International Journal of Yoga最新文献

Adolescent idiopathic scoliosis (AIS) is a common spinal deformity that primarily affects adolescents during the key period of growth and development. While traditional treatment methods often involve bracing or surgery, Hatha yoga, a millennia-old practice rooted in Indian tradition, has emerged as a complementary option for AIS cases. This paper explores the potential benefits of Hatha yoga for adolescents with AIS. It also discusses the limitations of existing research, such as the lack of large-scale randomized controlled trials (RCTs), varying yoga protocols, and challenges in blinding participants and researchers. To address these limitations, I propose future research directions, including conducting large-scale RCTs, long-term follow-up studies, standardized yoga protocols, and assessing safety concerns. I also highlight the need for tailored interventions and comparative effectiveness studies to better understand the potential of Hatha yoga in the holistic treatment of AIS in adolescents.

Background: Volitionally modifying respiration leads to changes in middle cerebral arterial (MCA) blood flow. The effect of changes in breath rate on MCA blood flow has not been reported.

Aims and objectives: To determine the effect of slow (bumblebee yoga breathing) and fast (high frequency yoga breathing) yoga breathing techniques on MCA blood flow and vagally mediated heart rate variability.

Materials and methods: Thirty participants (mean age ± standard deviation, 27.3 ± 4.2 years) were assessed on 2 separate days practicing either high frequency yoga breathing (HFYB, breath frequency 54.2/min) or slow frequency bumblebee yoga breathing (BBYB, breath frequency 3.8/min) in random order to determine the effects of changes in breath frequency on MCA hemodynamics. Assessments included transcranial Doppler sonography, vagally mediated heart rate variability (VmHRV), and respiration.

Results: Both HFYB and BBYB (i) reduced MCA flow velocities, i.e., peak systolic, end diastolic, and mean flow velocities, and (ii) increased MCA pulsatility indices. There was an increase in VmHRV during BBYB based on increased power in high frequency (HF) and low frequency (LF). LF reflects VmHRV for slow breath frequencies. In BBYB the average breath rate was 3.8 breaths/min. In contrast, VmHRV decreased during HFYB (based on reduced HF power; repeated measures analysis of variance, P < 0.05, all cases).

Conclusion: Hence, irrespective of the differences in breath frequency, both HFYB and BBYB appear to reduce MCA flow velocities and increase the resistance to blood flow bilaterally, although the VmHRV changed in opposite directions. MCA velocity and pulsatility changes are speculated to be associated with low global neural activity during yoga breathing.

Aims: The aim of this study was to evaluate the effects of yoga-based cardiac rehabilitation (Yoga-CaRe) on the endothelial system, oxidative stress, and inflammatory markers in patients with acute myocardial infarction (MI).

Methods: A sub-study was conducted in two clinical sites of the Yoga-CaRe trial (a multicenter randomized controlled trial). Participants with acute MI were randomized and allocated to either the Yoga-CaRe program (13 sessions with encouragement to home practice) or enhanced standard care (three educational sessions). Endothelial function, oxidative stress, and inflammatory biomarkers were assessed using biomarkers such as asymmetric dimethylarginine (ADMA), endothelial nitric oxide synthase (eNOS), endothelin-1 (ET-1), E-selectin, P-selectin, vascular cell adhesion molecule (VCAM), intercellular cell-adhesion molecule-1, total nitric oxide concentration (NOx), oxidized low-density lipoprotein (Oxd-LDL), superoxide dismutase, total antioxidant capacity (TAOC), tumor necrosis factor-alpha (TNFα), and C-reactive protein (CRP) at baseline and 12 weeks. Laboratory and statistical analysis were done by staff blinded to group allocation.

Results: Eighty-two patients (of the 110 patients recruited) completed the study. The mean age was 53.1 ± 10.6 and 51.9 ± 10.7 years in enhanced standard care and Yoga-CaRe group, respectively. At 12 weeks, Yoga-CaRe significantly reduced ADMA, ET-1, and ICMA-1 than the enhanced standard care group. Although E-selectin and VCAM at 12 weeks were reduced in both groups, enhanced standard care had a significantly higher reduction than the Yoga-CaRe group. Among markers of oxidative stress, TAOC increased in the Yoga-CaRe group. We found no difference in eNOS, NOx, P-selectin, TNFα, CRP, and Oxd-LDL between the two groups.

