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  Indian J Med Microbiol
 

Figure 2: Frequency distribution in power spectrum of RR intervals in time-frequency domains. (A) Pre-alternate nostril breathing (B) during-alternate nostril breathing and (C) post-alternate nostril breathing. In during-ANB, maximum power is at 0.08 Hz, similar to respiratory frequency. It explains that the increase of low frequency power during-alternate nostril breathing is the supplementary because of respiration.

Figure 2: Frequency distribution in power spectrum of RR intervals in time-frequency domains. (<b>A</b>) Pre-alternate nostril breathing (<b>B</b>) during-alternate nostril breathing and (<b>C</b>) post-alternate nostril breathing. In during-ANB, maximum power is at 0.08 Hz, similar to respiratory frequency. It explains that the increase of low frequency power during-alternate nostril breathing is the supplementary because of respiration.