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Effects of Fish Oil in Alleviating Health Hazards Associated With Ozone Exposure

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信息的提供 (责任方):
Haidong Kan,Fudan University
September 30, 2018
October 5, 2018
October 5, 2018
September 20, 2018
November 11, 2018   (主要结果测量的最终数据收集日期)
Changes of FEV1[ Time Frame: FEV1 will be examined immediately prior to exposure, immediately after exposure, 2 hours after exposure and again the next morning ]
Changes of forced expiratory volume in 1 second

Changes of FVC[ Time Frame: FVC will be examined immediately prior to exposure, immediately after exposure, 2 hours after exposure and again the next morning ]
Changes of forced vital capacity

与当前相同
  • [ Time Frame: ]
 
Effects of Fish Oil in Alleviating Health Hazards Associated With Ozone Exposure
Effects of Fish Oil in Alleviating Cardiopulmonary Hazards Associated With Ozone Exposure in Young Healthy Adults

This study aims to evaluate whether dietary supplementation with fish oil can protect against the cardiopulmonary effects induced by ozone exposure.

The investigators will conduct a randomized controlled trial among 64 healthy young adults in Shanghai, China. The eligible participants will be randomly assigned in a 2*2 factorial design to 1 of 4 groups: 1) fish oil and ozone exposure, 2) fish oil and shame exposure, 3) soy oil and ozone exposure, or 4) soy oil and shame exposure. The participants who take fish oil would receive 2.2 g/day (two 1.1-g capsules daily) in divided doses, and other participants will take the same amount of soy oil capsules. Two hour ozone exposure (200 ppb ozone) or shame exposure (0 ppb ozone) will be conducted in a chamber after four weeks of supplementation. Ozone is generated by a silent electric discharge method (HTU-500, AZCO Industries Ltd., Canada) and introduced into the chamber. The temperature and relative humidity in the chamber are maintained at 22±1℃ and 50%±5%, respectively. During the 2-hour exposure, each subject alternate 15 minutes of exercise on a treadmill and 15 minutes of rest. The exercise workload would be adjusted to achieve the targeted ventilation of 20±1 L/min/m2 body surface area. Health examinations will be conducted immediately prior to exposure, immediately after exposure, 2 hours after exposure and again the next morning.
Interventional
N/A
分配: Randomized
干预模型: Factorial Assignment
干预模型描述:
盲法: Interventional
盲法描述:
主要目的: Prevention
  • Combination Product: fish oil and acute ozone exposure
    The participants will take fish oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour ozone exposure (200 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
  • Combination Product: fish oil and sham exposure
    The participants will take fish oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour shame exposure (0 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
  • Combination Product: soy oil and acute ozone exposure
    The participants will take soy oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour ozone exposure (200 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
  • Combination Product: soy oil and sham exposure
    The participants will take soy oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour shame exposure (0 ppb ozone) will be conducted in a chamber after four weeks of supplementation
  • Experimental: fish oil and acute ozone exposure
    The participants will take fish oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour ozone exposure (200 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
  • Sham Comparator: fish oil and shame exposure
    The participants will take fish oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour shame exposure (0 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
  • Placebo Comparator: soy oil and acute ozone exposure
    The participants will take soy oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour ozone exposure (200 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
  • Other: soy oil and shame exposure
    The participants will take soy oil (2.2 g/day, two 1.1-g capsules daily) in divided doses. Two hour shame exposure (0 ppb ozone) will be conducted in a chamber after four weeks of supplementation.
 
Enrolling by invitation
64
与当前相同
June 30, 2019
November 11, 2018   (主要结果测量的最终数据收集日期)
Inclusion Criteria: - Living in Shanghai during study period; - Ability to complete the training exercise to induce an inspired ventilation rate of 20±1 L/min/m2 body surface area; - Body mass index >18.5 and ≤30 (30 is the lower limit for class 2 obesity for Chinese); - Taking the fish oil or placebo on time. Exclusion Criteria: - Being allergic to seafood; - Smoking and alcohol abuse; - Current drug and dietary supplements intake; - Subjects with allergic disease, such as allergic rhinitis, allergic asthma, and atopy; - Subjects with cardiovascular disease, such as congenital heart disease, pulmonary heart disease, and hypertension; - Subjects with respiratory disease, such as asthma, chronic bronchitis, and chronic obstructive pulmonary disease; - Subjects with chronic disease, such as diabetes, chronic hepatitis, and kidney disease; - Subjects with a history of major surgery; - Abnormal spirometry (FEV1 and FVC ≤ 75% of predicted and FEV1/FVC ≤ 0.65); - Abnormal baseline 12-lead resting electrocardiogram; - Abnormal blood index, such as cell counting, blood lipids, and glutamic-pyruvic transaminase (GPT).
参与研究的性别: All
最小年龄:18 Years ,最大年龄:30 Years  
没有
China
 
No
研究美国FDA监管的药品: No
研究涉及美国FDA监管的设备产品: No
计划分享 IPD: Undecided
Haidong Kan,Fudan University
Fudan University
Principal Investigator: Haidong Kan, PhD Department of Environmental Health, School of Public Health, Fudan University
Fudan University
October 2018

ICMJE     国际医学期刊编辑委员会和 世界卫生组织 ICTRP 要求的元素
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