NCT07435363

Brief Summary

This study is designed as a randomized controlled trial (RCT) focused on improving breastfeeding outcomes among primiparous mothers in the postpartum period. Although the World Health Organization (WHO) recommends exclusive breastfeeding for the first six months as the ideal nutritional source for newborns, the rate in Turkey (41% according to TDHS 2018) lags behind global targets (50-70%). Early cessation of breastfeeding is generally associated with mothers' inability to adapt to physical and psychological challenges. In particular, anxiety and stress experienced during the postpartum period lead to the development of a perceived insufficient milk supply, which negatively affects the acquisition of breastfeeding self-efficacy. In this context, this study investigates the potential of a supportive intervention facilitating stress management and relaxation on breastfeeding sustainability. Participants will be randomized into three groups: Intervention Group I (Online Breastfeeding Education + Breath-Based Yoga), Intervention Group II (Online Breastfeeding Education Only), and the Control Group (Routine Care). The interventions will be delivered remotely via Google Meet over a maximum period of seven weeks (3 weeks of breastfeeding education + 4 weeks of yoga practice). The primary objective of the study is to evaluate whether these structured interventions significantly improve maternal breastfeeding self-efficacy and reduce the perception of insufficient milk. Additionally, secondary outcomes will assess the impact on maternal anxiety levels. To ensure internal validity and isolate the intervention effect, mothers at high risk of postpartum depression (EPDS score \> 13) are excluded from the study. The Hypotheses of the Study Each hypothesis will be tested independently: H₀: The pre- and post-intervention measurement differences do not significantly differ between groups. H₁: The pre- and post-intervention measurement differences significantly differ between groups (p \< 0.05). If a significant difference is detected, H₀ will be rejected and H₁ will be accepted. Multiple comparisons will be evaluated using the Holm-Bonferroni correction to control the Type I error rate.

  • H1a: Online breastfeeding education provided to primiparous mothers positively affects their anxiety levels.
  • H1b: Online breastfeeding education provided to primiparous mothers positively affects their breastfeeding self-efficacy.
  • H1c: Online breastfeeding education provided to primiparous mothers positively affects their perceived insufficient milk supply.
  • H2a: Breath-based yoga-supported online breastfeeding education provided to primiparous mothers positively affects their anxiety levels.
  • H2b: Breath-based yoga-supported online breastfeeding education provided to primiparous mothers positively affects their breastfeeding self-efficacy.
  • H2c: Breath-based yoga-supported online breastfeeding education provided to primiparous mothers positively affects their perceived insufficient milk supply.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
90

participants targeted

Target at P50-P75 for not_applicable

Timeline
12mo left

Started Jun 2026

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress4%
Jun 2026Jun 2027

First Submitted

Initial submission to the registry

February 20, 2026

Completed
7 days until next milestone

First Posted

Study publicly available on registry

February 27, 2026

Completed
3 months until next milestone

Study Start

First participant enrolled

June 1, 2026

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2027

Last Updated

April 28, 2026

Status Verified

April 1, 2026

Enrollment Period

6 months

First QC Date

February 20, 2026

Last Update Submit

April 22, 2026

Conditions

Keywords

breastfeedingbreastfeeding educationbreastfeeding self-efficacyperceived insufficient milk supplyyogabreath-based yogaprimiparous mothers

Outcome Measures

Primary Outcomes (2)

  • Breastfeeding Self-Efficacy Score (BSES-SF)

    Measured using the Breast-Feeding Self-Efficacy Scale-Short Form (BSES-SF). The BSES-SF is a 14-item, 5-point Likert scale (score range: 14 to 70). Higher scores indicate higher levels of breastfeeding self-efficacy. The aim is to detect significant differences in BSES-SF scores between the intervention and control groups across the three time points (T1, T2, T3).

    Baseline (Postpartum Week 2), Second Measurement (Postpartum Week 5), and Final Measurement (Postpartum Week 9)

  • Perceived Insufficient Milk Supply Scale

    Measured using the Perceived Insufficient Milk Supply Scale (PIMSS) a validated 6-item scale assessing mothers' perception of breast milk adequacy. The first item is answered yes/no, and the remaining items are scored from 0 to 10. Total scores range from 0 to 50, with lower scores indicating perceived milk insufficiency and higher scores indicating perceived adequacy. The aim is to detect significant differences in PIMSS scores between the intervention and control groups across the three time points (T1, T2, T3).

