Effect of HeartMath Intervention on Stress, Emotional Vitality and Sense of Coherence

Primary outcomes

1. Resilience Scale

   Time frame: over two months

   The Resilience Scale consisted of 25 items and a short version contained 14 items.

   The scale is a 7-point Likert type scale from 1 (Strongly disagree) to 7 (Strongly agree) for each item. Scores on the scale range from 14 to 98. The higher score indicates the ability to respond with resilience and lower score indicates lower resilience.

2. Personal and Organizational Quality Assessment

   Time frame: over two months

   It is a valid and reliable 52-item survey tool developed by the Heart Math Institute that assesses personal health, resiliency, and workplace factors impacting an organization's quality and effectiveness. It is composed of 4 primary scales (emotional vitality, organizational stress, emotional stress, and physical stress), which are further divided into 9 subscales. These scales assess elements that either enhance or impair work performance, health, well-being, and job satisfaction.

3. Sense of Coherence

   Time frame: over two months

   The Sense of Coherence scale measure the concept of sense of coherence. The short form of the Sense of Coherence scale consists of 13 items that comprise three components: comprehensibility (to which 5 items contribute), manageability (4 items), and meaningfulness (4 items). The respondents indicate agreement or disagreement on a 7-category semantic differential scale with two anchoring responses tailored to the content of each item. Five items (1, 2, 3, 5, and 7) are reversed before summing the total score. The total score can range from 13 to 91, and a higher score indicates higher coherence .