Electrocardiographic and Physical Work Capacity Changes in Men in the Antarctic
スポンサーリンク
概要
- 論文の詳細を見る
Electrocardiographic changes in thirty men of 16th Japanese Antarctic Expedition (JARE-16) were studied during the wintering at Syowa Station from February 1975 to January 1976. They were men in good health with average age of 31.0 and a range of 24 to 45. Electrocardiograms were recorded before, after and one year at Syowa Station (February, May and July 1975) . Heart rates, QRS voltage of the precordial leads (SV1+RV5) and electrical axis of the QRS were analysed. Body weights, skinfold thicknesses and blood pressures were measured and hematological examinateions were performed.<BR>Long term changes in physical work capacity in 21 men of 17th JARE were studied during the wintering from February 1976 to January 1977. All were in good health with an average age of 32 years and a range of 24 to 54. Physical examinations and physical performance tests were done in March, June, September and December 1976.<BR>1) Sinus bradycardia was observed in two subjects and first degree A-V block in one subject before, during and after the wintering. Supraventricular and ventricular premature contractions were detected respectively in one subject only in May 1975. Premature contractions might be induced by excessive taking of coffee, alcohol and tobacco during all-night vigil. ECG's recorded in February and July 1975 did not show significant changes in QRS axis, but the heart rates were decreased from 70 to 65.5 (beats/min.) and the QRS voltage (SV<SUB>1</SUB>+RV<SUB>5</SUB>) from 29.7 to 26.8 (mm) . There were no correlations between the decrease in heart rates or QRS voltage (SV<SUB>1</SUB>+RV<SUB>5</SUB>) and the changes of body weights, blood pressures, skinfold thicknesses and hematological data.<BR>2) Pulmonary function (forced vital capacity), body weights and high jump tests were not significantly altered throughout the year. Harvard score, dynamic muscle endurance, grasping power and agility test score increased significantly in September and December. Skinfold thicknesses increased from March to September but decreased in December. Heart rates after Harvard step tests dereased in September and in December. Physical work loads were mild in the winter and heavy in the summer.<BR>These data may be explained on the basis that immobility in the winter season during the wintering might cause deterioration of physical work capacity and induce the electro-cardiographic changes.
- 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