The relationship between motivation and sense threshold was discussed in children s volleyball training from the viewpoint of psychology.

Based on this view, this paper analyzes the suitability of protective respirators to human body, and systematically puts forward such ergonomic problems as seal, respiratory resistance, dead space and field of vision about protective respirators at the angle of human facial features and bio-mechanical characteristics of head and neck.

Objective:To study the clinical significance of the respiratory resistance and diffusion capacity in lung cancer patients.

Eight subjects wearing five types of non-powered air-purifying respirators with different respiratory resistance and dead space were engaged in bicycle exercise test under medium(100W) and higher(155W) labor intensity,and the subjective well-being of subjects were recorded and analyzed.

In view of its psychological role,the study history of kinesthetic sense and some problems are reviewed,such as its connotation,physiologic mechanism,psychological characters,stimulus,kinesthetic threshold,and kinesthetic deprivation and so on.

WT5BZ]To investigate the relationship between the impulse oscillometry method and plethysmogrophy used in measuring airway resistance, Using the two methods to measure the airway resistance and the ventilation data of 158 patients.