Recent studies on the ama.
スポンサーリンク
概要
- 論文の詳細を見る
Daily diving patterns, especially depth-time profiles, were continuously recorded during the entire work shift in cachido and funado divers at various locations in Japan. Cachidos dive free and unassisted from a boat or float while funado divers are assisted by weighted descent and during the ascent by being pulled up to a boat on the water surface by a partner. Both funado and cachido divers spent 250-280 min per day on the sea at their diving locations (Hegura, Ishikawa Prefecture) of which the actual diving time was 100-120 min. The divers made 90-120 dives/day to a depth of 13-22 m, each dive lasting -60 s, considerably longer and deeper than those observed and recorded previously in ama divers in the Chiba and Miura regions. These dive profiles are similar to those reported by Paulev in which he observed apparent signs of decompression sickness when the subject dived to a depth of 15-20 m 100 times in five hours. The average bottom time for each dive of Hegura funados was 23.6 sec which is by -10 s longer than that of Korean female ama. The rate of ascent in the funado divers was 1.5 m/s which is nearly twice that of the cachido divers (0.8 m/s) . The dive frequency of Hegura funados (109 dives/day) was greater than the Chiba male funados (23 dives/day) . Accordingly cumulative bottom time of Hegura funado was 48 min/day, whereas that of Chiba funado was 17 min/day. This markedly different diving pattern between Hegura and Chiba divers may be attributed to the fact that Chiba divers are considerably more cold-exposed because they do not wear wet suits. Although the depth and number of dives per day were possible to develop decompression sickness, it did not occur in the ama of Japan.
- 日本生気象学会の論文
日本生気象学会 | 論文
- スギ花粉の放出と拡散過程の解明 (〔第41回日本生気象学会大会〕シンポジウム:植物とヒトとのかかわり)
- 高温環境における局所冷却時の生理応答--人体熱モデルによる解析と被験者実験
- 花粉症について (〔第41回日本生気象学会大会〕シンポジウム:植物とヒトとのかかわり)
- 農村地域における高齢者住宅の温熱と空気環境の実態
- ドイツにおける健康関連分野での森林利用に関する研究