The characteristics and effectiveness of pregnancy yoga interventions: a systematic review and meta-analysis

Effects of Nurse-Led e-Health Interventions on the Health-Related Outcomes of Pregnant Women: A Systematic Review

BACKGROUND

Pregnancy is a special time for women that involves substantial emotional, physical, social, and family changes, which can lead to physical and psychological harm. The rapid development of e-health has provided a favourable platform for managing health-related outcomes in pregnant women, and nurses are the professional group that is most likely to provide e-health services. Nurse-led e-health interventions have attracted increasing attention, but their effects are uncertain.

OBJECTIVE

To identify the effectiveness of nurse-led e-health interventions in improving health-related outcomes in pregnant women.

DESIGN

A systematic review.

DATA SOURCES

The PubMed, PsycINFO, EMBASE, CINAHL, ProQuest, MEDLINE, Scopus, Web of Science and Cochrane Library databases were searched from inception to March 2023.

METHODS

Two reviewers independently assessed study eligibility and extracted data. The Cochrane risk of bias tool was used for quality assessment. The findings of this review are presented using a narrative synthesis.

RESULTS

This review included 14 studies involving 2016 participants. Three out of five studies reported that nurse-led e-health interventions significantly reduced depressive symptoms. Four studies reported significant improvements in stress and self-efficacy after the intervention. Two studies reported significant improvements in anxiety symptoms, self-management ability, and quality of life after the intervention. One study showed that weight gain and physical activity significantly improved after the intervention. Due to the heterogeneity in the included studies, no meta-analysis was conducted.

CONCLUSIONS

Nurse-led e-health interventions may be beneficial for improving anxiety symptoms, depressive symptoms, stress, self-efficacy, weight gain, self-management ability, physical activity, and quality of life in pregnant women.

RELEVANCE TO CLINICAL PRACTICE

Nurse-led e-health interventions could provide individualised, economic, interactive, and convenient nursing modes for pregnant women. Rigorous and high-quality evidence confirming the long-term effects of these interventions on pregnant women is necessary.

NO PATIENT OR PUBLIC CONTRIBUTION

The patients had no direct involvement in the present study.

REGISTRATION NUMBER

PROSPERO registration ID: CRD42023401973.

Maternal Prenatal Stress and the Offspring Gut Microbiome: A Cross-Species Systematic Review

The prenatal period is a critical developmental juncture with enduring effects on offspring health trajectories. An individual's gut microbiome is associated with health and developmental outcomes across the lifespan. Prenatal stress can disrupt an infant's microbiome, thereby increasing susceptibility to adverse outcomes. This cross-species systematic review investigates whether maternal prenatal stress affects the offspring's gut microbiome. The study analyzes 19 empirical, peer-reviewed research articles, including humans, rodents, and non-human primates, that included prenatal stress as a primary independent variable and offspring gut microbiome characteristics as an outcome variable. Prenatal stress appeared to correlate with differences in beta diversity and specific microbial taxa, but not alpha diversity. Prenatal stress is positively correlated with Proteobacteria, Bacteroidaceae, Lachnospiraceae, Prevotellaceae, Bacteroides, and Serratia. Negative correlations were observed for Actinobacteria, Enterobacteriaceae, Streptococcaceae, Bifidobacteria, Eggerthella, Parabacteroides, and Streptococcus. Evidence for the direction of association between prenatal stress and Lactobacillus was mixed. The synthesis of findings was limited by differences in study design, operationalization and timing of prenatal stress, timing of infant microbiome sampling, and microbiome analysis methods.

Benefits of yoga in pregnancy: a randomised controlled clinical trial

OBJECTIVES

Modern obstetrics confronts a rise in caesarean sections (CS). Prevention of unnecessary primary CS is a global priority. Women face intense psychological and physiological challenges during childbirth. Fear and anxiety during labour reduce women's self-confidence and empowerment. Yoga is a body-mind practice that lowers maternal fear and anxiety and helps relax pelvic floor muscles during labour. The study examined whether yoga practice in pregnancy influences CS rate in primiparous singleton pregnant women, labour pain intensity and epidural analgesia requests at delivery ward admission.