Conclusion: Yoga-CaRe improved the endothelial function (through a reduction in ET-1 and modulating adhesion molecules) and enhanced antioxidant capacity.

Background: Multimodal approach of psychotherapy has been found to be effective for managing the excessive use of technology. Yoga, a holistic mind-body therapy, has been observed to be a useful adjuvant in managing substance use disorders. Yoga is also known to reduce stress and enhance overall well-being. The aim of this study was to examine whether yoga as an adjuvant treatment to psychotherapy is better than psychotherapy alone in reducing dysfunction and severity due to excessive technology use.

Methods: A two-arm randomized controlled prospective study design was followed with assessor blinding and allocation concealment. Thirty consenting young adults (22 males), scoring above 36 on the Internet Addiction Test, were randomly allocated to either: Group A = psychotherapy + yoga or Group B = psychotherapy alone. Both groups received 8 sessions of psychotherapy in the 1^st month. In addition, Group A received additional 10 sessions a specific yoga program (by trained professionals). After that, monthly booster sessions (supervised yoga sessions performed with direct one-on-one contact with the yoga therapist) were organized and post-assessment was conducted at 12 weeks. Each subject was assessed using the Internet Addiction Test-Short Form, Internet Gaming Disorder Scale-Short Form, Smartphone Addiction Scale-Short Version, and Kessler Psychological Distress Scale at baseline and after 12 weeks.

Results: As compared to Group B, Group A had significantly reduced Internet use (F = 5.61, P = 0.02, η_p ² = 0.17), smartphone use (F = 4.76, P = 0.03, η_p ² = 0.15), psychological distress (F = 7.71, P = 0.01, η_p ² = 0.22), and weekday use (Z = -2.0, P = 0.05, η_p ² = 0.15) along with enhanced treatment adherence and retention.

Conclusion: Yoga as an adjuvant therapy with multimodal psychological intervention for excessive use of technology was found to be effective. This carries clinical implications for mental health professionals.

Background: Traditional yoga texts describe "cross nostril breathing," with inhalation and exhalation through different nostrils. Previous research reported no clear differences in oxygen consumption during uninostril breathing (i.e., inhalation and exhalation through the same nostril), hence not supporting right and left uninostril breathing as activating or relaxing, respectively, with no research on oxygen consumed in "cross nostril breathing."

Methods: Oxygen consumed during "cross nostril breathing" was measured in healthy participants (n = 47, males, 26.3 ± 6.4 years). Five sessions (viz., right nostril inspiration yoga breathing [RNIYB], left nostril inspiration yoga breathing [LNIYB], alternate nostril yoga breathing [ANYB], breath awareness (BAW), and quiet rest (QR) were conducted on separate days in random order. Sessions were 33 min in duration with pre, during, and post states.

Results: Volume of oxygen consumed (VO₂) and carbon dioxide eliminated (VCO₂) increased during RNIYB (9.60% in VO₂ and 23.52% in VCO₂), LNIYB (9.42% in VO₂ and 21.20% in VCO₂) and ANYB (10.25% in VO₂ and 22.72% in VCO₂) with no significant change in BAW and QR. Diastolic blood pressure decreased during BAW and QR and after all five sessions (P < 0.05; in all cases). All comparisons were with the respective preceding state.

Conclusion: During the three yoga breathing practices, the volume of oxygen consumed increased irrespective of the nostril breathed through, possibly associated with (i) conscious regulation of the breath; (ii) attention directed to the breath, and (iii) "respiration-locked cortical activation." Restriction of the study to males reduces the generalizability of the findings.

