유지시간 및 다리의 정지/흔들림 비율 중 적어도 어느 하나 이상을 포함할 수 있다.In addition, the plurality of evaluation items may include at least one or more of a pelvic angle change with respect to a physical condition, an average speed of a subject to be measured, assistance, a walking cycle maintenance time, and a stop/shake ratio of the leg.

또한 상기 관성센서 어셈블리는 자이로스코프 센서, 지자계 센서 및 가속도 센서 중 적어도 어느 하나를 포함할 수 있다.In addition, the inertial sensor assembly may include at least one of a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor.

상기한 과제를 해결하기 위한 본 발명의 관성센서 어셈블리를 활용한 6MWT 평가방법은, 관성센서 어셈블리를 활용하여 측정 대상자에 대해 보다 다양한 보행능력 판단을 수행할 수 있는 장점을 가진다.The 6MWT evaluation method using the inertial sensor assembly of the present invention for solving the above problems has the advantage of performing a wider variety of gait ability determinations on the measurement target by using the inertial sensor assembly.

본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

도 1은 측정 대상자가 6MWT를 수행하는 모습을 나타낸 도면;
도 2는 본 발명의 일 실시예에 따른 6MWT 평가방법의 각 과정을 나타낸 도면;
도 3은 본 발명의 일 실시예에 따른 6MWT 평가방법 중 관성센서 어셈블리를 통해 획득한 측정 대상자의 보행속도 그래프;
도 4는 본 발명의 일 실시예에 따른 6MWT 평가방법 중 관성센서 어셈블리를 통해 획득한 측정 대상자의 보조 그래프;
도 5는 본 발명의 일 실시예에 따른 6MWT 평가방법 중 관성센서 어셈블리를 통해 획득한 측정 대상자의 골반각도정보를 나타낸 그래프; 및
도 6는 본 발명의 일 실시예에 따른 6MWT 평가방법을 통해 분석된 측정 대상자의 보행 균형도를 나타낸 그래프이다.1 is a diagram showing a state in which a measurement subject performs 6MWT;
2 is a view showing each process of a 6MWT evaluation method according to an embodiment of the present invention;
3 is a graph of a walking speed of a measurement subject obtained through an inertial sensor assembly in a 6MWT evaluation method according to an embodiment of the present invention;
4 is an auxiliary graph of a measurement subject acquired through an inertial sensor assembly in a 6MWT evaluation method according to an embodiment of the present invention;
5 is a graph showing pelvic angle information of a subject to be measured obtained through an inertial sensor assembly in a 6MWT evaluation method according to an embodiment of the present invention; And
6 is a graph showing a walking balance of a measurement subject analyzed through a 6MWT evaluation method according to an embodiment of the present invention.

이하 본 발명의 목적이 구체적으로 실현될 수 있는 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 본 실시예를 설명함에 있어서, 동일 구성에 대해서는 동일 명칭 및 동일 부호가 사용되며 이에 따른 부가적인 설명은 생략하기로 한다.Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings. In the description of the present embodiment, the same names and the same reference numerals are used for the same components, and additional descriptions thereof will be omitted.

도 1은 측정 대상자가 6MWT를 수행하는 모습을 나타낸 도면이다.1 is a diagram showing a state in which a measurement subject performs 6MWT.

도 1에 도시된 바와 같이, 6MWT(6 Minute Walking Test)는 고령자 및 재활환자 등에게 적용되는 검사법으로서, 편평하고 단단한 바닥에서 측정 대상자를 6분 동안 가능한 많이 걷게 한 후, 그 누적거리를 측정하게 된다.As shown in Figure 1, 6MWT (6 Minute Walking Test) is a test method applied to the elderly and rehabilitation patients, and after making the person to be measured walk as much as possible for 6 minutes on a flat and hard floor, the accumulated distance is measured. do.

본 실시예에서는 약 30m2의 공간 내에서 측정 대상자가 보행을 수행하도록 하였다.In this example, the measurement subject was allowed to walk within a space of about 30 m 2.

또한 본 실시예는 측정 대상자의 신체에 관성센서 어셈블리를 장착하여 6MWT를 진행하는 것으로 하였다. 여기서 상기 관성센서 어셈블리는 서로 다른 종류의 복수의 센서를 포함할 수 있으며, 본 실시예의 경우 상기 관성센서 어셈블리는 자이로스코프 센서, 지자계 센서 및 가속도 센서 중 적어도 어느 하나를 포함하는 것으로 하였다.In addition, in this embodiment, it is assumed that 6MWT is performed by mounting the inertial sensor assembly on the body of the person to be measured. Here, the inertial sensor assembly may include a plurality of different types of sensors, and in the present embodiment, the inertial sensor assembly includes at least one of a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor.

