Investigating the Feasibility and Preliminary Effects of Yoga on Excessive Gestational Weight Gain

The Power of Yoga: Investigating the Feasibility and Preliminary Effects of Yoga on Excessive Gestational Weight Gain

This study will test the feasibility (i.e., acceptability, demand) of a 12-week prenatal yoga intervention on excessive gestational weight gain (GWG) in pregnant women in the second trimester (enrolled at 12-24 weeks). Participants will be randomized into the prenatal yoga intervention or a pregnancy education (e.g., information on preparing for motherhood, labor and delivery etc.) control group. Participants in both groups will be asked to attend one 75 minute class per week.

The investigators hypothesize that prenatal yoga intervention will be feasible for pregnant women.

The study aims are as follows:

Primary Aim: Determine the feasibility (i.e., acceptability, demand) of a 12-week prenatal yoga intervention in pregnant women. In a randomized controlled pilot study comparing prenatal yoga to a pregnancy education control condition, the investigators will assess 1) acceptability (defined as satisfaction, intent to continue use, perceived appropriateness) and 2) demand (defined as attendance/adherence).

Exploratory Aim 1: Ascertain the preliminary effects of prenatal yoga on excessive GWG [i.e., weight gain exceeding Institute of Medicine (IOM) recommendations]. The investigators will compare weight change between intervention and control groups.

Exploratory Aim 2: Explore the potential mediators (i.e., mindfulness, self-regulation) on the effect of prenatal yoga on excessive GWG.

Study Overview

• Status: Completed
• Conditions: Weight Gain
• Intervention / Treatment: Behavioral: Prenatal yoga; Behavioral: Pregnancy education

• Study Type: Interventional
• Enrollment (Actual): 49
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Arizona
    • Phoenix, Arizona, United States, 85004
      • Arizona Biomedical Collaborative (ASU)
    • Phoenix, Arizona, United States, 85006
      • Urban Wellness

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 46 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Female

Description

Inclusion Criteria:

• Women 18-46 years of age (childbearing age)
• Primiparous (women giving birth for the first time)
• 12-24 weeks gestation at onset of intervention
• Reside in the Phoenix Metropolitan area
• Singleton pregnancy
• English speaking
• Not planning on moving before giving birth
• Can attend at least one session per week

Exclusion Criteria:

