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Figure 2. Study Selection Process

Records identified through database searching Additional records identified through other sources
(n = 1469) (n = 1)
Identification

Records after duplicates removed
(n = 1266)

Records screened Records excluded by title and
(n = 1266) abstract (n = 1191)
Screening

Full-text articles assessed for Full-text articles excluded (n = 47) with reasons:
eligibility (n = 75) • Clinical patients
• Shifted workers
Eligibility • Participants are perinatal women
• People with pyschological problems
• Mix-methods studies
• Review
• Stree as mediator for Yoga
• Letter to editor

Studies included in qualitative
synthesis (n = 28)

Included

Studies included in quantitative
synthesis (systematic analysis)
(n = 12)

RESULTS Characteristics of Included Studies
Study Selection Flow The 12 studies involved 672 participants. The details of
Database searching using the method described led to involved articles are presented in Table 3. Based on the
the retrieval of 1469 studies (PubMed: 732, Scopus: 737). An eligibility criteria, studies with both case and control group
additional source (International Journal of Yoga) online Web comparison were included. Different intervention methods
site was checked. All of the studies were filtered step by step. were performed in various ages groups in adults. Various
From tittle and abstract, it is feasible to spotted out the types of yoga practice (eg, Hatha yoga, Bikram yoga,
ineligible participants (eg, clinical patients, people under Kundalini yoga, Sudarshan Kriya yoga, Kripalu yoga, Yin
regular medical check) and research methods (eg, reviews, yoga) with 3 spectrum from 4 weeks to 28 weeks were
protocols). After screening tittles and abstract, 75 articles conducted. Single studies were published in 2015 and 2018,
went through full-text examination. The articles were 2 studies were published in 2016, and the rest of the included
examined by the aforementioned exclusion criteria. Finally, studies were published in 2017. All of the studies organized
12 studies were included in the system review. The flow chart case group and control group and measured the participants
of study selection process was showed in Figure 2. pre-post intervention. Participants were distributed

Wang—Yoga and Stress Among Healthy Adults ALTERNATIVE THERAPIES, JUL/AUG 2020 VOL. 26 NO. 4 61