도 2는 본 발명의 일 실시예에 따른 6MWT 평가방법의 각 과정을 나타낸 도면이다.2 is a diagram showing each process of a 6MWT evaluation method according to an embodiment of the present invention.

도 2에 도시된 바와 같이, 본 발명의 일 실시예에 따른 6MWT 평가방법은, 측정 대상자에 대해 6MWT시험을 진행하고, 6MWT시험 진행에 따른 관성센서 어셈블리의 센서값을 추출하는 (a)단계와, (a)단계에 의해 추출된 관성센서 어셈블리의 센서값을 분석하여 복수 개의 평가항목에 대한 결과데이터를 도출하는 (b)단계와, 상기 결과데이터를 통해 측정 대상자의 보행 능력 및 균형을 평가하는 (c)단계를 포함한다.As shown in FIG. 2, the 6MWT evaluation method according to an embodiment of the present invention includes a step (a) of performing a 6MWT test on a measurement subject, and extracting a sensor value of the inertial sensor assembly according to the 6MWT test. , (b) of deriving result data for a plurality of evaluation items by analyzing the sensor values of the inertial sensor assembly extracted by step (a), and evaluating the walking ability and balance of the measurement subject through the result data. It includes step (c).

즉 상기 (a)단계에서는 측정 대상자가 보행을 수행하는 과정에서 시간의 흐름에 따른 자이로스코프 센서, 지자계 센서 및 가속도 센서 중 적어도 어느 하나에 대한 각각의 센서값을 획득하게 된다.That is, in the step (a), each sensor value of at least one of a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor is acquired according to the passage of time in the process of the measurement subject's walking.

그리고 상기 (b)단계에는, 상기 (a)단계에 의해 추출된 관성센서 어셈블리의 센서값을 분석하여 복수 개의 평가항목에 대한 결과데이터를 도출하 수 있으며, 이때 본 실시예에서 상기 복수 개의 평가항목은, 신체 상태에 대한 골반 각도 변화, 측정 대상자의 평균 속도, 보조, 보행 사이클 유지시간 및 다리의 정지/흔들림 비율 중 적어도 어느 하나 이상을 포함할 수 있다.And in the step (b), it is possible to derive result data for a plurality of evaluation items by analyzing the sensor values of the inertial sensor assembly extracted by the step (a), and in this embodiment, the plurality of evaluation items May include at least one or more of a pelvic angle change with respect to a physical condition, an average speed of a subject to be measured, assistance, a walking cycle maintenance time, and a stop/shake ratio of the leg.

예컨대, 도 3에는 본 발명의 일 실시예에 따른 6MWT 평가방법 중 관성센서 어셈블리를 통해 획득한 측정 대상자의 시간 흐름에 따른 보행속도 그래프가 도시되며, 도 4에는 본 발명의 일 실시예에 따른 6MWT 평가방법 중 관성센서 어셈블리를 통해 획득한 측정 대상자의 시간 흐름에 따른 보조 그래프가 도시된다.For example, FIG. 3 shows a graph of the walking speed of a measurement subject over time obtained through an inertial sensor assembly among a 6MWT evaluation method according to an embodiment of the present invention, and FIG. 4 shows a 6MWT according to an embodiment of the present invention. Among the evaluation methods, an auxiliary graph according to the time flow of the measurement subject acquired through the inertial sensor assembly is shown.

또한 도 5는 본 발명의 일 실시예에 따른 6MWT 평가방법 중 관성센서 어셈블리를 통해 획득한 측정 대상자의 골반각도정보를 나타낸 그래프로서, 좌측 골반 및 우측 골반에 대한 Tilt축, Obliquity축, Rotation축의 시간 흐름에 따른 변화 경향을 확인할 수 있다.In addition, FIG. 5 is a graph showing the pelvic angle information of a measurement subject obtained through an inertial sensor assembly among the 6MWT evaluation method according to an embodiment of the present invention. Times of the Tilt axis, Obliquity axis, and Rotation axis for the left and right pelvis. You can check the trend of change according to the flow.

이와 같이 본 발명은 자이로스코프 센서, 지자계 센서 및 가속도 센서 중 적어도 어느 하나를 포함하는 상기 관성센서 어셈블리를 통해 측정 대상자에 대한 총 보행 시간 외에도, 신체 상태에 대한 골반 각도 변화, 측정 대상자의 평균 속도, 보조, 보행 사이클 유지시간 및 다리의 정지/흔들림 비율 중 적어도 어느 하나 이상의 정보를 도출할 수 있다.As described above, in addition to the total walking time for the subject to be measured, the present invention includes a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor, in addition to the total walking time, the pelvic angle change with respect to the physical condition, and the average speed of the subject to be measured. , Assistance, walking cycle maintenance time, and at least one or more information of the stop/shake ratio of the leg may be derived.

