Masahiko Sato
Biographic Data
| ID | 3830486 |
|---|---|
| NAME | Masahiko Sato |
| GIVEN NAMES | Masahiko |
| FAMILY NAME | Sato |
| SIGNATURE | SATO M |
| AFFILIATIONS | Department of Ergonomics, Kyushu Institute for Design Research |
| ORCID | 0000-0002-5611-4483 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 13 |
| WORKS AS AUTHOR | 27 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1964 |
| LATEST PUBLICATION YEAR | 2008 |
| H-INDEX | 2 |
Severe developmental defects of enamel in a human skeleton of the Final Jomon age from the Nakazawahama shell-mound, Iwate, Japan
In an adult human skeleton of the Final Jomon age excavated at the Nakazawahama shell-mound in Iwate Prefecture, northeastern Japan, grooved enamel defects (about 2 mm in width) were observed circumferentially around the dental crowns of the upper left central incisor, upper right lateral incisor, and upper right canine. Observations of the crown surface using a stereomicroscope and evaluations of soft X-ray images revealed severe developmental d…
Prospect of Manufacturing and Design Based on Physiological Polymorphism
Modern manufacturing and design should satisfy not only the requirements of high cost performance but also of the user. Besides that, the social environment which surrounds manufacturing is rapidly changing depending on new technologies. To create future products with user satisfaction, the effective use of human physiological data is essential. This is where knowledge of physiological anthropology can be applied. Physiological anthropologists ha…
Evaluating the Relationships between the Postural Adaptation of Patients with Profound Cerebral Palsy and the Configuration of the Seating Buggy's Seating Support Surface
We are currently investigating the physiological polymorphism of wheelchair users with profound cerebral palsy and the properties of the Seating Buggy (developed by S. Nishimura, 1998) to clarify important and general elements of wheelchairs for widespread use. Cerebral palsy is a diagnostic term used to describe a group of motor syndromes resulting from disorders in early brain development. Recently, it has been shown that the Seating Buggy prod…
Physiological Effects of Shinrin-yoku (Taking in the Atmosphere of the Forest)—Using Salivary Cortisol and Cerebral Activity as Indicators
The purpose of this study is to examine the physiological effects of Shinrin-yoku (taking in the atmosphere of the forest). The subjects were 12 male students (22.8+/-1.4 yr). On the first day of the experiments, one group of 6 subjects was sent to a forest area, and the other group of 6 subjects was sent to a city area. On the second day, each group was sent to the opposite area for a cross check. In the forenoon, the subjects were asked to walk…
Physiological Anthropology Design
With the recent globalization of industrial products, there is doubt as to whether the methodology of Physiological Anthropology has also been standardized. The purpose of this study is to assess signs of standardization through a comparative analysis of Physiological Anthropology design in Germany and Japan. This survey investigates its characteristics through four factors: comfort, usability, sensation and aesthetics. Both nations regard the fi…
The Influence of Clothings on the Lower Critical Temperature
This paper describes the effect of clothing insulation on the lower critical temperature. Ten young adult females assumed reclining position at 12°C for one and half hour. The lower critical temperature was estimated at 0.43clo, 0.67clo, 0.87clo, 1.25clo, and 1.75clo conditions according to the intersect method. The regression equation of the lower critical temperature on the do value was LCT=31, 6-5.861, where LCT is the lower critical temperatu…
The Effect of Air Temperature on Maximal Oxygen Intake
The purpose of this study was to investigate the effect of air temperature on maximal oxygen intake. Ten adult males were used as subjects. The maximal oxygen intake was measured at 10°C, 20°C, 30°C, 40°C, and 50°C of air temperature, all at 50% of relative humidity. The largest value of maximal oxygen intake was obtained at an air temperature of 30°C and was significantly greater than the value at 20°C and 40°C. A polynomial equation was used to…
The Lower and Upper Critical Temperatures for Oxygen Intake at Rest
A new system named the polynomial equation method was proposed in the present study for the determinations of the lower and upper critical air and body temperatures for oxygen intake at rest. Nine young adult males were tested by the new method and the critical temperatures of them were determined as follows: the lower critical air temperature to be 23.8°C, the upper critical air temperature to be 45.4°C, the lower and upper critical mean skin te…
Sex Difference in Oxygen Intake and Heart Rate during Assuming Ten Basic Postures under Different Air Temperature Conditions