METHODS

We conducted a single-blind, randomised, controlled clinical trial comparing yoga to standard obstetric care in pregnancy. A total of 214 participants were randomised, 106 in yoga and 108 in controls. Weekly 90-min yoga classes were led by a certified yoga teacher's supervision. Every pregnant woman in the interventional group completed 12 yoga sessions.

RESULTS

Yoga group had a lower total CS due to less frequent In-labour CS (p=0.004) and a higher rate of spontaneous vaginal birth (p=0.009). They experienced less pain intensity during labour (p<0.001), and there was no difference in epidural analgesia requests.

CONCLUSIONS

Engaging in yoga during pregnancy reduces the rate of In-labour CS, decreases discomfort and encourages spontaneous vaginal birth in primiparous singleton pregnant women.

Benefits of Complementary Therapies During Pregnancy, Childbirth and Postpartum Period: A Systematic Review

BACKGROUND/OBJECTIVES

The current trend in maternal health is to foster more natural and less medicalized therapies, with increasing interest in complementary therapies. This study has analyzed the benefits of complementary therapies during pregnancy, delivery and the postpartum period.

METHODS

A paired systematic review was carried out (PROSPERO: CRD42024543981). The following databases were consulted: PubMed, Scopus, Web of Science and CINAHL. Inclusion criteria were randomized clinical trials about complementary therapies in women during pregnancy, delivery and/or the postpartum period. The risk of bias of the clinical trials was evaluated using the revised Cochrane Risk of Bias tool for randomized trials version 2 (RoB-2).

RESULTS

A total of 1684 studies were found, with a final selection of 17. The most studied symptom was pain. Hydrotherapy, perinatal Swiss ball exercises, acupressure, virtual reality and foot reflexology provided a significant reduction in pain during labor. Similarly, aromatherapy, electroacupuncture and massage have shown significant benefits in pain management after Cesarean. Yoga, when practiced during pregnancy, effectively reduces anxiety and depression, with similar benefits observed when practiced during the postpartum period.

CONCLUSIONS

Complementary therapies improve pain, anxiety and depression management across maternal health phases.

Yoga-based lifestyle intervention for antenatal depression (YOGA-D): study protocol for a pilot randomized controlled trial

Background

Depression during pregnancy is associated with pre-term labor, low birthweight, post-partum depression and adverse child outcomes. There are concerns about the safety of anti-depressant medications during pregnancy. Many pregnant women with antenatal depression are neither aware about their depression nor do they have access to non-pharmacological interventions for depression. Evidence suggests that pre-natal yoga can improve antenatal depression. Yoga is native to the Indian culture and women can practice yoga as a 'self-care' intervention with minimal training. There is no study till date on the efficacy of yoga on antenatal depression in pregnant women in a low resource (rural) setting in India. This pilot randomized controlled trial aims to study the feasibility, acceptability, and preliminary efficacy of a YOGA-based lifestyle intervention for Antenatal Depression (YOGA-D) in Maharashtra, India.

Methods

We will undertake a single-blind individual randomized parallel group-controlled pilot trial with 1:1 allocation ratio. Adult women with 12-26 weeks of pregnancy, without any obstetric or medical complications will be randomly allocated to either the active intervention group (Yoga-Sanskar (YS)) or the Enhanced Usual Care (EUC) group. Trained yoga instructors will teach a pre-defined yoga sequence to the participants in the YS arm. In the EUC arm, participants will receive a single session of health education. We will assess trial feasibility using the recruitment, retention, and study completion rates. The primary outcome of depression will be measured using the translated Marathi version of the Patient Health Questionnaire-9. Assessments will be at the baseline, three-months post-randomization, and post-delivery.

Discussion

This study will help us to understand the barriers in implementation of a yoga-based intervention for antenatal depression in a low-resource/rural setting in Maharashtra, India. Based on the learnings of this pilot trial, we plan to undertake an explanatory randomized controlled trial in the next few months.