    Baseline (Postpartum Week 2), Second Measurement (Postpartum Week 5), and Final Measurement (Postpartum Week 9)

Secondary Outcomes (1)

  • State-Trait Anxiety Inventory (STAI) Scores

    Postpartum Week 2 (T1), Week 5 (T2), Week 9 (T3)Baseline (Postpartum Week 2), Second Measurement (Postpartum Week 5), and Final Measurement (Postpartum Week 9)

Study Arms (3)

Experimental I (Breastfeeding education + yoga)

EXPERIMENTAL

Mothers who meet the inclusion criteria and provide written informed consent will first complete the "Descriptive Information Form" and the "Edinburgh Postpartum Depression Scale (EPDS)." Mothers scoring below 13 on EPDS will be included in the study. Following randomization, mothers allocated to the Intervention I group will receive both breastfeeding education and breath-based yoga sessions. Participants will be organized into small groups of five, and a WhatsApp group will be created for each subgroup to facilitate communication and scheduling. Breastfeeding education will be delivered online via Google Meet twice weekly for 30-60 minutes over a three-week period by the researcher. After the completion of breastfeeding education, mothers will begin the breath-based yoga program. The yoga intervention will last four weeks and will be performed twice weekly for 45-60 minutes. Yoga sessions will include guided breathing exercises and gentle postpartum-appropriate movements. All necess

Behavioral: Online Breastfeeding EducationBehavioral: Breath-Based Postpartum Yoga Program

Experimental II (Breastfeeding education)

EXPERIMENTAL

Mothers allocated to the Intervention II group will receive breastfeeding education only. Participants will be organized into small groups of five, and a WhatsApp group will be created for each subgroup. Breastfeeding education will be delivered online via Google Meet twice weekly for 30-60 minutes over a three-week period by the researcher. The educational content is identical to the content provided to the Intervention I group. No yoga intervention will be provided. Outcome measurements will be completed at postpartum week 2 (T1, before intervention), postpartum week 5 (T2, after completion of the education), and postpartum week 9 (T3, follow-up).

Behavioral: Online Breastfeeding Education

Control Group: Routine Care

NO INTERVENTION

Mothers allocated to the Control Group will not receive any intervention (neither breastfeeding education nor yoga) within the scope of this study. Participants will continue to receive the routine standard care services provided by their Family Health Centers. Data collection will be carried out at the same time points as the intervention groups (postpartum week 2 \[T1\], week 5 \[T2\], and week 9 \[T3\]) during their routine check-ups at the Family Health Centers.

Interventions

A 3-week online breastfeeding education program delivered via Google Meet, twice weekly for 30-60 minutes, in small groups of five.

Experimental I (Breastfeeding education + yoga)Experimental II (Breastfeeding education)

A 4-week breath-based postpartum yoga program delivered online twice weekly for 45-60 minutes, including guided breathing exercises and gentle postpartum-appropriate movements.

Experimental I (Breastfeeding education + yoga)

Eligibility Criteria

Age19 Years+
Sexfemale(Gender-based eligibility)
Gender Eligibility DetailsOnly individuals who self-identify as female are eligible to participate, as the study focuses on postpartum biological females.
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Primiparous mothers aged 19 years or older who delivered at term (37-42 weeks),
  • Mothers who gave birth in a Baby-Friendly Hospital in Sakarya,
  • Mothers who are open to communication and cooperation, voluntarily agree to participate in the study, and had a normal vaginal delivery,
  • Mothers who agree to participate in the study during postpartum weeks 0-2 and who will be in postpartum weeks 2-10 during the intervention period,
  • Mothers who breastfeed or practice mixed feeding,
  • Mothers and infants who are in good health,
  • Mothers with a Body Mass Index within the normal range,
  • Mothers without sensory impairments such as hearing or vision problems,
  • Mothers without a diagnosed psychiatric history,
  • Mothers who can read and write in Turkish,
  • Mothers who score below 13 on the Edinburgh Postpartum Depression Scale (EPDS) at the first assessment.

