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Table 3 Air intake parameters by sex and by route. Ventilation averages with pollution concentration at each time point determined estimated values

From: Particulate matter exposure and health impacts of urban cyclists: a randomized crossover study

Participant group mean or route mean Ride time (minutes) [sd] Mean \( {\dot{\mathrm{V}}}_{\mathrm{E}} \) in L/min at rest [sd] Mean \( {\dot{\mathrm{V}}}_{\mathrm{E}} \) in L/min during ride by HR [sd] Estimated intake of PNC during trial (particles) [sd] Estimated volume of air inhaled at rest during equivalent ride time (Litres) (resting \( {\dot{\mathrm{V}}}_{\mathrm{E}} \) x ride time) [sd] Estimated volume of air inhaled during ride (Litres) (ride mean \( {\dot{\mathrm{V}}}_{\mathrm{E}} \) x ride time) [sd] Ratio of \( {\dot{\mathrm{V}}}_{\mathrm{E}} \) riding compared to at rest [sd]
Males (n = 28) 63.6 [2.69] 15.8 [5.16]a 47.9 [15.0] 3.86 × 1010
[1.72 × 1010]
1107 [317] 3000 [961] 3.5 [2.8]a
Females (n = 10) 63.1 [3.35] 10.4 [1.76]a 40.4 [10.9] 3.86 × 1010
[2.21 × 1010]
827 [157] 2540 [946] 3.4 [1.1]a
Downtown 63.9 [3.42] 44.8 [14.0] 4.54 × 1010
[1.79 × 1010]
2840 [688] 3.3 [2.2]a
Residential 62.9 [3.57] 47.8 [14.3] 3.13 × 1010
[1.61 × 1010]
3020 [859] 3.8 [2.9]a
Overall 63.4 14.6 [5.13]a 46.1 [14.5] 3.86 × 1010
[1.95 × 1010]
1046 2890 [922] 3.5 [3.5]a
  1. aMeans calculated using complete pairs only; \( {\dot{\mathrm{V}}}_{\mathrm{E}} \) in L/min at rest was only available for 22 participants (17 males, 5 females)