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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)