NCT02607514

Brief Summary

Study is a randomized controlled trial to assess the feasibility, acceptability, efficacy, and mechanisms of action of hyperthermic yoga versus a waitlist control for 80 medically healthy adults with mild to moderate depressive symptoms. The primary aim is to test the acceptability and feasibility of hyperthermic yoga as a treatment for depression. The secondary aim is to examine the effect size/efficacy of hyperthermic yoga for depressive symptoms. The tertiary aim is to explore physiological and psychological mechanisms of action.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
80

participants targeted

Target at P25-P50 for not_applicable depression

Timeline
Completed

Started Feb 2017

Typical duration for not_applicable depression

Geographic Reach
1 country

1 active site

Status
completed

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

November 12, 2015

Completed
6 days until next milestone

First Posted

Study publicly available on registry

November 18, 2015

Completed
1.3 years until next milestone

Study Start

First participant enrolled

February 20, 2017

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 19, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 19, 2019

Completed
4.7 years until next milestone

Results Posted

Study results publicly available

August 27, 2024

Completed
Last Updated

November 20, 2025

Status Verified

November 1, 2025

Enrollment Period

2.8 years

First QC Date

November 12, 2015

Results QC Date

April 19, 2023

Last Update Submit

November 11, 2025

Conditions

Outcome Measures

Primary Outcomes (3)

  • Depressive Symptoms as Measured by the Inventory of Depressive Symptomatology - Clinician Rated (IDS-CR)

    Inventory of Depressive Symptomatology - Clinician Rated. Scale range: 0-84 (higher = greater depressive symptoms)

    8-week primary endpoint

  • Feasibility and Tolerability Measured by Percent of the Yoga Group Who Complete a Week 8 Assessment

    Measured by percent of the yoga group who complete a week 8 assessment

    8-week primary end point

  • Acceptability as Measured by the Acceptability Interview Completed at 8-week Endpoint or Early Termination

    Acceptability Interview: A 19-question qualitative interview assesses perception of ease of participation, program likeability, and perceived benefits of the yoga program. Adapted from DeBoer et al. It was a 1-10 likert scale with 1 = lowest, 10 = highest to rate acceptability of the yoga intervention. These are the items we used: 1) how much did you enjoy the yoga itself?; 2) how much did you enjoy the aftereffects of the yoga?; and 3) how reasonable did you find the time commitment to be?

    at the end of 8-weeks or early termination.

Secondary Outcomes (8)

  • Quality of Life as Measured by the Quality of Life Satisfaction Questionnaire-Short Form (Q-LES-Q-SF) Over 8 Weeks.

    8-weeks end point

  • General Health as Measured by the Medical Outcomes Study 36-item Short-form Survey (SF-36)

    8 weeks

  • Physical Functioning as Measured by the Physical Component Scale (PCS) of the Medical Outcomes Study 36-item Short-form Survey (SF-36) Over 8 Weeks.

    8 weeks

  • Perceived Stress as Measured by the Perceived Stress Scale (PSS) Over 8 Weeks.

    8 weeks

  • Anxiety as Measured by the Spielberger State-Trait Anxiety Inventory (STAI), State, Over 8 Weeks.

    8 weeks

  • +3 more secondary outcomes

Study Arms (2)

immediate yoga arm

EXPERIMENTAL

participants will immediately start the 8-week hyperthermic yoga intervention

Behavioral: hyperthermic yoga

delayed yoga arm

OTHER

participants will wait 8-weeks to start the 8-week hyperthermic yoga intervention

Behavioral: hyperthermic yoga

Interventions

heated yoga, 90-minutes

Also known as: Bikram Yoga
delayed yoga armimmediate yoga arm

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Adults ages 18-60
  • English language proficiency
  • Ability to provide informed consent
  • Score of \>23 on the Inventory of Depressive Symptomatology - Clinician Rated (IDS-CR)
  • Able and willing to attend two 90-minute hyperthermic yoga sessions per week
  • Willingness to keep existing exercise regimen (even if that is sedentary) stable over study course
  • Women of childbearing potential must use an acceptable form of birth control
  • Membership to the Bikram Yoga Boston and Bikram Yoga Cambridge studios via studio website "Interested in research" option through a centralized portal (this will remain central until January 1, 2017)
  • Willingness to adhere to hydration requirements (i.e., an additional four 8 oz servings of water pre- and post-yoga classes)

You may not qualify if:

  • Pregnancy or planned pregnancy during study
  • History of psychiatric hospitalization within the past year
  • Active suicidal intent within the past year ("yes" on item 4 or 5 on the Columbia-Suicide Severity Rating Scale)
  • History of neurologic disorders that could interfere in study participation
  • History of bipolar disorder, psychotic disorders, eating disorders, and/or substance abuse or dependence (within the last year), as per the Mini-International Neuropsychiatric Interview (MINI)
  • Psychotropic medication use that has been stable for \<3 months
  • Use of stimulant medications or diet pills during the study, or any pre-workout powders or liquids designed to provide excessive energy
  • Active conditions which may also cause depressive symptoms (e.g. epilepsy, hypothyroidism)
  • Medical conditions that may make participation unsafe (e.g., diabetes \[I \& II\], cardiovascular disease, hypertension \[\>140 systolic and/or \>90 diastolic\], hypotension \[\<90 systolic and/or \<60 diastolic, during screening\], orthostatic hypotension \[systolic drop of 20 points or 10 point diastolic or heart rate increase by 10\], autoimmune disorders, malignancy, or autonomic dysfunction)
  • \> 6 one hour classes of meditation or other mind-body disciplines (e.g., Tai chi or yoga) within the last 6 months
  • Current individual or group psychotherapy established for \<3 months
  • A subject who in the opinion of the Principal Investigator would not be able to safely complete the study or would jeopardize study integrity
  • History of heat intolerance or heat stroke
  • Unsafe cardiac status as defined by abnormal ECG reading at screening visit as determined by medical monitor, study doctor, or subject's PCP or cardiologist

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Depression Clinical and Research Program

Boston, Massachusetts, 02114, United States

Location

Related Publications (1)

  • Nyer MB, Hopkins LB, Nagaswami M, Norton R, Streeter CC, Hoeppner BB, Sorensen CEC, Uebelacker L, Koontz J, Foster S, Dording C, Giollabhui NM, Yeung A, Fisher LB, Cusin C, Jain FA, Pedrelli P, Ding GA, Mason AE, Cassano P, Mehta DH, Sauder C, Raison CL, Miller KK, Fava M, Mischoulon D. A Randomized Controlled Trial of Community-Delivered Heated Hatha Yoga for Moderate-to-Severe Depression. J Clin Psychiatry. 2023 Oct 23;84(6):22m14621. doi: 10.4088/JCP.22m14621.

MeSH Terms

Conditions

DepressionDepressive Disorder, Major

Condition Hierarchy (Ancestors)

Behavioral SymptomsBehaviorDepressive DisorderMood DisordersMental Disorders

Results Point of Contact

Title
Maren Nyer
Organization
Massachusetts General Hospital

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Maren Nyer, PhD

Study Record Dates

First Submitted

November 12, 2015

First Posted

November 18, 2015

Study Start

February 20, 2017

Primary Completion

December 19, 2019

Study Completion

December 19, 2019

Last Updated

November 20, 2025

Results First Posted

August 27, 2024

Record last verified: 2025-11

Locations