§ 38a-13-1-1

38A:13-1.1. Claim for compensation In any claim for compensation for injury or death from cardiovascular or cerebrovascular causes, the claimant shall prove by a preponderance of the credible evidence that the injury or death was produced by effort or strain related to the performance of duty involving a substantial condition, event or happening in excess of the wear and tear of the claimant's daily living and in reasonable medical probability caused in a material degree the cardiovascular or cerebrovascular injury or death resulting therefrom. Material degree means an appreciable degree or a degree substantially greater than de minimis. L. 1987, c. 217, s. 2.