Relationship Between Helmet Temperature and Tympanic Temperature During American Football Practice

Ishigaki, T.; Fujishiro, Hitone; Tsujita, Junzo; En, Yoshio; Yamato, Makoto; Nakano, Shoichi; Hori, Seiki

doi:10.7600/jspfsm1949.50.333

Cited by 12 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this respect, these devices can be said to measure 'intra-aural' temperature . Yeo and Scarborough (1996) found that intra-aural temperature did not respond to a bout of exercise, although other authors have found the typical exercise-induced increase in temperature using intra-aural devices (Ftaiti et al 2001;Ishigaki et al 2001;Atkinson et al 2005). One possible factor is whether sweat is allowed to enter the external auditory meatus; if so, this may aVect the infrared beam used for measurement.…”

Section: Methodological Problems In Human Experimentsmentioning

confidence: 94%

Exercise as a synchroniser of human circadian rhythms: an update and discussion of the methodological problems

et al. 2006

View full text Add to dashboard Cite

We review the literature on whether exercise is a synchroniser of human circadian rhythms, and highlight the specific methodological problems that are associated with this topic. In applied research, exercise has been investigated as a treatment for jet lag and shift-work problems. In these studies, there have been difficulties in controlling the characteristics of the exercise bout, the athletic status of research participants and exposure to other confounding synchronisers. Therefore, it is unclear at present whether exercise can help mitigate the problems associated with transmeridian travel and shift-work. In laboratory-based experiments, participants have exercised at various times of the day and the change in phase of various circadian rhythms has been measured. Although it is difficult to control for the considerable masking effects of exercise on these estimates of circadian timing, it is clear that nocturnal exercise can induce phase delays in the onset of melatonin. Reports of exercise-induced phase advances of the melatonin rhythm are rarer, as are any phase-shifting effects at all on the body temperature rhythm. In practical terms, the substantial levels of activity needed to obtain phase shifts may not be attainable by the majority of people. In mechanistic terms, the lack of agreement with the phase-shifting effects of bright light suggests that exercise is not exerting its effects via photic entrainment pathways. An alternative explanation may involve exercise-induced hyperthermia. Moreover, it is perplexing why exercise should have a different phase response curve to light, given that humans are diurnally active.

show abstract

Section: Methodological Problems In Human Experimentsmentioning

confidence: 94%

Exercise as a synchroniser of human circadian rhythms: an update and discussion of the methodological problems

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Increased skin temperature according to skin exposed area (n=3) Ishigaki et al (2001) To examine the relationship among helmet surface temperature, head top temperature and core temperature during American football practices in summer High coefficients of correlation were observed between helmet surface temperature and head top temperature (r =.727).High coefficients of correlation were observed between head top temperature and core temperature (r=.766).The temperature with or without helmet affect to a temperature surrounding the head. Ministry of Health, Welfare and Labor, Japan ( 2009) Precautions against heatstroke in the workplace…”

Section: Author Major Research Contents Resultsmentioning

confidence: 99%

Research trends on prevention of heat stroke using clothing: Focusing on practical research in Japan

손수영¹

2018

Fam. Environ. Res

View full text Add to dashboard Cite

This study identifies Japanese study content on heat stroke prevention measures using clothes, provides basic data for quantitative wearing assessment studies, presents a developmental direction for those, and helps invigorate further research. Studies were collected concerning clothing-based heat stroke measures in order to analyze the following factors: current status of heat stroke by industry and working environment, heat stroke and body cooling method, clothing microclimate and air circulation in a hot environment, hot environments and wearable sensors, and heat stress reduction and skin exposure. The current WBGT standard does not consider the diversity of wearing clothes according to the working environment. Therefore, it is preferable to add a correction value in consideration of design, materials, and ventilation to prevent heat strokes. For the heat stroke and body cooling method, wearing water-perfused clothing is effective to reduce heat stress and maintain exercise ability. Changing the material and design of clothing or wearing air-conditioned clothing can improve ventilation and the clothing microclimate.However, further evaluation is needed on the effectiveness of air-conditioned clothing as a heat stroke prevention product. The measurement method using a wearable sensor can provide real-time data on the body response due to working in a hot environment. Therefore, it is an effective alarm for heat stroke. Skin exposure area and heat dissipation efficiency should be considered to prevent heat stroke. Reducing the covering area by exposing the head, neck, and limbs, and wearing breathable material can prevent heat stroke from increased body temperature.

show abstract

Study on Thermal Comfort of Virtual Reality Headsets

Wang

Chen

2018

Advances in Human Factors in Wearable Technologies and Game Design

View full text Add to dashboard Cite

Relationship Between Helmet Temperature and Tympanic Temperature During American Football Practice

Cited by 12 publications

References 13 publications

Exercise as a synchroniser of human circadian rhythms: an update and discussion of the methodological problems

Exercise as a synchroniser of human circadian rhythms: an update and discussion of the methodological problems

Research trends on prevention of heat stroke using clothing: Focusing on practical research in Japan

Study on Thermal Comfort of Virtual Reality Headsets

Contact Info

Product

Resources

About