You may not qualify if:

  • Infant loss,
  • Mothers with visual, auditory, or cognitive impairments,
  • Infants with physical disabilities or congenital anomalies,
  • Mothers with any neurological, orthopedic, or chronic condition that may prevent participation in exercise,
  • Mothers scoring 13 or above on the Edinburgh Postnatal Depression Scale (EPDS) at the first assessment,
  • Mothers who practiced yoga or breathing exercises during pregnancy or postpartum will be excluded,
  • However, mothers who received a structured breastfeeding education program during pregnancy or postpartum will be excluded from the study.
  • Withdrawal Criteria for Intervention and Control Groups
  • Participants who request to withdraw from the study at any time,
  • Participants who miss more than two yoga-breathing sessions, more than two breastfeeding education sessions, or who cannot be reached will be removed from the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (19)

  • Sharma H, Swetanshu, Singh P. Role of Yoga in Cardiovascular Diseases. Curr Probl Cardiol. 2024 Jan;49(1 Pt A):102032. doi: 10.1016/j.cpcardiol.2023.102032. Epub 2023 Aug 13.

    PMID: 37582455BACKGROUND
  • Wood NK, Odom-Maryon T, Smart DA. Factors Associated with Perceived Insufficient Milk in the First Three Months of Breastfeeding. MCN Am J Matern Child Nurs. 2021 Jul-Aug 01;46(4):223-229. doi: 10.1097/NMC.0000000000000723.

    PMID: 34166240BACKGROUND
  • Menekse D, Tiryaki O, Karakaya Suzan O, Cinar N. An investigation of the relationship between mother's personality traits, breastfeeding self-efficacy, and perception of insufficient milk supply. Health Care Women Int. 2021;42(4-6):925-941. doi: 10.1080/07399332.2021.1892114. Epub 2021 Apr 2.

    PMID: 33797343BACKGROUND
  • Mohebati LM, Hilpert P, Bath S, Rayman MP, Raats MM, Martinez H, Caulfield LE. Perceived insufficient milk among primiparous, fully breastfeeding women: Is infant crying important? Matern Child Nutr. 2021 Jul;17(3):e13133. doi: 10.1111/mcn.13133. Epub 2021 Jan 5.

    PMID: 33399268BACKGROUND
  • Mahurin-Smith J. Challenges with Breastfeeding: Pain, Nipple Trauma, and Perceived Insufficient Milk Supply. MCN Am J Matern Child Nurs. 2023 May-Jun 01;48(3):161-167. doi: 10.1097/NMC.0000000000000909.

    PMID: 37101329BACKGROUND
  • Huang Y, Liu Y, Yu XY, Zeng TY. The rates and factors of perceived insufficient milk supply: A systematic review. Matern Child Nutr. 2022 Jan;18(1):e13255. doi: 10.1111/mcn.13255. Epub 2021 Aug 12.

    PMID: 34382733BACKGROUND
  • Galipeau R, Dumas L, Lepage M. Perception of Not Having Enough Milk and Actual Milk Production of First-Time Breastfeeding Mothers: Is There a Difference? Breastfeed Med. 2017 May;12:210-217. doi: 10.1089/bfm.2016.0183. Epub 2017 Mar 22.

    PMID: 28326807BACKGROUND
  • Mercan Y, Tari Selcuk K. Association between postpartum depression level, social support level and breastfeeding attitude and breastfeeding self-efficacy in early postpartum women. PLoS One. 2021 Apr 2;16(4):e0249538. doi: 10.1371/journal.pone.0249538. eCollection 2021.

    PMID: 33798229BACKGROUND
  • Hines M, Hardy N, Martens A, Zimmerman E. Birth Order Effects on Breastfeeding Self-Efficacy, Parent Report of Problematic Feeding and Infant Feeding Abilities. J Neonatal Nurs. 2022 Feb;28(1):16-20. doi: 10.1016/j.jnn.2021.07.003. Epub 2021 Dec 21.

