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The authors were able to quantify their risk
从数据中得出结论，研究人员进一步量化了
assessments further and concluded from their data
能显著降低乳腺癌的风险
that between 30 to 150 minutes of physical activity
从数据中得出结论
per week provided significant reductions
每周30到150分钟的运动
in breast cancer risk. And exercising 1 to 3 times
能显著降低乳腺癌的风险
per week led to a 50%... And exercising
每周运动一到三次
1 to 3 times per week led to a 50% reduction
使乳腺癌风险降低50%
in breast cancer risk.
前列腺癌是所有人种
Prostate cancer is the most common cancer
的男性最常见的癌症
among men of all races. It is also one of
该疾病也是
the leading causes of cancer death in men.
男性癌症死亡的首要原因之一
At this time there is insufficient data to support
目前，没有足够的证据
a role for physical activity in prostate cancer risk.
证明运动能抑制前列腺癌
The AICR summary reviewed two studies
美国癌症研究所总结评估了两个相关研究
but there was not adequate evidence to form
但是没有足够的证据得出一个最终结论
a final judgment. However, the AICR does state
然而,美国癌症研究所
that they see evidence that physical activity
通过一些证据认为
does reduce the risk of aggressive or
运动确实能够降低
advanced forms of prostate cancers.
积极和高级形式的前列腺癌
A large population of men were followed
研究跟踪调查了一个很大的男性群体
to understand lifestyle and disease risks.
以了解他们的生活方式和前列腺癌风险
This was called the Physician's Health Study
这个研究叫做医师健康研究
and included over 22,000 men between
研究对象包括年龄在40到84岁的
the ages of 40 and 84. Using this population
22000名男性，通过对这个群体的调查
associations between physical activity
运动和前列腺癌风险
and prostate cancer risk was assessed.
之间的关系得到了评估
The men were asked about the frequency of
研究调查这些男性
their participation in vigorous exercise which
参加能够流汗的
was defined as adequate to cause them to sweat.
剧烈运动的频率
These men were then followed for
这些男性被跟踪研究了
over 11 years and the number of cases
11年以上，前列腺癌
of prostate cancer correlated to
发病人数与记录
their recorded physical activity.
的运动情况相关联
The study results were that 28% of the men
研究结果是 28%的男性
exercised at a level that caused them
每周进行流汗运动，的次数为零
to sweat less than once per week while 16%
而16%的男性每周
exercised at this level more than 5 times per week.
会进行5次以上的流汗运动
There were no significant associations
剧烈运动频率
between frequency of vigorous exercise
和前列腺癌发病率
and prostate cancer risk.
并没有明显关联
