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. 2023 Apr 12;15(4):e37504. doi: 10.7759/cureus.37504

Figure 2. Diurnal morning and evening variations of salivary cortisol in a 40-year-old obese male firefighter.

Figure 2

Panel AM: Diurnal variation in morning salivary cortisol showing a trendline of negative slope (R2=0.40). Panel PM: Diurnal variation in evening salivary cortisol showing a trendline of negative slope (R2=0.98). Subject characteristics: height 73 in, weight 272 lbs, body mass index 36 kg/sq m, waist-hip ratio 0.83, pulse 67/min, blood pressure 130/90 mmHg, pulse pressure 40 mmHg, years in fire service 18 y, hours worked prior to shift 168 h, hours worked in past 30 days 168 h.