Registration

CTRI ( CTRI/2024/05/067176; 10/05/2024).

Prenatal anxiety recognition model integrating multimodal physiological signal

Anxiety among pregnant women can significantly impact their overall well-being. However, the development of data-driven HCI interventions for this demographic is often hindered by data scarcity and collection challenges. In this study, we leverage the Empatica E4 wristband to gather physiological data from pregnant women in both resting and relaxed states. Additionally, we collect subjective reports on their anxiety levels. We integrate features from signals including Blood Volume Pulse (BVP), Skin Temperature (SKT), and Inter-Beat Interval (IBI). Employing a Support Vector Machine (SVM) algorithm, we construct a model capable of evaluating anxiety levels in pregnant women. Our model attains an emotion recognition accuracy of 69.3%, marking achievements in HCI technology tailored for this specific user group. Furthermore, we introduce conceptual ideas for biofeedback on maternal emotions and its interactive mechanism, shedding light on improved monitoring and timely intervention strategies to enhance the emotional health of pregnant women.

Effects of COVID-19 infection risk perception on depressive symptoms among pregnant women in different periods of the COVID-19 pandemic in China: A mediation model

OBJECTIVE

The study investigated the mediation mechanisms between coronavirus disease 2019 (COVID-19) infection risk perception and depressive symptoms among pregnant women during the different periods of the COVID-19 pandemic.

METHODS

Study data were derived from a sample of 463 pregnant women in Hubei Province, the province with the most severe COVID-19 outbreak in China. Data were collected in two phases (during and after the acute phase of the COVID-19 pandemic) using the COVID-19 infection risk perception scales, the Edinburg Postnatal Depression Scale (EPDS), the Perceived Stress Scale (PSS), and the Peritrauma Distress Inventory (PDI). Mediation model analysis was used for data analysis, overall and by groups.

RESULTS

The level of depressive symptoms among pregnant women after the acute phase of the COVID-19 pandemic was moderate (median, 9.00 [25th percentile, 75th percentile = 5.00, 12.00]), higher than the acute group (median, 7.00 [25th percentile, 75th percentile = 4.50, 10.00]). Perceived stress and traumatic stress fully mediated the relationship between infection worry (total indirect effect, 0.39 [95% confidence interval, 0.24-0.54])/infection possibility (total indirect effect, 0.41 [95% confidence interval, 0.22-0.61]) and depressive symptoms among pregnant women during the acute phase of the COVID-19 pandemic, whereas the relationship was only fully mediated by perceived stress after the acute pandemic.

CONCLUSIONS

Effects of risk perception on depressive symptoms varied by periods of COVID-19. These findings have important implications for developing effective prevention and early psychoeducational intervention strategies for pregnant women with a high risk of depressive symptoms during different periods of emerging infectious diseases.

The Effect of Yoga Practice on Labor Pain: A Systematic Review and Meta-Analysis

Background

Labor pain management is a critical aspect of midwifery care and an essential purpose of childbirth-related care. There is a need for comprehensive results on relevant non-therapeutic methods of reducing labor pain. This systematic review and meta-analysis study was conducted to investigate the effect of yoga practice on labor pain.

Material and Methods

We performed a systematic literature search from SCOPUS, PubMed, Web of Science, and Science Direct for relevant studies from January 1, 1990 to June 2, 2022. We selected published quasi-randomized and randomized controlled trial studies that evaluated the effect of yoga practice on labor pain. Quality research was applied. We pooled the Standardized Mean Dfference (SMD) of labor pain in pregnant women with and without yoga practice during pregnancy using a random-effects model at 95% Confidence Intervals (CIs).

Results

Nine studies including 660 women were included in the meta-analysis. Pregnant women in the yoga practice group experienced statistically significantly low labor pain at the beginning of the active phase compared to the control group (SMD: -1.10, 95% CI: -1.61, -0.58, p < 0.001; I2 = 89%). Yoga interventions also reduced the intensity of labor pain in active (SMD: -1.32, 95% CI: -2.03, -0.60, p < 0.001; I2 = 92%) and transition (SMD: -1.93, 95% CI: -2.87, -0.99, p < 0.001; I2 = 92%) phases compared to the control group, respectively.