Twenty four young female and male subjects, twelve in each, all in good physical conditions, volunteered for this study. Examinations were made during the following ten basic postures: lying awake, sitting with crossed legs on the floor, sitting on a chair, squatting with hands on knees, bending with trunk forward from standing posture, standing at ease, standing with attention, half rising posture with knees nearly extended, half rising posture …
Heart Rate and Pulmonary Ventilation as Indices of Oxygen Intake
On the basis of the close relationship between oxygen intake and heart rate or pulmonary ventilation, the estimation of oxygen intake from heart rate or pulmonary ventilation has been proposed for use in field studies from the viewpoint of avoiding the cost and complexity of gas analysis. Some authors have pointed out that pulmonary ventilation has an advantage over heart rate since instead of the construction of separate regression lines for eac…
Heart Rate as an Index of Oxygen Intake
The purpose of this study is to investigate the relibaility and validity of prediction of the oxygen intake during works on the basis of heart rate at work.During four kinds of standard treadmill walking of 3.6km/h with a slope varying from o to 15 degrees and four kinds of standard bicycle ergometer work of o to 900kgm/min, the oxygen intake and heart rate were measured on four young adult males(Table1).For the whole subjects and for each indivi…
Postural Effect on Oxygen Intake and Heart Rate and Sex Difference in It
Oxygen intake and heart rate during ten basic postures were measured in 13 young male adults. Significant difference for different postures were more frequently observed for mean heart rate levels than for oxygen intake (Tables 3 & 4). The analysis of covariance for both measurements disclosed that changes in heart rate level were, to a considerable extent, independent from the oxygen intake level (Table 5). The regression equation of heart rate …
Estimation of Maximal Oxygen Intake from Submaximal Works at Air Temperature of 20°C, 30°C, and 40°C
The estimation of maximal oxygen intake from heart rate and oxygen intake during submaximal works at different air temperature conditions was investigated, and as a result, a nomogram available for the estimation at 20°C, 30°C, and 40°C has been published (SATO, SAKATE & TAKASAKI '76). However, this nomogram is responsible only for males. The first purpose of this study is to improve the nomogram with female data and to make it responsible for bo…
Indirect Determination of Maximal Oxygen Intake at Different Air Temperature Conditions
The purpose of this study is to make a nomogram for estimating maximal oxygen intake at 20°C, 30°C and 40°C of air temperature and to investigate the reliability and validity of it.Two male subject groups volunteered for this study. Group I consists of students of Kyushu Institute for Design Research, none of them has a career as an athlete or special experiences of physical training. Group II is students of Department of Physical Education in Hi…
Mean Skin Temperature. Comparison of the formulas calculating it, combined effect on it of air temperature and muscular work, and a nomogram for estimating it from the heart rate and oxygen intake
A number of studies on weighting and unweighting formulas for calculating mean skin temperature are reviewed. From the view point of simplicity of experimental technique and calculation in field studies, a four-p int mean based on a system devised by Ramanathan (1964) is noted especially.The present authors concluded from a review of many previous studies concerning mean skin temperasure during muscular works that increases in cutaneous venous to…
Kyoto Ceramics
Design Motifs
Longitudinal Observation on the Chest Circumference and Sitting Height of Japanese-American Hybrids from 6 to 15 Years of Age
The present longitudinal growth study was made on 36 male and 21 female Japanese-American hybrids to clarify age changes in mean values of the chest circumference and sitting height. Analysis was also made on age changes in size relative to stature in the same subjects.(1) In females, the chest circumference was greater in the hybrids than in the Japanese after puberty, probably because of the considerably better development of the breasts (mamma…
Electromyographic Studies on Facial Muscles of Japanese-American Hybrids
[in Japanese]
Isometric and Eccentric Strength of Elbow Flexors and Extensors
Isometric and eccentric maximum strength of elbow flexors and extensors were measured with a special tension-meter at five steps of elbow joint angulation (45°, 60°, 90°, 130°, 160°). Thirty-one female students served as subjects.The results are summarized as follows:1) Independently of the elbow flexors or extensors and the isometric contraction or eccentric contraction, the muscular strength is maximum at 90° among all the angulations tested.2)…
