The Frequency of Illness during Group Mountain Climbing at Junior High Schools in Nagano Prefecture

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  • HANAOKA Masayuki
    First Department of Medicine, Shinshu University School of Medicine
  • ASAKAWA Shun
    Undergraduate, School of Medicine, Shinshu University School of Medicine
  • NISHIMURA Ryohei
    Undergraduate, School of Medicine, Shinshu University School of Medicine
  • KAWASAKI Yoichiro
    Undergraduate, School of Medicine, Shinshu University School of Medicine
  • URUSHIHATA Kazuhisa
    First Department of Medicine, Shinshu University School of Medicine
  • KUBO Keishi
    First Department of Medicine, Shinshu University School of Medicine

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  • 長野県中学校集団登山における疾病発生状況
  • ナガノケン チュウガッコウ シュウダン トザン ニ オケル シッペイ ハッセイ ジョウキョウ

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Abstract

A questionnaire survey was carried out to investigate the frequency of symptoms or illness during group mountain climbing at junior high schools in Nagano Prefecture from 2001 to 2005 via the accompanying doctors or school health workers. The results revealed that an average 17.2% of the students showed some symptoms or illness during mountain climbing in this 5-year period. The frequencies of symptoms were, in order, headache (4.16%), stomach ache (3.36%), nausea/vomiting (2.43%), injury (1.73%) and fever (1.46%). Although rare, hyperventilation syndrome (0.23%) and bronchial asthma attack (0.19%) were also observed. Symptoms and illness occurred more frequently in cloudy weather (24.7%) than in either sunny (16.5%) or rainy weather (16.5%). Such occurrences manifested themselves more frequently on Mt. Jonen (24.6%) and Mt. Nishikoma (20.1%) than on Mt. Norikura (8.1%). All events were mild and no severe cases or death were reported throughout the five years. In this investigation, we found that more than 10% of the students who participated in the group mountain climbing manifested some symptoms or illnesses, particularly symptoms which may result in acute mountain sickness.

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