Conclusions

The results of the study showed that yoga practice during pregnancy reduces the intensity of labor pain in different labor phases. However, these findings should be considered cautiously due to the substantial heterogeneity between studies.

Yoga among Antenatal Women: A Cross-sectional Study at Rapti Provincial Hospital, Nepal

Context

Yoga practice during pregnancy offers numerous benefits for maternal and fetal health, yet its prevalence and acceptance among pregnant women in Nepal remain understudied.

Aim

This study aimed to assess the prevalence of yoga practice and its acceptance as part of antenatal care (ANC) among pregnant women attending ANC at Rapti Provincial Hospital, Dang, Nepal.

Settings and Design

A hospital-based cross-sectional study was conducted at the ANC unit of Rapti Provincial Hospital, involving pregnant women attending ANC visits.

Methods

Data were collected through face-to-face interviews using a semi-structured questionnaire covering sociodemographic variables, family and health history, and yoga practice.

Statistical Analyses

Descriptive statistics, Chi-square tests, and multivariate logistic regression were used for statistical analysis.

Results

Among 227 respondents, 16.7% practiced yoga during pregnancy, with 50.2% perceiving acceptance of yoga in ANC. The practice and acceptability of yoga in pregnancy were significantly associated with age, ethnicity, age at marriage, husband's age, employment status, husband's employment status, and prepregnancy yoga practice in bivariate analysis. While taking those factors in multivariate analysis, practice was found to be associated with husbands' employment status and prepregnancy yoga practice and acceptability was found to be associated with ethnicity, husbands' employment status, and prepregnancy yoga practice.

Conclusions

The study revealed the low yoga prevalence among pregnant Nepalese women, necessitating targeted interventions for its promotion during pregnancy. Integrating yoga into routine ANC could enhance maternal and fetal outcomes by educating women about its benefits and fostering supportive environments for practice.

Effect of Prenatal Yoga versus Moderate-Intensity Walking on Cardiorespiratory Adaptation to Acute Psychological Stress: Insights from Non-Invasive Beat-to-Beat Monitoring

We recently reported enhanced parasympathetic activation at rest throughout pregnancy associated with regular yoga practice. The present study presents a secondary analysis of data collected within a prospective cohort study of 33 pregnant women practicing yoga once weekly throughout pregnancy and 36 controls not involved in formal pregnancy exercise programs. The objective was to assess the impact of prenatal yoga on the autonomic nervous system stress response. Healthy pregnant women with singleton pregnancies were recruited in the first trimester. There was no significant difference in the maternal body mass index (BMI) between the yoga group and the controls (24.06 ± 3.55 vs. 23.74 ± 3.43 kg/m2, p = 0.693). Women practicing yoga were older (28.6 ± 3.9 vs. 31.3 ± 3.5 years, p = 0.005) and more often nulliparous (26 (79%) vs. 18 (50%), p = 0.001). We studied heart rate variability (HRV) parameters in the time domain (SDNN, standard deviation of regular R-R intervals, and RMSSD, square root of mean squared differences of successive R-R intervals) and frequency domain (ln(LF/HF), natural logarithm of low-frequency to high-frequency power), as well as synchronization indices of heart rate, blood pressure and respiration during and immediately following acute psychological stress of a standardized mental challenge test. Measurements were performed once per trimester before and after yoga or a 30 min moderate-intensity walk. Statistical comparison was performed using three-way analyses of variance (p < 0.05 significant). Time domain HRV parameters during and following mental challenge in the yoga group were significantly higher compared to the controls regardless of the trimester (F = 7.22, p = 0.009 for SDNN and F = 9.57, p = 0.003 for RMSSD, respectively). We observed no significant differences in the yoga group vs. the controls in terms of ln(LF/HF) and synchronization indices. Regular prenatal yoga practice was associated with a significantly reduced sympathetic response to mental challenge and quicker recovery after acute psychological stress. These effects persisted throughout pregnancy with regular practice.

