3.8. Side Effects and Sleep Quality
blurred vision, tachycardia, nervousness, dizziness, heart palpitations, shortness of breath
The symptoms of dizziness, tachycardia, heart palpitations, shortness of breath, blurred vision, and nervousness were assessed using separate Likert-type scales for frequency and severity, respectively, where 0 represented none; 1 represented 1–2 per week or minimal; 2 represented 3–4 per week or slight; 3 represented 5–6 per week or moderate; 4 represented 7–8 per week or severe; and 5 represented ≥9 per week or very severe. Participants also reported any other side effects they may have experienced in response to taking the assigned groups. Reliability in answering these side effects questions in our lab yielded means Cv’s ranging from 1.2 to 2.6% [