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운동자세 및 의복압이 최대의 산소섭취량(VO₂Pmax)에 미치는 영향
정명희,田村熙子,서미아 漢陽大學校 韓國生活科學硏究所 2001 韓國 生活 科學 硏究 Vol.- No.19
This study focuses on the influence of body pressure for posture and clothing pressure on physiological responses of the human body from the viewpoint of clothing physiology. Physiological responses for different exercise postures and different levels of clothing pressure were examined. Six untrained female subjects performed leg exercises, using a bicycle ergometer in the supine and sitting postures. Clothing used in the experiment consisted of two kinds of sportswear -non-pressure suits and pressure suits-both of which were made in the same shape of short sleeves and short pants and were made of the same material of 90% nylon/10% polyurethane. Environmental conditions were at 30±1℃ air temperature, 50±10% relative humidity and 0.2m/sec air velocity. Clothing pressure on the 10 sites of the human body surface and maximal of oxygen intake(V˙O2Pmax) were measured. As a result, body pressure for posture was significantly higher(45 ~55gf/cm3) than the clothing pressure(3~ 25gf/cm2). V˙O2Pmax during exercise was affected both by the posture and clothing pressure. V˙O2Pmax in the sitting posture was 9∼20% higher than that for the supine posture, and V˙O2Pmax in the pressure suits was 2∼12% higher than that in the non-pressure suits.
The Association Between Smoking Status and Breast Cancer Recurrence: A Systematic Review
Muna Alkhaifi,Adam Clayton,Teruko Kishibe,Jory S Simpson 한국유방암학회 2022 Journal of breast cancer Vol.25 No.4
Purpose: To determine whether smoking status (active/passive) affects recurrence events after breast cancer (BC) diagnosis among women. Methods: A comprehensive literature search of MEDLINE, Cochrane Central, EMBASE, and Web of Science databases on smoking status and BC outcomes retrieved 5,940 articles. After reviewing the inclusion and exclusion criteria, we selected 14 articles for a full review and synthesis. Results: Five studies were cohort retrospective, 6 were case-control, 2 were prospective cohort studies, and 1 was a secondary analysis of a randomized control trial. Among the 8 articles that focused on active smoking, 6 showed an increased risk of BC recurrence, and 2 showed no evidence of such an association. Studies that examined former smokers found little evidence of an increased risk of BC recurrence. This association may be dose-dependent. Conclusion: Given the current evidence, although limited, active smokers should quit smoking after BC diagnosis as trends indicate a positive association between active smoking and BC recurrence. More robust evidence is needed to assess such associations and examine the outcomes of quitting smoking in such patients.