Table 4.

Ratio of minute ventilation of commuting by bicycle, bus and car

	N	Mean	SD	Min	Max
All (n = 34)
Ratio bicycle: bus	31	1.99	0.78	1.31	5.15
Ratio bicycle: car	32	2.09	0.77	1.34	5.30
Ratio bus: car	31	1.05	0.11	0.92	1.33
Men (n = 24)
Ratio bicycle: bus	22	1.76	0.40	1.32	2.98
Ratio bicycle: car	23	1.88	0.38	1.34	3.16
Ratio bus: car	21	1.06	0.11	0.93	1.33
Women (n = 10)
Ratio bicycle: bus	9	2.55	1.17	1.38	5.14
Ratio bicycle: car	9	2.61	1.20	1.58	5.30
Ratio bus: car	10	1.02	0.09	0.93	1.18