Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 3 de 3
Filter
Add filters








Year range
1.
Article in Japanese | WPRIM | ID: wpr-376491

ABSTRACT

<b>Objective</b> Enveloping airflow, as opposed to direct airflow, warms the room by gently circulating the airflow along the floor, wall, and ceiling, thereby uniformly warming the entire room. The objective of our study was to determine the effects of air-conditioned heating by enveloping-airflow on sense of fatigue and comfort in healthy volunteers.<br> <b>Design</b> Eight healthy women, who often felt discomfort in an air-conditioned heating environment, participated in a randomized placebo-controlled crossover trial. Subjects rested for 30 minutes in a room air-conditioned either by enveloping airflow or by direct airflow, and then performed fatigue-inducing tasks for 2 hours.<br> <b>Methods</b> We evaluated the sense of fatigue by visual analogue scale (VAS), peripheral blood flow by laser-Doppler flowmetry, and sympathetic nerve activity by urinary vanillylmandelic acid level.<br> <b>Result</b> Air conditioning by enveloping-airflow, as compared to direct airflow, enhanced peripheral blood flow and attenuated sympathetic nerve hyperactivity caused by performing fatigue-inducing tasks. Moreover, it helped to maintain subjective levels of motivation and comfort, as well as to alleviate sense of fatigue and cold.<br> <b>Conclusion</b> Air-conditioned heating by enveloping-airflow is effective for attenuating sense of fatigue and discomfort as well as health maintenance.<br>

2.
Article in Japanese | WPRIM | ID: wpr-376469

ABSTRACT

<i>Objective</i>: In the present study, we investigated the effects of enveloping-airflow air conditioner on health maintenance and fatigue in healthy volunteers. The enveloping airflow is that of gently holding the whole room space along the ceiling, wall, and floor.<br> <i>Design</i>: In a randomized placebo-controlled crossover trial, 10 healthy women who had feeling cold, stiff shoulder and knee pain very often under air conditioner working, participated in the study. They performed fatigue-inducing desk work for 2 hours, and rested for 30 minutes in the air conditioned room controlled by enveloping airflow or direct airflow.<br> <i>Methods</i>: We evaluated subjective sensation by Visual Analogue Scale (VAS), peripheral blood flow by laser-Doppler flowmetry, and body temperature.<br> <i>Result</i>: The enveloping airflow prevented hypothermia, increased blood flow, moreover attenuated feeling of cold, knee pain and fatigue, increased sensation of comfort as compared with the direct air flow.<br> <i>Conclusion</i>: Enveloping-airflow air conditioner is effective in maintaining health and attenuating fatigue.<br>

3.
Article in Japanese | WPRIM | ID: wpr-376486

ABSTRACT

<b>Objective</b> According to a survey conducted by the Japanese Ministry of Health, Labor and Welfare in 2002, 72% of workers feel fatigued, clearly indicating the degree to which the Japanese populace is affected by this problem. However, few scientifically proven anti-fatigue devices have been developed for the benefit of the Japanese society. An automated air massage chair provides soft stimulation with air bags, not spot stimulation with knead balls, over the muscle surface with movements that push the muscles upward. In the present study, using established methods to evaluate fatigue, we investigated the effect of this automated air massage chair on fatigue in healthy volunteers.<br> <b>Method</b> Ten healthy subjects participated in a randomized two-way crossover trial. As fatigue-inducing desk work, subjects performed 8 sets of a 30-min Uchida-Kraepelin psychodiagnostic test and 30-min advanced trail making test (ATMT) during the test day. Subjects rested 15 min on the air massage chair or control chair 4 times: immediately before and at 4, 6 and 8 hours after the start of the workload. We evaluated the subjective feeling of fatigue by visual analogue scale, work performance by ATMT, and analyzed underlying mechanisms by biochemical parameters in saliva and urine.<br> <b>Result</b> Stimulation by air massage chair alleviated the subjective sensation of fatigue and suppressed the decline in work performance. Furthermore, increase in salivary amylase activity and decrease in urine homovanillic acid/creatinine ratio was suppressed.<br> <b>Conclusion</b> Automated air massage chair attenuated fatigue induced by desk work, most likely by correcting the imbalance in the autonomic nervous system. The air massage chair is thus recommended for relieving fatigue induced by work and daily activities.<br>

SELECTION OF CITATIONS
SEARCH DETAIL