Effects of holding style of infants on physical burden of the childcare worker during vertical evacuation

• Published in: Okayama journal of physical education Vol. 28; pp. 1 - 8
• Main Authors: MORIMURA, Kazuhiro, IIDA, Tomoyuki, MATSUMOTO, Nozomi, KURODA, Shintaro
• Format: Journal Article
• Language: Japanese
• Published: Okayama Society of physical education 31.03.2021; 岡山体育学会
• Subjects: 津波避難; 避難支援; 防災保育
• ISSN: 1348-947X; 2435-7855
• DOI: 10.34520/okayama.28.0_1

  The purpose of this study was to clarify the physical burden （Heart Rate （HR）, Rating of Perceived Exertion （RPE）, physical fatigue） of the childcare worker during vertical evacuation. This study simulated that one childcare worker evacuates four infants to the fourth floor of the building. We set the two conditions: the two-handed holding condition was to hold two infants with both hands, the carry-piggyback condition was to hold one infant with a piggyback strap and to hold other infant with a carry. The measurements were evacuation time, HR during evacuation, RPE and feeling of physical fatigue. As a result, both conditions showed 18 at RPE, 160 bpm at maximum HR and 80mm at feeling of legs fatigue. Therefore, it was clarified that exercise intensity of evacuate to a height over 10m holding infants is more than medium intensity. Compared two conditions, the evacuation time of the two-handed holding condition were significantly lower than that of the carry-piggyback condition （p<0.05）. It is possible that the time of hand over infants showed long because the subjects in this study have never used piggyback strap. The other hand, HR, RPE and feeling of physical fatigue of the carry-piggyback condition were significantly lower than that of the two-handed holding condition （p<0.05）. Our results suggested that was clarified that vertical evacuation using piggyback strap was less physical burden of childcare worker.