Geodesic
Breathing parameters in students with different types of biorhythms
Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 3 (2014), pp. 187-196

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With the use of technique of spirography it was shown that background values of breathing pattern parameters in students depend on their biorhythmological features and time of day. Most prominent changes in breathing during the day were found in students with "intermediate” type of circadian activity, and less prominent — in students with "late” type of activity. Significant differences in values of respiratory frequency and in duration of respiratory phases between students with "early” and "intermediate” circadian activity were found, and also the differences in frequency and volume parameters of breathing between persons with "intermediate” and "late” activity in the morning and in the evening were registered. The differences in dynamics of respiratory parameters between persons with "early” and "late” types of activity were not significant.
Keywords: breathing pattern, students, types of biorhythms, time of day. 
@article{VSGU_2014_3_a20,
     author = {S. I. Pavlenko and O. A. Vedyasova},
     title = {Breathing parameters in students with different types of biorhythms},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {187--196},
     publisher = {mathdoc},
     number = {3},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2014_3_a20/}
}
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S. I. Pavlenko; O. A. Vedyasova. Breathing parameters in students with different types of biorhythms. Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 3 (2014), pp. 187-196. http://geodesic.mathdoc.fr/item/VSGU_2014_3_a20/