An Analysis of Subjective Weight Sensation
[in Japanese]
Cardiac and Muscular Factors in the Microvibration on the Human Body Surface
Mechanical oscillations on the body surface have been presumed to correspond with the rhythmical tendency of skeletal muscles and to be determined by the delay in the stretch reflex servoloop (LIPPOLD et al. '57). On the other hand, the oscillations in the spinal reflex arc have been emphasized to be directly responsible for the generation of the invisible microvibrations on the human body surface (SUGANO & INANAGA '60, '61). The present study be…
Cooling Effects on the Muscular Activity
Global EMG of various muscles in approximately isometric-isotonic contractions were recorded before and during the cooling of the muscles, and changes in frequency components were studied using an automatic frequency analyzing integrator.Skin temperature near the recording electrodes were used as a measure of the degree of cooling.The frequency spectrum showed remarkable lowering when the muscle was cooled. The degree of spectrum changes were rev…
Muscle Fatigue in the Half Rising Posture
The half rising posture is very often seen among Japanese labourers and is well known to induce them to get tired if too prolonged. The electromyographic investigation of this posture were already reported by KAWAKAMI & TAKANO ('54) and KoNDO ('60). However, compared with recent works of the frequency analysis of the global EMG (SATO et al. '65), there are some difficulties in accepting their interpretation that a considerably strong contraction …
Some Problems in the Quantitative Evaluation of Muscle Fatigue by Frequency Analysis of the Electromyogram
[in Japanese]
Severe developmental defects of enamel in a human skeleton of the Final Jomon age from the Nakazawahama shell-mound, Iwate, Japan
In an adult human skeleton of the Final Jomon age excavated at the Nakazawahama shell-mound in Iwate Prefecture, northeastern Japan, grooved enamel defects (about 2 mm in width) were observed circumferentially around the dental crowns of the upper left central incisor, upper right lateral incisor, and upper right canine. Observations of the crown surface using a stereomicroscope and evaluations of soft X-ray images revealed severe developmental d…
Physiological Effects of Shinrin-yoku (Taking in the Atmosphere of the Forest)—Using Salivary Cortisol and Cerebral Activity as Indicators
The purpose of this study is to examine the physiological effects of Shinrin-yoku (taking in the atmosphere of the forest). The subjects were 12 male students (22.8+/-1.4 yr). On the first day of the experiments, one group of 6 subjects was sent to a forest area, and the other group of 6 subjects was sent to a city area. On the second day, each group was sent to the opposite area for a cross check. In the forenoon, the subjects were asked to walk…
Physiological Anthropology Design
With the recent globalization of industrial products, there is doubt as to whether the methodology of Physiological Anthropology has also been standardized. The purpose of this study is to assess signs of standardization through a comparative analysis of Physiological Anthropology design in Germany and Japan. This survey investigates its characteristics through four factors: comfort, usability, sensation and aesthetics. Both nations regard the fi…
Frequency Components of the Electromyogram Led with the Bipolar Surface Electrodes
Five students of Japan Women's College of Physical Education were used as the subjects. They were asked to put on an apparatus like the one shown in Fig. l for fixing the elbow or ankle joint at various angles. While either one of the main limb muscles(M. biceps brachii, M. triceps brachii, M. tibialis anterior, or M. gastrocnemius) was kept in a sustained isotonic-isometric contraction, electromyogram of the test muscle was led by the bipolar su…
Some Problems in the Quantitative Evaluation of Muscle Fatigue by Frequency Analysis of the Electromyogram
[in Japanese]
Differential Fatiguability between the One- and Two-Joint Muscles
The present study was designed to confirm the differential f atiguability between the one and two-joint muscles by the frequency analysis of the EMG activities of each pair of elbow flexors (M. biceps brachii and M. brachioradialis), knee extensors (M. rectus femoris, M. vastus medialis, and M. vastus lateralis), and ankle extensors (M. gastrocnemius and M. soleus). The results are summarized as follows :(1) The lowering in the frequency spectra …
Muscle Fatigue in the Half Rising Posture
The half rising posture is very often seen among Japanese labourers and is well known to induce them to get tired if too prolonged. The electromyographic investigation of this posture were already reported by KAWAKAMI & TAKANO ('54) and KoNDO ('60). However, compared with recent works of the frequency analysis of the global EMG (SATO et al. '65), there are some difficulties in accepting their interpretation that a considerably strong contraction …