The effects of yoga-based interventions on postnatal mental health and well-being: A systematic review

Background

The postnatal period is a critical time for maternal mental health, presenting unique challenges and vulnerabilities. Identifying effective and accessible strategies to improve postnatal mental health and well-being is therefore crucial and could have substantial benefits for both mothers and babies, alongside broader implications for healthcare systems. Yoga is a potential intervention that has demonstrated notable benefits; however, a gap exists in systematically evaluating the existing literature on postnatal yoga-based interventions. This systematic review addresses this, aiming to comprehensively assess the impact of postnatal yoga on maternal mental health and well-being.

Methods

Six databases were searched using keywords "yoga", "yogic", "postnatal", "postpartum", "perinatal", "maternal", "mother*". Articles were considered if they were quantitative and evaluated a yoga or yoga-based intervention in postnatal samples. Study outcomes were extracted and synthesised descriptively. A quality assessment of studies was also conducted.

Findings

Of the 383 non-duplicated records that were identified, nine met criteria for full-text review. Only 6 met the inclusion criteria and so were included in the review. Across the 6 studies within this review, data from 377 adult women were included and looked at the outcomes of women in the USA, Northern Ireland, Taiwan and Turkey. The findings of the studies suggest that taking part in postnatal yoga is associated with decreased symptoms of depression, an increase in psychological well-being and quality of life.

Key conclusions

Yoga-based interventions may offer a promising and effective intervention for maternal mental health and well-being. However, due to the limited number of studies, and a lack of consistency in study design and measures, more high-quality research is required to establish these effects and explore the potential benefits on other aspects of maternal well-being and infant outcomes.

The Pregnancy Tele-yoga Module to Combat Stress, Anxiety, and Depression Associated with Pregnancy: An Exploratory Open-label Multicentric Study

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.

Development and content validation of yoga module for the mental health of NICU mothers

BACKGROUND

Postnatal yoga has been found to be effective for maternal mental health management. But a validated yoga module for the mental health of early postpartum mothers with infants admitted to the Neonatal Intensive Care Unit (NICU) is lacking.

AIM

To design and validate a yoga module for the mental health of early postpartum mothers having infants admitted to the NICU.

MATERIALS AND METHODS

First phase: A yoga module was designed through a review of published research articles and yogic texts for NICU mothers. Second phase: thirty-eight yoga experts validated the yoga module. Lawshe's formula was used to calculate each item's content validity ratio (CVR). The intra-class correlation coefficient was determined for the validated yoga module. Third phase: The validated yoga module was pilot-tested with a sample size of 20 NICU mothers.

RESULTS

Thirty-eight yoga experts validated the yoga module for NICU mothers. Thirteen practices included in the module indicated good content validity (cutoff value: 0.316). The module's content validity index (CVI) and intra-class correlation coefficient were 0.672 and 0.924, respectively. Ten days of practicing the yoga module resulted in a significant reduction in maternal stress levels in the yoga group (p < 0.001) compared to the control group (p = 0.427).

CONCLUSION

The present study suggests good content validity of the yoga module for the mental health of NICU mothers. However, future randomized controlled trials must be carried out to determine both the feasibility and clinical efficacy of the Yoga Module for NICU mothers.

Effectiveness of antenatal yoga in reducing intensity of labour pain: A systematic review and meta-analysis

Background

Yoga during pregnancy was found to be beneficial in various aspects of pregnancy including pain management during the time of labour. The current systematic review and meta-analysis aims to assess the effectiveness of antenatal yoga practices in reducing pain during the time of labour.

Methods

We searched electronic databases such as PubMed, Embase, Cochrane Library, and Web of Science, till January 2023. Randomized controlled trials (RCTs) which measured the effects of antenatal yoga practices on pain management during labour were included. The main outcome was the pain intensity measured with any validated questionnaire. The methodological quality of included studies was evaluated by using a risk-of-bias assessment tool developed by the Cochrane Collaboration. For the effect size, standardized mean differences (SMDs) with a 95% confidence interval (CI) were generated with a random effect model using R software (version 4.2.2).

