When researchers analyzed the results, they found that 25% of participants had detectable troponint levels at the beginning of the study.
当研究人员分析这些结果时，他们发现25%的参加者在研究开始时有可检测的肌钙蛋白t水平。
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But years before such a serious event occurs, troponint may be present at much lower levels than are seen after heart attacks, a quiet sign of a heart under stress.
The studies also found that people with detectable troponint had significantly greater risks of developing heart failure or dying, compared to those in whom the protein couldn't be found.