An Analysis of Subjective Weight Sensation
[in Japanese]
Cardiac and Muscular Factors in the Microvibration on the Human Body Surface
Mechanical oscillations on the body surface have been presumed to correspond with the rhythmical tendency of skeletal muscles and to be determined by the delay in the stretch reflex servoloop (LIPPOLD et al. '57). On the other hand, the oscillations in the spinal reflex arc have been emphasized to be directly responsible for the generation of the invisible microvibrations on the human body surface (SUGANO & INANAGA '60, '61). The present study be…
Cooling Effects on the Muscular Activity
Global EMG of various muscles in approximately isometric-isotonic contractions were recorded before and during the cooling of the muscles, and changes in frequency components were studied using an automatic frequency analyzing integrator.Skin temperature near the recording electrodes were used as a measure of the degree of cooling.The frequency spectrum showed remarkable lowering when the muscle was cooled. The degree of spectrum changes were rev…
Longitudinal Observation on the Chest Circumference and Sitting Height of Japanese-American Hybrids from 6 to 15 Years of Age
The present longitudinal growth study was made on 36 male and 21 female Japanese-American hybrids to clarify age changes in mean values of the chest circumference and sitting height. Analysis was also made on age changes in size relative to stature in the same subjects.(1) In females, the chest circumference was greater in the hybrids than in the Japanese after puberty, probably because of the considerably better development of the breasts (mamma…
Electromyographic Studies on Facial Muscles of Japanese-American Hybrids
[in Japanese]
Isometric and Eccentric Strength of Elbow Flexors and Extensors
Isometric and eccentric maximum strength of elbow flexors and extensors were measured with a special tension-meter at five steps of elbow joint angulation (45°, 60°, 90°, 130°, 160°). Thirty-one female students served as subjects.The results are summarized as follows:1) Independently of the elbow flexors or extensors and the isometric contraction or eccentric contraction, the muscular strength is maximum at 90° among all the angulations tested.2)…
Design Motifs
Mean Skin Temperature. Comparison of the formulas calculating it, combined effect on it of air temperature and muscular work, and a nomogram for estimating it from the heart rate and oxygen intake
A number of studies on weighting and unweighting formulas for calculating mean skin temperature are reviewed. From the view point of simplicity of experimental technique and calculation in field studies, a four-p int mean based on a system devised by Ramanathan (1964) is noted especially.The present authors concluded from a review of many previous studies concerning mean skin temperasure during muscular works that increases in cutaneous venous to…
Kyoto Ceramics
Postural Effect on Oxygen Intake and Heart Rate and Sex Difference in It
Oxygen intake and heart rate during ten basic postures were measured in 13 young male adults. Significant difference for different postures were more frequently observed for mean heart rate levels than for oxygen intake (Tables 3 & 4). The analysis of covariance for both measurements disclosed that changes in heart rate level were, to a considerable extent, independent from the oxygen intake level (Table 5). The regression equation of heart rate …
Estimation of Maximal Oxygen Intake from Submaximal Works at Air Temperature of 20°C, 30°C, and 40°C
The estimation of maximal oxygen intake from heart rate and oxygen intake during submaximal works at different air temperature conditions was investigated, and as a result, a nomogram available for the estimation at 20°C, 30°C, and 40°C has been published (SATO, SAKATE & TAKASAKI '76). However, this nomogram is responsible only for males. The first purpose of this study is to improve the nomogram with female data and to make it responsible for bo…
Indirect Determination of Maximal Oxygen Intake at Different Air Temperature Conditions
The purpose of this study is to make a nomogram for estimating maximal oxygen intake at 20°C, 30°C and 40°C of air temperature and to investigate the reliability and validity of it.Two male subject groups volunteered for this study. Group I consists of students of Kyushu Institute for Design Research, none of them has a career as an athlete or special experiences of physical training. Group II is students of Department of Physical Education in Hi…
Heart Rate as an Index of Oxygen Intake