그리고 도 6는 본 발명의 일 실시예에 따른 6MWT 평가방법을 통해 분석된 측정 대상자의 보행 균형도를 나타낸 그래프로서, 전술한 측정 대상자의 신체 상태에 대한 골반 각도 변화, 측정 대상자의 평균 속도, 보조, 보행 사이클 유지시간 및 다리의 정지/흔들림 비율 중 적어도 어느 하나 이상의 정보를 통해 최종적인 보행 균형도를 도출한 것이다.And Figure 6 is a graph showing the gait balance of the measurement subject analyzed through the 6MWT evaluation method according to an embodiment of the present invention, the pelvic angle change with respect to the physical condition of the measurement subject, average speed of the measurement subject, and assistance , The final walking balance is derived through information of at least any one or more of the walking cycle maintenance time and the stop/shake ratio of the legs.

이와 같이, 본 발명은 관성센서 어셈블리를 활용하여 측정 대상자에 대해 보다 다양한 보행능력 판단을 수행할 수 있는 장점을 가진다.As described above, the present invention has the advantage of performing a wider variety of gait ability determinations for a person to be measured using the inertial sensor assembly.

이상과 같이 본 발명에 따른 바람직한 실시예를 살펴보았으며, 앞서 설명된 실시예 이외에도 본 발명이 그 취지나 범주에서 벗어남이 없이 다른 특정 형태로 구체화될 수 있다는 사실은 해당 기술에 통상의 지식을 가진 이들에게는 자명한 것이다. 그러므로, 상술된 실시예는 제한적인 것이 아니라 예시적인 것으로 여겨져야 하고, 이에 따라 본 발명은 상술한 설명에 한정되지 않고 첨부된 청구항의 범주 및 그 동등 범위 내에서 변경될 수도 있다.As described above, preferred embodiments according to the present invention have been examined, and the fact that the present invention can be embodied in other specific forms without departing from its spirit or scope other than the above-described embodiments is known to those skilled in the art. It is self-evident to them. Therefore, the above-described embodiments are to be regarded as illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

Claims (3)

측정 대상자의 신체에 관성센서 어셈블리를 장착하여 진행하는 6MWT(6 Minute Walking Test) 평가방법에 있어서,
측정 대상자에 대해 6MWT를 진행하고, 6MWT 진행에 따른 관성센서 어셈블리의 센서값을 추출하는 (a)단계;
(a)단계에 의해 추출된 관성센서 어셈블리의 센서값을 분석하여 복수 개의 평가항목에 대한 결과데이터를 도출하는 (b)단계; 및
상기 결과데이터를 통해 측정 대상자의 보행 능력 및 균형을 평가하는 (c)단계;
를 포함하는 6MWT 평가방법.In the 6MWT (6 Minute Walking Test) evaluation method in which an inertial sensor assembly is mounted on the body of the person to be measured,
(A) step of performing 6MWT for the measurement subject and extracting a sensor value of the inertial sensor assembly according to the progress of 6MWT;
step (b) of analyzing the sensor values of the inertial sensor assembly extracted in step (a) to derive result data for a plurality of evaluation items; And
(C) evaluating the walking ability and balance of the measurement subject through the result data;
6MWT evaluation method comprising a. 제1항에 있어서,
상기 복수 개의 평가항목은,
신체 상태에 대한 골반 각도 변화, 측정 대상자의 평균 속도, 보조, 보행 사이클 유지시간 및 다리의 정지/흔들림 비율 중 적어도 어느 하나 이상을 포함하는 6MWT 평가방법.The method of claim 1,
The plurality of evaluation items,
A 6MWT evaluation method comprising at least any one or more of a pelvic angle change with respect to a physical condition, an average speed of a subject to be measured, assistance, a walking cycle maintenance time, and a stop/shake ratio of a leg. 제1항에 있어서,
상기 관성센서 어셈블리는 자이로스코프 센서, 지자계 센서 및 가속도 센서 중 적어도 어느 하나를 포함하는 6MWT 평가방법.The method of claim 1,
The inertial sensor assembly is a 6MWT evaluation method comprising at least one of a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040013065A (en) 2004-01-19 2004-02-11 한상현 Physical fitness evaluation system for the aged persons

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