This article describes varied problems incidental to the analysis on human behaviors. Movement or motion analysis may have problems not only in its lack of description standard, but also in conflict of consensuses on related knowledge and involved motor skills. The article also points out that future trials for elucidating techniques of investigators will be needed in order to overcome problems in reliability and appropriateness of movement or motion analysis.

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In the series of electromyographic analysis on human motions, the present article introduces various experimental methods on reaction time as well as related investigations. By using movement analysis of patients with Parkinson's disease, practical exercise program for them was prepared, and the relation between process of the program and functional impairment was reviewed by related literatures.

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The analysis of human motions is important for physical therapists in an effort to know physical condition of patints. However, physical therapists do not have any evaluation form that is graded for the analysis of human motions. I therefore introduce here the articles on assessment of human motions available for clinical treatment, especially those on kinematics and kinetics.

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Although gait analysis has in general been performed by using particular appliances in experiments, it is made by empirical observation in clinical treatments. The primary purposes of the article were to describe causes and characteristics of abnormal gait and to introduce the observation method for analyzing abnormality (assessment chart). Clinical usefullness of a 10-m gait, often used for evaluation of exercise effect on hemiplegic patients, was also examined.

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I presented movement and motion analysis of hemiplegia for the various disability levels. Any type of analysis should lead to further understanding of movement or motion in hemiplegia, and thence to a planning physical therapy program and subsequently evaluation efficacy of it. I introduced some of our research relating to movement and motion analysis, suggesting objectives and reasons for such analysis that might be of interest to physical therapists.

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Work Study can in general be classified into motion study and time study. This article deals with Therblig analysis, a representative method of the former, and predetermined time standard (PTS) analysis, in which time is assigned to motion, and describes fundamental knowledge about and objective analysis method of work study.

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For the purpose of developing a postural load assessment scale, we selected 10 representative postures from everyday working postures, and analyzed them with dependent variables of burden on upper extremity, duration of a posture, subjective sense of fatigue by a subject, heart rate, and body sway distance. The postural load assessment scale involves load grades (five grades from 'lightest' to 'heaviest') and load characteristics (five grades; 'generally light', 'heavy on duration', 'heavy on upper extremity', 'heavy on duration and upper extremity', and 'generally heavy'). ”Naturally standing posture” was the posture with 'lightest' load and 'generally light' load characteristic, and ”posture with the spine 45° forward bending and with the hip joint 30° flexed” was the posture with 'heaviest' load and 'generally heavy' load characteristic. Assessment results in the present study corresponded well to the the results of previous studies.

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