The purpose of this study is to investigate the relibaility and validity of prediction of the oxygen intake during works on the basis of heart rate at work.During four kinds of standard treadmill walking of 3.6km/h with a slope varying from o to 15 degrees and four kinds of standard bicycle ergometer work of o to 900kgm/min, the oxygen intake and heart rate were measured on four young adult males(Table1).For the whole subjects and for each indivi…
Heart Rate and Pulmonary Ventilation as Indices of Oxygen Intake
On the basis of the close relationship between oxygen intake and heart rate or pulmonary ventilation, the estimation of oxygen intake from heart rate or pulmonary ventilation has been proposed for use in field studies from the viewpoint of avoiding the cost and complexity of gas analysis. Some authors have pointed out that pulmonary ventilation has an advantage over heart rate since instead of the construction of separate regression lines for eac…
Sex Difference in Oxygen Intake and Heart Rate during Assuming Ten Basic Postures under Different Air Temperature Conditions
Twenty four young female and male subjects, twelve in each, all in good physical conditions, volunteered for this study. Examinations were made during the following ten basic postures: lying awake, sitting with crossed legs on the floor, sitting on a chair, squatting with hands on knees, bending with trunk forward from standing posture, standing at ease, standing with attention, half rising posture with knees nearly extended, half rising posture …
The Lower and Upper Critical Temperatures for Oxygen Intake at Rest
A new system named the polynomial equation method was proposed in the present study for the determinations of the lower and upper critical air and body temperatures for oxygen intake at rest. Nine young adult males were tested by the new method and the critical temperatures of them were determined as follows: the lower critical air temperature to be 23.8°C, the upper critical air temperature to be 45.4°C, the lower and upper critical mean skin te…
The Effect of Air Temperature on Maximal Oxygen Intake
The purpose of this study was to investigate the effect of air temperature on maximal oxygen intake. Ten adult males were used as subjects. The maximal oxygen intake was measured at 10°C, 20°C, 30°C, 40°C, and 50°C of air temperature, all at 50% of relative humidity. The largest value of maximal oxygen intake was obtained at an air temperature of 30°C and was significantly greater than the value at 20°C and 40°C. A polynomial equation was used to…
The Influence of Clothings on the Lower Critical Temperature
This paper describes the effect of clothing insulation on the lower critical temperature. Ten young adult females assumed reclining position at 12°C for one and half hour. The lower critical temperature was estimated at 0.43clo, 0.67clo, 0.87clo, 1.25clo, and 1.75clo conditions according to the intersect method. The regression equation of the lower critical temperature on the do value was LCT=31, 6-5.861, where LCT is the lower critical temperatu…
Physiological Anthropology Design
With the recent globalization of industrial products, there is doubt as to whether the methodology of Physiological Anthropology has also been standardized. The purpose of this study is to assess signs of standardization through a comparative analysis of Physiological Anthropology design in Germany and Japan. This survey investigates its characteristics through four factors: comfort, usability, sensation and aesthetics. Both nations regard the fi…
Prospect of Manufacturing and Design Based on Physiological Polymorphism
Modern manufacturing and design should satisfy not only the requirements of high cost performance but also of the user. Besides that, the social environment which surrounds manufacturing is rapidly changing depending on new technologies. To create future products with user satisfaction, the effective use of human physiological data is essential. This is where knowledge of physiological anthropology can be applied. Physiological anthropologists ha…
Evaluating the Relationships between the Postural Adaptation of Patients with Profound Cerebral Palsy and the Configuration of the Seating Buggy's Seating Support Surface
We are currently investigating the physiological polymorphism of wheelchair users with profound cerebral palsy and the properties of the Seating Buggy (developed by S. Nishimura, 1998) to clarify important and general elements of wheelchairs for widespread use. Cerebral palsy is a diagnostic term used to describe a group of motor syndromes resulting from disorders in early brain development. Recently, it has been shown that the Seating Buggy prod…
Medicine (22 works) · Mathematics (15 works) · Internal Medicine (12 works) · Internal Medicine (11 works) · Physics (11 works) · Biology (8 works) · Thermoregulation and physiological responses (8 works) · Chemistry (7 works) · Heart rate (7 works) · Muscle activation and electromyography studies (7 works)