Cardiorespiratory and Metabolic Changes during Yoga Sessions: The Effects of Respiratory Exercises and Meditation Practices

Danucalov, Marcello Árias Dias; Simões, Roberto Serafim; Kozasa, Elisa Harumi; Leite, José Roberto

doi:10.1007/s10484-008-9053-2

Cited by 37 publications

(34 citation statements)

References 16 publications

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“…The practice of breathing allows the uptake of more oxygen in the body, thus providing clarity of the mind. The physiological parameters like the heart rate, blood pressure and the oral temperature and the psychological parameters like the personality, learning, the arithmetic and the psychomotor ability and the mental well being were found to be improved with 6-10 months of yogic practice [6,7,8].…”

Section: Discussionmentioning

confidence: 99%

The Effect of Yoga Therapy on Selected Psychological Variables Among Male Patients with Insomnia

Sobana

Parthasarathy²,

Duraisamy³

et al. 2013

JCDR

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Section: Discussionmentioning

confidence: 99%

The Effect of Yoga Therapy on Selected Psychological Variables Among Male Patients with Insomnia

Sobana

Parthasarathy²,

Duraisamy³

et al. 2013

JCDR

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“…This is a gas analyzer system that has been widely used in several populations. 22-25 The system includes a metabolic unit, a neoprene facemask that covers the subjects’ mouth and nose, and a breathing valve that connects to the mask. The device provides data on minute-by-minute oxygen consumption expressed in milliliter-per-minute that were converted into kcal/min using the formula: mL/min × 4.9/1000 .…”

Section: Methodsmentioning

confidence: 99%

Validity of Physical Activity Measures in Individuals After Total Knee Arthroplasty

Almeida

Wert

Brower

et al. 2015

Archives of Physical Medicine and Rehabilitation

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OBJECTIVE To determine the concurrent criterion-related validity of two activity monitors in comparison to the criterion method of indirect calorimetry in older adults after total knee arthroplasty (TKA). DESIGN Validation study. SETTING Subjects completed 9 increasingly demanding daily activities in a research laboratory; each activity was performed for 7 minutes, for a total of 80-minutes while the activity monitors and criterion method were used concurrently. PARTICIPANTS Twenty-one subjects, 67% female, mean age 68±7 years old, and BMI 29±4. INTERVENTIONS not applicable. MAIN OUTCOME MEASURE Energy expenditure (EE) in kcal/min measured by accelerometer-based and multisensor-based monitors, and the criterion method. Validity was assessed by paired t-test, intra-class correlation coefficient (ICC), and Bland-Altman plots comparing the measurements from the activity monitors to the criterion method. RESULTS Measurements from the accelerometer-based monitor were significantly lower than those of the criterion method across all walking and non-walking activities. The underestimations ranged from 40% to 100%. The accelerometer-based monitor demonstrated small to moderate agreement compared to the criterion method (ICCs from 0 to 0.38). Measurements from the multisensor-based monitor were significantly lower than the criterion method during several non-walking activities; yet, the differences were minor (2% to 19%). Measurements from the multisensor-based monitor during walking activities were not different compared to the criterion method. The multisensor-based monitor demonstrated moderate to excellent agreement with the criterion method (ICCs from 0.48 to 0.81). CONCLUSION The multisensor-based monitor showed better criterion-related validity than the accelerometer-based monitor, and should be considered as a tool to measure physical activity in individuals after TKA.

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“…In other reports exhalation is twice as long as inspiration (1). The "Visamavrtti Pranayama" breathing cycle incorporates inspiration, inspiratory breath hold and expiration phases according to the ratio of 1:4:2 (11).…”

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confidence: 99%

Hemodynamic effects of slow breathing: Does the pattern matter beyond the rate?

Paprika

Gingl

Rudas

et al. 2014

Acta Physiologica Hungarica

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Purpose: Patterned breathing allows standardized serial measurements of heart rate variability and baroreflex indices. The slow breathing augments these parameters, and regular exercises, including yoga breathing practices with even respiratory rates have long-term beneficial effects in cardiovascular diseases. The role of temporization of breathing phases, i.e. the ratio of expiration to inspiration, is not known. In order to characterize the hemodynamic and autonomic responses during varying breathing phases 27 volunteers performed three short breathing sessions at 6/minutes frequency with 5:5, 3:7 and 7:3 inspiration expiration ratios. Results: The immediate responses in arterial pressure and heart rate were negligible. The time domain parameters of heart rate variability (SDRR, PNN50, RMSSD) increased significantly with patterned breathing. So did the spontaneous baroreflex gain of increasing sequences (up-BRS, from 12 ± 7 to 17 ± 10 ms/mmHg, p < 0.05), and the cross-spectral low frequency gain, the LF alpha (from 11 ± 7 to 15 ± 7 ms/mmHg, p < 0.05). None of these parameters differed significantly from each other while using any of tested inspiratory-expiratory patterns. Conclusion: The major determinant of autonomic responses induced by slow patterned breathing is the breathing rate itself. From our observations, it follows that slow breathing exercises performed either with diagnostic or therapeutic purpose could be simplified, allowing more extensive investigations.

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Cardiorespiratory and Metabolic Changes during Yoga Sessions: The Effects of Respiratory Exercises and Meditation Practices

Cited by 37 publications

References 16 publications

The Effect of Yoga Therapy on Selected Psychological Variables Among Male Patients with Insomnia

The Effect of Yoga Therapy on Selected Psychological Variables Among Male Patients with Insomnia

Validity of Physical Activity Measures in Individuals After Total Knee Arthroplasty

Hemodynamic effects of slow breathing: Does the pattern matter beyond the rate?

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