Results

Eight studies including 576 antenatal women between the age of 14 and 40 years were included. Results of this meta-analysis showed that yoga is effective in reducing labour pain (SMD: -1.34 95% of CI: -1.86, -0.81) with significant heterogeneity among the studies (I2 73%, p < 0.0008).

Conclusion

Antenatal yoga can be a promising intervention in the field of obstetrics to reduce the intensity of labour pain. However, we are still in need of RCT with a large sample size to confirm the reliability of the present meta-analysis.

Physical Activity and Self-Perception of Mental and Physical Quality of Life during Pregnancy: A Systematic Review and Meta-Analysis

Self-perception of health status (quality of life) is considered one of the best indicators of health and well-being. However, during pregnancy, it could be impacted not only by physiological and anatomical changes, but by poor lifestyle habits like high sedentary behaviour or bad nutrition. This study assesses the effects of physical activity RCT interventions during pregnancy on both mental and physical components of quality of life. A systematic review and two meta-analyses were performed (PROSPERO registration number: CRD42022370467). Of the 207 articles captured both in English and Spanish, seven articles were deemed eligible for inclusion. The two analyses performed found that physically active pregnant women had better scores of mental self-perception of quality of life (z = 2.08, p = 0.04; SMD = 0.34, 95% CI = 0.02, 0.67, I2 = 76%, Pheterogeneity = 0.0004) and in physical self-perceived health status (z = 2.19, p = 0.03; SMD = 0.33, 95% CI = 0.03, 0.63, I2 = 71%, Pheterogeneity = 0.002) compared to control group pregnant women. Physical activity interventions could potentially increase mental and physical self-perception of quality of life during pregnancy.

Primiparous women's expectations and experiences of early labour: A qualitative study

OBJECTIVES

To gain a deeper understanding of primiparous women's preparation for early labour as well as their expectations and experiences of symptoms of onset of labour.

METHODS

A qualitative study using focus group discussion was conducted with n = 18 first-time mothers within the first six months of giving birth. Discussions were transcribed verbatim and coded and summarised into themes by two researchers using qualitative content analysis.

RESULTS

The statements of the participants revealed four themes: 'Preparing for the unpredictable', 'Expectations and reality', 'Perception and wellbeing' and 'Experiencing the beginning of birth'. Many women could not distinguish the preparation for early labour from that for the whole birth. Relaxation techniques to prepare for early labour were found to be very helpful. For some women, it was a big challenge that expectations often did not correspond to the experienced reality. Pregnant women faced many different physical and emotional symptoms of onset of labour with striking variability. Emotions ranged from positively excited to having fears. Not being able to sleep for hours was a huge problem for the labour process of some women. While early labour at home was experienced positively, early labour in hospital was sometimes difficult, because women had the feeling of being in the second rank.

CONCLUSION

The study clearly identified the individual character of experiencing onset of labour and early labour. The variety of experiences highlighted the need for individualised, woman-centred early labour care. Further research should investigate new paths for assessing, advising, and caring for women during early labour.

Prenatal Yoga-Based Interventions May Improve Mental Health during Pregnancy: An Overview of Systematic Reviews with Meta-Analysis