    PMID: 35095321BACKGROUND
  • Gianni ML, Bettinelli ME, Manfra P, Sorrentino G, Bezze E, Plevani L, Cavallaro G, Raffaeli G, Crippa BL, Colombo L, Morniroli D, Liotto N, Roggero P, Villamor E, Marchisio P, Mosca F. Breastfeeding Difficulties and Risk for Early Breastfeeding Cessation. Nutrients. 2019 Sep 20;11(10):2266. doi: 10.3390/nu11102266.

    PMID: 31547061BACKGROUND
  • Feenstra MM, Jorgine Kirkeby M, Thygesen M, Danbjorg DB, Kronborg H. Early breastfeeding problems: A mixed method study of mothers' experiences. Sex Reprod Healthc. 2018 Jun;16:167-174. doi: 10.1016/j.srhc.2018.04.003. Epub 2018 Apr 6.

    PMID: 29804762BACKGROUND
  • Krol KM, Grossmann T. Psychological effects of breastfeeding on children and mothers. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2018 Aug;61(8):977-985. doi: 10.1007/s00103-018-2769-0.

    PMID: 29934681BACKGROUND
  • van der Kooij K, Te Pas SF. Perception of 3D Slant Out of the Box. Front Psychol. 2011 Jun 6;2:119. doi: 10.3389/fpsyg.2011.00119. eCollection 2011.

    PMID: 21713121BACKGROUND
  • Espinosa E, Zamora P, Milla A, Morales S, Molina R, Mira M, Gonzalez Baron M; Oncopaz Cooperative Group. A phase II trial of cisplatin and vinorelbine in patients with recurrent or metastatic squamous cell carcinoma of the head and neck. Head Neck. 2002 Dec;24(12):1054-9. doi: 10.1002/hed.10172.

    PMID: 12454943BACKGROUND
  • Grolleau A, Bowman J, Pradet-Balade B, Puravs E, Hanash S, Garcia-Sanz JA, Beretta L. Global and specific translational control by rapamycin in T cells uncovered by microarrays and proteomics. J Biol Chem. 2002 Jun 21;277(25):22175-84. doi: 10.1074/jbc.M202014200. Epub 2002 Apr 9.

    PMID: 11943782BACKGROUND
  • Kantor J, Margolis DJ. Management of leg ulcers. Semin Cutan Med Surg. 2003 Sep;22(3):212-21. doi: 10.1016/S1085-5629(03)00043-9.

    PMID: 14649588BACKGROUND
  • Field T. Postnatal anxiety prevalence, predictors and effects on development: A narrative review. Infant Behav Dev. 2018 May;51:24-32. doi: 10.1016/j.infbeh.2018.02.005. Epub 2018 Mar 12.

    PMID: 29544195BACKGROUND
  • Dib S, Wells JCK, Fewtrell M. Mother And late Preterm Lactation Study (MAPLeS): a randomised controlled trial testing the use of a breastfeeding meditation by mothers of late preterm infants on maternal psychological state, breast milk composition and volume, and infant behaviour and growth. Trials. 2020 Apr 7;21(1):318. doi: 10.1186/s13063-020-4225-3.

    PMID: 32264947BACKGROUND
  • Fan YW, Fan HSL, Shing JSY, Ip HL, Fong DYT, Lok KYW. Impact of baby-friendly hospital initiatives on breastfeeding outcomes: Systematic review and meta-analysis. Women Birth. 2025 Mar;38(2):101881. doi: 10.1016/j.wombi.2025.101881. Epub 2025 Feb 6.

    PMID: 39919651BACKGROUND

MeSH Terms

Conditions

Breast Feeding

Condition Hierarchy (Ancestors)

Feeding BehaviorBehavior

Study Officials

  • Dilek Menekse, Associate Professor

    Sakarya University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Dilek Menekse, Associate Professor

CONTACT

Seda Tecik, PhD Candidate

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
This study will use a single-blind design. While participants and intervention providers will not be blinded due to the nature of the education and yoga sessions, the outcomes assessor (statistician) will be blinded to group allocation during data analysis to reduce assessment bias.
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Model Details: Randomized Controlled Trial
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

February 20, 2026

First Posted

February 27, 2026

Study Start

June 1, 2026

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

June 1, 2027

Last Updated

April 28, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Individual participant data will not be shared due to privacy and confidentiality considerations.