Review Article

Effect of Yoga on Blood Pressure in Prehypertension: A Systematic Review and Meta-Analysis

Table 3

Characteristics of studies included.

Sr. no.Author/yearSample sizeStudy populationIntervention descriptionFrequencyTotal time (min)B.P measurement
StudyControlStudyControl

1Thiyagarajan, et al. [18]192Age- 20-60 years, without known CVD, SBP 120–139 mmHg, DBP 80–89 mmHg.DASH diet, aerobic physical activity, body weight management (BMI 18.5–24.9 Kg/m2) + yoga sessions breath-body coordination practice, joint loosening practice, asanas-talasana, ardhakati chakrasana, ardhachakrasana, uttanpadasana, ardhahalasana, pawanmuktasana, sarvangasana, makarasana, bhujangasana, dhanurasana; pranayama (pranav, chandranadi, nadi shuddhi pranayamas), relaxation- kayakriya in shavasana, and shavasana with savitri pranayama.DASH diet + aerobic physical activity, body weight management (BMI 18.5–24.9 Kg/m2)3 sessions/week7 days/week1620 (mentioned only for yoga group), not reported for control groupAutomatic BP monitor
2Vrinda hari ankolekar, [12]102Participants with prehypertension (AHA criteria)Yoga session-asanas-tadasana, trikonasana, vajrasana, suptavajrasana, pawanmuktasana, bhujangasana, dhanurasana, parshwakonasana, shalabhasana, padottanasana, vakrasana, shavasana; pranayama, anulom vilom, suryabhedana, chandrabhedana, bhramari, and meditation.Not reportedFirst 15 days- 60 min/day; 45 min for 6 days/weekNot reported7380 (reported only for the study group.)Sphygmomanometer
3Hagins, et al. [17]84Age- 21–70 years, SBP between 120 and 159 mmHg, DBP 80–99 mmHg, medically stable on any current medications, BMI 18.5–40 Kg/m2Asanas-bhujangasana, setubandasana, chakravasana, uttanasana, suryanamaskar, veerbhadrasasana, padahastasana, trikonasana, utthita-parsvakonasana, prasarita padottanasana, side stretching, janu shirshasana, shalabhasana, titli asana, shavasana. 1st month: warm up. 2nd month-suryanamaskar, 3rd month- veerbhadrasana Asanas for meditation-sukhasana, ujjayi.Body weight exercises, stretching, therabands, equipment based.55 min sessions for 12 weeks. 2 sessions supervised, 3 sessions unsupervised/week.55 min sessions for 12 weeks. 2 sessions supervised, 3 sessions unsupervised/week.3300 for both groups.Ambulatory BP by aneroid sphygmomanommeter.
4Hughes et al., [13]56Age 30–60 years, unmedicated BP, SBP 120–139 mmHg, DBP 80–89 mmHg.MBSR-meditation, yoga exercises, body scan exercise. Yoga exercises not mentioned.16 muscle groups to 4 muscle group relaxation and later relaxation by recall.8 sessions of 150 min; 45 min 6 sessions/week8 sessions of 150 min; 45 min 6 sessions/week4320 for both groups.Automated oscillometer BP device
5Cohen et al., [14]78Age 29–69, untreated SBP 130–160 mmHg, DBP less than 100 mmHg.IY-savasana, supta badda konasana, supta swastikasana, bharadwajasana, pavanamuktasana, adho mukkha viasana, adho mukha swastikasana, adho mukkha savasanaEUC- dietary control classes- lifestyle management classes and active BP control lectures, motivational classes.1st 6 weeks -twice a week session (70 min), 2nd 6 weeks once a week session+ 25 min DVD based home practice4–60 min group classes, and 2–30 min individual phone calls.2310 for IY group+ 300 for EUCAmbulatory BP.
6Sieverdes, et al. [15]31Seventh grade students who did not have experience in formalised yoga programmes, nonhypertensive youth.Hatha yoga-ardha chandrasana, setubandasana, utkatasana, bhujangasana, tadasana, adho mukha shwanasana, upavista konasana, uttanasana, vrikshasana, veerbhadrasana, shawasana pranayama, ujjayi.Active group- music and art classes according to calendar.6 weeks 2 session 90 min session, and 6 weeks 3 sessions 90 min, alternately6 weeks 2 session 90 min session, and 6 weeks 3 sessions 90 min, alternately2700 for both groups.B.P monitor machine
7Mahesh et al., [11]88Prehypertensive SBP 120–139 mmHg, DBP 80–89 mmHg.Simple yogic exercisePrescribed drugs with lifestyle modification.120 min for 2 weeks (supervised), self-performed exercises (unsupervised- rest of the study time).Not reported1680 for yoga group.Not reported

Sr. no.Author/yearSample sizeStudy populationIntervention descriptionFrequencyTotal time (min)B.P measurement
StudyControlComboStudyControlCombo
8Cohen, et al. [14]137Willing participants who gave voluntary written consent, age ≥18 years, SBP ≥130 mmHg but less than 160 mmHg.Yoga group- asanas not mentioned- hatha yogaBPEP- small group health education, walking programme, 12 nutritional classes + motivational classes.Yoga classes, nutrition lectures, walking programme. Optional- motivational lectures and home practice90-minute session biweekly for 1st 12 weeks. Later 12 weeks- community classes of yoga.6 days a week, (30 min of walk/10,000 steps per day)Yoga- 2 sessions/week, nutrition- 2 sessions/week, 30 min walking programme.12960Ambulatory B.P measurement (machine)

CVD: cardiovascular disease, SBP: systolic blood pressure, DBP: diastolic blood pressure, DASH: dietary approaches to stop hypertension, BMI: body mass index, AHA: American Heart Association, EUC: enhanced usual care, SBP: systolic blood pressure, DBP: diastolic blood pressure, and BPEP: blood pressure education programme.