New portable instrument for long-term ambulatory monitoring of posture change using miniature electro-magnetic inclinometers

Tanaka, Shinobu; Yamakoshi, K.; Rolfe, P.

doi:10.1007/bf02512539

Cited by 24 publications

(13 citation statements)

References 8 publications

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“…In order to correct the accelerometer output for the gravitational component, information about the orientation of the sensor within the field of gravity should be available throughout the measurement period. This requires the synchronous recording of the orientation, for example with goniometers or inclinometers (SMEATHERS, 1989;TANAKA et al, 1994), or with film and video (LAFORTUNE and HENNIG, 1991).…”

Section: Introductionmentioning

confidence: 99%

Effects of placement and orientation of body-fixed accelerometers on the assessment of energy expenditure during walking

Bouten

Sauren

Verduin

et al. 1997

Med. Biol. Eng. Comput.

122

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Section: Introductionmentioning

confidence: 99%

Effects of placement and orientation of body-fixed accelerometers on the assessment of energy expenditure during walking

Bouten

Sauren

Verduin

et al. 1997

Med. Biol. Eng. Comput.

122

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“…Besides these innovative approaches described here, we have also continued developing ambulatory monitoring systems suitable for both clinical and home use, focusing particularly on the acquisition of data for the evaluation of cardiovascular hemodynamics and human activity. Following our earlier developments of ambulatory cardiovascular hemodynamic (20)(21)(22)(23)(24) and activity monitoring systems, (25)(26)(27)(28) we have recently improved these two systems for more practical use. (7,8) Detailed operational performance, accuracy, and reliability of the two have already been successfully demonstrated and reported in the literature.…”

Section: Ambulatory Cardiovascular Hemodynamic and Activity Monitoringmentioning

confidence: 99%

“…(7,8) Detailed operational performance, accuracy, and reliability of the two have already been successfully demonstrated and reported in the literature. (7,8,(20)(21)(22)(23)(24)(25)(26)(27)(28) Brief descriptions of each system are therefore given below.…”

Section: Ambulatory Cardiovascular Hemodynamic and Activity Monitoringmentioning

confidence: 99%

“…With the aim of improving the quality of life for these persons, we have developed a portable and handy device for monitoring postural changes and activities by measuring the trunk, thigh, and calf angles with respect to the gravitational direction. (25)(26)(27)(28) This device has recently been improved to make it more convenient for rehabilitation training as well as for collecting a daily record of activity scenarios. (8) The principle of the measurement of posture together with walking speed is quite simple, as shown respectively in the left and the right panels of Fig.…”

Section: Human Posture and Activity Monitoringmentioning

confidence: 99%

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Current Status of Noninvasive Bioinstrumentation for Healthcare

2011

Sensors and Materials

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In the so-called "super-aging society," noninvasive healthcare monitoring has been increasingly required as a possible scheme for preventive medicine, early diagnosis, and timely treatment of lifestyle-related diseases. As contributions towards the development of the most desirable aim of achieving ubiquitous healthcare monitoring, two promising systems, "ambulatory or wearable physiological monitoring" and "nonconscious physiological monitoring," which have recently been developed through modern technological advances, are introduced in this paper. Each of these two monitoring techniques appears to have the potential to contribute to the fields of personal healthcare, medical care, and rehabilitation among others. Nevertheless, further comprehensive studies will still be required to realize this potential and thereby achieve an advanced and truly practical approach. This is also discussed in this paper.

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“…On the other hand, we developed a portable device measuring the trunk, thigh and calf angle to the gravitational direction to improve of quality of life for the elderly persons [9]. At the beginning of development, we used miniature electromagnetic inclinometers to measure angles, but had problems with limited measurement range and inertial artifacts of the weight built in the sensor.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Wearable Monitoring System for Posture Changes and Activities and its Application to Rehabilitation

et al. 2009

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Abstract-In order to evaluate the efficacy of rehabilitation for persons with hemiplegia, a therapist usually makes judgment by directly observing posture changes, walking speed, activities not only in hospital, but also during daily living. Therefore, quantitative assessment of activities is most desirable. From this viewpoint, we have developed a device for ambulatory monitoring of posture changes, walking speed and activity scenario and evaluated its measurement accuracy by simultaneous recordings of a digital video camera. In order to investigate its applicability to a patient's activity monitoring, we have further developed a new monitoring system which can display static and dynamic motion pictures as well as detailed angle changes of the trunk, thigh and calf. This system makes a therapist to easily understand the patient's motion during training in rehabilitation center and activities during daily living. By evaluation on 6 patients with hemiplegia, the patients' motions were successfully monitored during walking in the rehabilitation center and daily living at their own home. The results clearly demonstrated that the system could detect detailed motion characteristics, indicating that the system appears useful for evaluating quantitatively the efficacy of rehabilitation.

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New portable instrument for long-term ambulatory monitoring of posture change using miniature electro-magnetic inclinometers

Cited by 24 publications

References 8 publications

Effects of placement and orientation of body-fixed accelerometers on the assessment of energy expenditure during walking

Effects of placement and orientation of body-fixed accelerometers on the assessment of energy expenditure during walking

Current Status of Noninvasive Bioinstrumentation for Healthcare

Development of a New Wearable Monitoring System for Posture Changes and Activities and its Application to Rehabilitation

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