Skip to main content

Table 1 Physical hazards and ambulatory heart rate (HRdriving) and percent maximum heart rate range (PMHRdriving) while driving in the 13 male taxi drivers

From: Ambulatory heart rate of professional taxi drivers while driving without their typical psychosocial work stressors: a pilot study

Case Physical hazards inside taxi cabs Vehicle speed (km/h) 5-min HRdrving (bpm) cHRrest(bpm) dHRmax(bpm) 5-min ePMHRdriving(%)
Temperature (°C) Relative Humidity (%) Noise (dBA) PM2.5(μg/m3) CO2(ppm) # of 5-min HR values Mean Max. Min. Mean
T01 24.1 38.8 72.2 16.7 1042.7 47.3 46 79.0 89.6 72.7 69 (50th) 189.4 8.3
T02 22.1 36.5 68.4 8.9 917.3 29.5 38 89.2 101.9 81.2 78 (75th) 185.9 11.9
T04 32.2 31.3 68.6 22.8 1522.3 44.7 20 74.7 85.1 63.4 61 (25th) 186.6 11.0
T06a 24.3 53.4 70.5 33.1 684.1 32.4 22 73.7 80.4 70.7 68 (50th) 170.9 5.7
T09 28.4 32.5 68.2 14.8 1756.1 24.8 26 86.3 112.5 71.8 68 (50th) 173.6 19.9
T10 31.3 45.7 69.9 30.8 499.7 38.7 16 83.3 94.6 73.7 67 (50th) 159.9 14.6
T11 27.2 36.6 73.6 13.3 1661.5 69.2 35 79.5 86.9 72.0 68 (50th) 177 9.0
T13 25.5 61.1 68.9 21.2 1971.3 37.8 32 69.3 74.1 65.7 61 (25th) 166.8 7.5
T14 26.4 42.3 73.2 32.8 1139.8 48.6 16 70.0 80.7 63.4 61 (25th) 183.9 8.3
T15 27.6 26.3 69.4 14.8 2499.3 38.2 22 86.3 94.1 81.6 77 (75th) 168.1 10.0
T16 24.5 36.7 70.2 19.6 832.9 52.5 28 86.2 102.7 78.6 77 (75th) 168.8 9.8
T17 26.6 32.2 61.4 21.3 769.3 23.2 17 90.3 98.3 84.0 78 (75th) 186.6 13.8
T22b 23.1 55.2 70.7 28.6 1176.3 51.1 26 78.0 88.4 71.8 68 (50th) 175.7 9.5
Mean 26.4 40.7 69.7 21.5 1267.1 41.4 26.5 80.5 91.5 73.1 69.3 176.4 10.7
SD 3.0 10.4 3.0 7.9 580.0 12.7 9.2 7.1 10.6 6.7 6.4 9.4 3.7
  1. Age [mean (range)]: 42.9 (24–67) years. Driving career [mean ± SD]: 7.4 ± 5.4 years. bpm beats per minute, Max maximum, Min minimum, SD standard deviation. aHypertensive without taking anti-hypertensive medication. bHypertensive under treatment with anti-hypertensive medication. cHRrest: the age-and gender(male)-specific 25th, 50th or 75th HRrest percentile in the US adult population reference data from the 1999–2008 National Health and Nutrition Examination Surveys [33]. dHRmax: based on the equation, 205.8 − (0.685 × age). e \( {\mathrm{PMHR}}_{\mathrm{driving}}=\frac{\left({\mathrm{HR}}_{\mathrm{drving}} - {\mathrm{HR}}_{\mathrm{rest}}\right)}{\Big({\mathrm{HR}}_{\max } - {\mathrm{HR}}_{\mathrm{rest}\Big)}} \times 100 \)