An overview of systematic reviews with meta-analysis was developed to summarize evidence on the effectiveness of prenatal yoga-based interventions on pain, psychological symptoms, and quality of life during pregnancy. CINAHL (via EBSCOhost), Embase, PubMed, SPORTDiscus (via EBSCOhost), and the Cochrane Library were searched from inception to 15 December 2022. The intervention of interest was any prenatal yoga-based intervention. Pain, psychological symptoms, and quality of life were considered as outcome measures. The methodological quality of systematic reviews was judged using AMSTAR 2. The primary study overlap among systematic reviews was evaluated, building a citation matrix and calculating the corrected covered area (CCA). A total of ten systematic reviews, including fifteen meta-analyses of interest and comprising 32 distinct primary clinical trials, were included. Meta-analyses on pain and quality of life were not found. Most meta-analyses (93%) showed that prenatal yoga-based interventions are more effective than control interventions in reducing anxiety, depression, and stress symptoms. However, the overall methodological quality of systematic reviews was judged as critically low, and primary study overlap among systematic reviews was very high (CCA = 16%). Altogether, prenatal yoga-based interventions could improve the mental health of pregnant women, although due to the important methodological flaws that were detected, future systematic reviews should improve their methodological quality before drawing firm conclusions on this topic.

Reduction of anxiety and pain in primigravida mothers with modified Iyengar yoga: A clinical study

BACKGROUND

In primigravidas, childbirth, although physiological can be a frightening event. Two factors that accompany labor are anxiety and pain. This study aims to investigate the benefits of Iyengar yoga for anxiety and labor pain in primigravida women.

MATERIAL AND METHODS

The study involved 59 female primigravida subjects, which were divided into 29 controls (without the provision of yoga exercises) and 30 people who received Iyengar yoga exercise. Anxiety and the degree of labor pain will be measured using the Hamilton Scale Rating for Anxiety (HSRA) and visual analog scale (VAS), respectively.

RESULTS

Iyengar yoga significantly reduced VAS and HARS values compared to controls (p < 0.05).

CONCLUSION

It was concluded that Iyengar yoga in primigravida women was beneficial in reducing labor pain and anxiety. Thus, the Iyengar yoga technique can be a method for supporting the success and safety of labor.

Feasibility, acceptability, and preliminary efficacy of yoga to improve maternal mental health and immune function during the COVID-19 crisis (Yoga-M2 trial): a pilot randomized controlled trial

Introduction

Women are vulnerable during pregnancy as they experience multiple physical and psychological problems which can lead to stress and poor quality of life ultimately affecting the development of the fetus and their health during and after pregnancy. Prior evidence suggests that prenatal yoga can improve maternal health and well-being and can have a beneficial effect on immune system functioning. To date, no study has been conducted in a rural, low-resource setting in India to assess the feasibility, acceptability, and preliminary efficacy of a yoga-based intervention on perceived stress, quality of life, pro-inflammatory biomarkers, and symptoms of upper respiratory tract infections.

Methods

To address this gap and assess whether a yoga-based intervention could improve maternal mental health and immunity during the COVID-19 crisis (Yoga-M2 trial), a single-blind individual randomized parallel group-controlled pilot trial with a 1:1 allocation ratio was implemented. We randomly allocated 51 adult pregnant women, with gestational age between 12-24 weeks in the Yoga-M2 arm (n = 25) or the enhanced usual care arm (EUC) (n = 26). Feasibility and acceptability were assessed using the process data and In-Depth Interviews (IDIs) with the trial participants and yoga instructors. Multiple linear regression was used to compare follow-up scores for quantitative outcomes.

Results

A three-month follow-up assessment was completed for 48 out of 51 participants (94.12%). We did not find any statistically significant difference between both arms in total Perceived Stress Scale scores, quality of life (Eq-5D-5L index), and serum C Reactive Protein levels at the three-month follow-up assessment. The critical barriers to practicing yoga were lack of knowledge about the benefits of yoga, lack of 'felt need' to practice yoga, lack of time to practice, lack of space, lack of transport, and lack of peer group to practice yoga. Despite this, women who regularly practiced yoga described the benefits and factors which motivated them to practice regularly.

Discussion

The learnings from this trial will help design the explanatory trial in the future and the study findings can also be used by the primary health care system to deliver yoga-based interventions in the newly created health and wellness centers.

Trial registration

This trial was prospectively registered with the Clinical Trials Registry of India on 25 January 2022. https://www.ctri.nic.in/Clinicaltrials/showallp.php?mid1=65173&EncHid=&userName=CTRI/2022/01/039701. Trial registration number: CTRI/2022/01/039701.