• Current alcohol or substance abuse
• Engage in ≥150 min of physical activity
• Participation in ≥30 minutes/week of yoga or contemplative practice (i.e., meditation, qigong) for the previous six months
• Pre-pregnancy BMI ≥40 or <18.5
• Denial of physical activity participation from a physician (PARmed-X for pregnancy)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Prenatal yoga; Each class will be outlined as follows: 1) opening greeting/intention setting, 2) pranayama (i.e., breathing exercises), 3) warm-up/sun salutations (i.e., flowing sequence), 4) yoga sequence (e.g., combination of sun salutations, vinyasa, and standing, seated, and/or balancing poses), 5) cool-down 6) Savasana (i.e., final resting pose), and 7) class closing. Meditation and breath awareness (e.g., linking each movement with breath) will be emphasized throughout each class. All classes will focus on safety and alignment and be appropriate for women during pregnancy by incorporating modifications to poses/exercises as necessary (e.g., yoga block, strap). Certified yoga instructors with a bachelors degree in a health related field and experience teaching pregnant women will instruct all yoga classes. Participants will be provided with a 'yoga during pregnancy' safety packet that includes a list of prenatal yoga poses that women may do at their own leisure at home.	Behavioral: Prenatal yoga; The prenatal yoga classes will be offered at Urban Wellness (2024 N. 7th St., Phoenix, AZ 85006). Classes will be offered Tuesdays's from 4:15-5:30 pm and Saturday's from 9:00-10:15 am. Participants will be able to attend both classes if they so choose but are only asked to attend 1/week. Participants will be asked to arrive to class at least 10 minutes early in order for the research team to collect their weight in a private room. Additionally, if participants have attended at least 70% of classes (1 per week for 8/12 weeks), participants will be able to attend sessions up until birth (beyond the 12-week intervention) if they so choose. If participants decide to attend classes beyond the 12-week intervention the investigators will continue to collect their weight at each session.
Active Comparator: Pregnancy education; Participants will be asked to attend a group-based pregnancy education group (similar to a birth education class). The class format will include a didactic portion followed by group discussion (N=12). The following evidence-based topics (based on the American College of Obstetrics and Gynecologists) to be discussed may include (but not limited to): financial management in preparation for baby, preparing for labor and delivery, transitioning into motherhood, sleep hygiene, and baby bonding. A labor and delivery nurse and certified Dula will instruct all classes.	Behavioral: Pregnancy education; Pregnancy education classes will be offered at the Arizona Biomedical Collaborative Building on ASU Phoenix Campus. Classes will be offered on Tuesday's from 5:30-6:45 pm and Saturday's from 9:00-10:15 am. Participants will be able to attend both classes if they so choose but are only asked to attend 1/week. Participants will be asked to arrive to class at least 10 minutes early in order for the research team to collect their weight in a private room. Additionally, if participants have attended at least 70% of classes (1 per week for 8/12 weeks), participants will be able to attend sessions up until birth (beyond the 12-week intervention) if they so choose. If participants decide to attend classes beyond the 12-week intervention the investigators will continue to collect their weight at each session.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Acceptability via satisfaction survey at post-intervention	Acceptability (defined as satisfaction, intent to continue use, perceived appropriateness); Benchmarks for acceptability include ≥70% of the sample will report the yoga intervention to be a satisfactory, useful, and appropriate modality to prevent excessive GWG.	post-intervention (12-weeks)
Demand (attendance/adherence) of yoga intervention	Demand was measured using attendance/adherence to the yoga intervention. Attendance was tracked by a researcher who was present at each yoga session. Benchmarks for demand include ≥60% of participants in each group will attend one class per week.	Weekly (during 12-week intervention)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of participants with excessive GWG (total GWG from baseline to delivery)	Weight gain exceeding IOM recommendations	Weekly (during 12-week intervention) and at delivery (up to 42 weeks gestation)
Mindfulness (mean change from baseline)	Self-report mindfulness scores via Mindful Attention Awareness Scale (MAAS); 15-item questionnaire with score ranges 1-6. Higher scores reflect higher levels of dispositional mindfulness.	Baseline, post-intervention (12-weeks)
Self-awareness (mean change from baseline)	Self-report self-awareness scores via Self-Awareness Outcomes Questionnaire (SAOQ); Consists of 38 items measuring 4 subscales (reflective self-development, acceptance, proactive at work, and emotional costs). Score ranges for each subscale are between 1-5. Higher scores represent a greater frequency of experienced outcomes.	Baseline, post-intervention (12-weeks)
Emotion Regulation (mean change from baseline)	Self-report emotion regulation scores via Emotional Regulation Questionnaire (ERQ); Consists of 10 items measuring 2 subscales (reappraisal items, suppression items). Score ranges for each subscale are between 1-7. The higher the scores, the greater the use of the emotional regulation strategy.	Baseline, post-intervention (12-weeks)
Sleep Quality (mean change from baseline)	Self-report sleep quality via Pittsburgh Sleep Quality Index (PSQI); Consists of 10-items. In scoring the PSQI, seven component scores are derived ranging from 0 (no difficulty) to 3 (severe difficulty). The component scores are summed to produce a global score (range 0 to 21). Higher scores indicate worse sleep quality.	Baseline, post-intervention (12-weeks)

Collaborators and Investigators

• Sponsor: Arizona State University
• Collaborators: Kripalu Center for Yoga and Health

Study record dates

Study Major Dates

• Study Start (Actual): June 12, 2018
• Primary Completion (Actual): December 1, 2019
• Study Completion (Actual): December 1, 2019

Study Registration Dates

• First Submitted: March 19, 2019
• First Submitted That Met QC Criteria: March 26, 2019
• First Posted (Actual): March 28, 2019

Study Record Updates

• Last Update Posted (Actual): January 7, 2021
• Last Update Submitted That Met QC Criteria: January 5, 2021
• Last Verified: January 1, 2021

More Information

Terms related to this study

• Keywords: pregnancy; prenatal yoga; excessive gestational weight gain
• Additional Relevant MeSH Terms: Body Weight Changes; Body Weight; Weight Gain; Gestational Weight Gain
• Other Study ID Numbers: STUDY00007808; FP00012624 (Other Grant/Funding Number: Kripalu Center for Yoga and Health)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No
• IPD Plan Description: Consent forms indicate that data will not be shared with anyone other than those listed on the study team.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No