A CENTURY OF RESEARCH ON THE DURATION OF THE NASAL CYCLE.

Researchers

No. of Ss

Frequency of measurements

Duration of measurements

% Ss with nasal cycle

Range of cycle

Average cycle duration

Method of measurements

Kayser, 1985

?

Clinical study

Clinical study

?

0.5 - 2+ hours

?

Rhinomanometer

Heetderks, 1927

60

10 minutes

2 hours +

80

1 - 4 hours

2.5 hours

Direct observation

Stoksted, 1953

26

30 minutes

3 - 4 hours

38

1.5 - 5 hours

2.5 hours

Rhinomanometer

Soubeyrand, 1964

50

15 minutes

NA

100

2 - 5 hours

3.5 hours

Rhinomanometer

Keuning, 1968

17

15 minutes

3 - 4 hours

71

2 - 7 hours

4.5 hours

NA

Hasegawa 1978

50

15 minutes

7 hours

72

1 - 6 hours

2.9 hours

Pneumotachograph

Eccles, 1978

2

30 minutes

3 - 7 days

100

1 - 2.5 hours

2 hours

Pneumotachograph

Clarke, 1980

5

30 minutes

30 days

100

1.5 - 6 hours

4 hours

Mirror condensation

Werntz, 1981

43

15 minutes

.066 - 3.6 hours

51

0.5 - 3.3 hours

NA

Thermistors

Gilbert, 1989

9

5 minutes

8 hours

44.4

3.5 - 6 hours

4.5 hours

Rhinomanometer