Infertility, a widespread medical condition affecting numerous couples globally, persists as a challenge despite advances in assisted reproductive technologies (ARTs), often burdened by financial, physical, and emotional strains. Complementary and alternative approaches, notably yoga, have garnered attention for potentially enhancing fertility outcomes. Studies reveal yoga's influence on factors contributing to infertility, including reduced oxidative stress (OS) and oxidative DNA damage (ODD). OS, linked to mutagenic base formation, higher malondialdehyde levels, abnormal methylation, and altered gene expression, can impair sperm genome integrity. Yoga's efficacy is evident in lowering OS, positively affecting signal transmission, gene expression, and physiological systems. Furthermore, yoga has a positive impact on addressing the dysregulation of apoptosis, resulting in improved processes such as spermatogenesis, sperm maturation, and motility, while also reducing DNA fragmentation. OS correlates with genome-wide hypomethylation, telomere shortening, and mitochondrial dysfunction, contributing to genome instability. Yoga and meditation significantly reduce OS and ODD, ensuring proper reactive oxygen levels and preserving physiological systems. The review explores potential mechanisms underlying yoga's positive impact on infertility, including enhanced blood flow, reduced inflammation, relaxation response, and modulation of the hypothalamic-pituitary-adrenal axis. Furthermore, a comprehensive review of the literature reveals substantial evidence supporting the positive effects of yoga on infertility factors. These include oxidative stress (OS), oxidative DNA damage (ODD), epigenetic changes, hormonal balance, ovarian function, menstrual irregularities, and stress reduction. In summary, yoga emerges as a promising adjunctive therapy for infertility, demonstrating the potential to mitigate key factors influencing reproductive success. Although preliminary evidence indicates the positive effects of yoga on infertility, further clinical research is imperative to define specific benefits, molecular mechanisms associated, optimal protocols, and long-term effects in infertility treatment plans.

Background: Depression has been expected to be the second-leading cause of disability, followed by autism, attention and hyperactivity disorder, and learning disorder. Yoga therapy has found to be beneficial in managing psychiatric disorders.

Aim: The present study undertakes a scoping review of research on yoga therapy in psychiatric disorders among children and adolescents.

Methods: Online database was used to identify papers published 2004-2023, from which we selected 11 publications from the United States, Canada, Iran, India, and Australia that used yoga therapy as a primary outcome variable among participants aged 3 years or older.

Results: The papers reviewed were randomized controlled trials. All studies examined yoga therapy, but one study used mindfulness-based therapy and used few techniques of yoga therapy. The studies examined the effect of yoga therapy on early childhood and adolescence on various psychiatric symptoms such as stress, inattention, hyperactivity, anxiety, depression, and many more.

Conclusion: While the quality of studies is generally high, research on yoga therapy among children and adolescents with psychiatric disorders would benefit from careful selection of methods and reference standards, suitability for yoga therapy, and prospective cohort studies linking early childhood exposures with yoga therapy outcomes throughout childhood and adolescence.

Purpose: Untreated stress, anxiety, and depression during the perinatal period can lead to adverse maternal and infant outcomes. Yoga, the practice of body-mind-spirit techniques has been shown to reduce stress, anxiety, and depression.

Aims: The aim of the study was to examine the feasibility and limited efficacy of the 4-week practice of pregnancy tele-yoga module (PTYM) delivered and monitored through an online platform.

Methodology: A multicentric, open-label, exploratory study was conducted in the antenatal clinics (ANCs) of three tertiary care hospitals in India. Pregnant women between 13 and 32 weeks of gestation were invited to participate. PTYM was taught by the trained research staff. A YouTube link demonstrating the PTYM developed by the researchers was shared with consenting participants. Using the Yoga Performance Assessment (YPA), research staff monitored the online performance of the PTYM. Pre- and postintervention, women were assessed using the Depression, Anxiety, and Stress Scale-21 (DASS-21).

Results: Preintervention, among 162 consented pregnant women, anxiety (62.34%) was the most common mental health condition, followed by stress (55.55%) and depression (45.67%). YPA at the end of week 1, week 2, week 3, and week 4 was 19.45, 21.35, 24.15, and 28.45, respectively. Postintervention anxiety, stress, and depression persisted in 19.78%, 11.44%, and 10.41% of women. Pregnant women with stress (DASS-21 ≥15; n = 90), anxiety (DASS-21 ≥8; n = 101), and depressive (DASS-21 ≥10; n = 74) symptoms after undergoing 4 weeks of PTYM reported significant reduction in the scores.

Conclusion: The current study demonstrated the feasibility and limited efficacy of PTYM in ANCs of a tertiary care hospital in India.