Can Body-Based Therapy Ease Depression? A Major Trial Puts Psychomotor Treatment to the Test

Depression has long been described as a disorder of mood, but clinicians and researchers are increasingly recognizing that it is also a disorder of the body. Patients with major depressive disorder, or MDD, frequently move more slowly, lose fine motor dexterity, struggle with balance and coordination, and experience distorted body image and disrupted sensory processing. Yet despite how well documented these psychomotor disturbances are, they remain rarely assessed and almost never directly treated in routine psychiatric care. A new randomized controlled trial, launched in France and registered with ClinicalTrials.gov under identifier NCT06234176, now aims to change that by rigorously testing whether psychomotor therapy, a structured body-centered intervention, can improve quality of life and psychomotor functioning in adults with depression.

The study, published as a study protocol in BMC Psychiatry, is led by researchers at the Esquirol Hospital Center in Limoges and the La Valette Hospital Center in Saint-Vaury. It is designed as a multicenter, two parallel-group, prospective randomized controlled trial, conducted in accordance with the SPIRIT guidelines for interventional trials. Recruitment began on May 7, 2024, and the study is expected to run until May 7, 2028. In total, 128 participants diagnosed with MDD according to DSM-5 criteria, and with a Hamilton Depression Rating Scale score above 16, will be enrolled from full or partial hospitalization units and outpatient clinics. Participants must be between 20 and 60 years old, and individuals with psychiatric comorbidities such as substance use disorders, bipolar disorder, psychosis, or eating disorders are excluded to ensure that any observed effects can be attributed specifically to depression.

The rationale for the trial rests on a substantial and growing body of evidence that psychomotor symptoms constitute a central dimension of depression rather than a peripheral curiosity. A recent meta-analysis confirmed significant psychomotor slowing in depression, along with reduced speed of simple movements and gait, decreased dexterity, and impaired postural control. Earlier work using a standardized semiological approach demonstrated that patients with depression exhibit disorganized muscle tone, slowness and clumsiness in gross and fine motor skills, difficulties with balance and coordination, and disturbances of body image and self-esteem. Behavioral assessments integrating cognitive and motor dimensions have further revealed reduced dual-task cognitive-motor performance and deficits in cognitive inhibition, while other studies point to executive function impairments in attention, working memory, and processing speed that strongly affect daily functioning.

Sensory processing disturbances add another layer to this picture. Studies have shown that hyper- or hyposensitivity across sensory modalities is frequently associated with depressive disorders and may disrupt emotional regulation and sensory integration. High sensory sensitivity, in particular, is known to negatively affect quality of life, producing fluctuations in well-being, daily functioning, and health. Taken together, these findings suggest that psychomotor alterations in depression are multifactorial, directly reducing autonomy and functional capacity, and that motor and cognitive deficits may serve both as markers of disease progression and as potential targets for therapeutic intervention.

Psychomotor therapy, or PMT, is a paramedical discipline practiced in France and several other countries that targets the assessment and treatment of psychomotor disorders. Grounded in the framework of the International Classification of Functioning, Disability and Health, it integrates movement, body awareness, sensory processing, and emotional regulation with the aim of enhancing physical, psychological, and social functioning in daily life. Based on clinical assessment and standardized testing, the psychomotor therapist develops an individualized intervention plan incorporating educational, preventive, rehabilitative, and psychotherapeutic objectives. Although a 2018 study by Bergland and colleagues demonstrated that psychomotor-based physiotherapy improved quality of life in a non-clinical population, no randomized controlled trial has yet evaluated PMT specifically in adults with MDD, leaving the evidence base strikingly thin for such a widely used intervention.

The new trial is designed to fill that gap. Participants are randomly assigned in a 1:1 ratio to an intervention group or a control group, with randomization stratified by center and balanced using permuted blocks of fixed size four to minimize inter-center bias. Allocation codes are kept in numbered sealed envelopes managed by an independent member of the research staff. The intervention group receives twelve weeks of PMT in addition to standard care, consisting of one 45-minute session per week with the same therapist in a dedicated room. The control group continues standard care and receives a weekly ten-minute telephone follow-up in which quality of life and treatments are monitored using the Duke Health Profile. Because the nature of the intervention makes double-blinding impossible, participants and therapists cannot be blinded, but the principal investigator and the associated research team, including the biostatistician, remain blind to group allocation, and outcome evaluations are conducted by a therapist not involved in the patient’s treatment.

Because no standardized PMT protocol exists for MDD, the intervention is built around personalized goals derived from the initial psychomotor assessment, the patient’s self-expressed goals, and the therapist’s clinical analysis. Each session follows a consistent yet flexible structure: it opens with a welcome phase in which patients express their emotional state, proceeds through guided psychocorporal activities, and closes with a relaxation phase focused on muscle tone, breathing, and emotional awareness. The core activities target fundamental psychomotor functions including tonic and postural regulation, static and dynamic balance, coordination and fine motor skills, body awareness, emotional regulation, spatio-temporal structuring through rhythm and synchronization, executive functions such as attention and motor planning, and sensory integration across tactile, vestibular, auditory, visual, and proprioceptive modalities. Therapists draw on a wide repertoire of mediators, from balance boards and therapy balls to emotion cards, textured sensory materials, weighted blankets, and creative supports such as drawing and modeling clay. The exercise selection follows an evidence-based practice approach, drawing on research showing that relaxation techniques, body-oriented interventions, sensorimotor stimulation, and mindfulness-based approaches can reduce depressive symptoms and modulate mood through bottom-up activation of affective neurocircuitry.

The trial’s primary outcome is the change in quality of life, measured with the validated 36-item Short Form Health Survey, from baseline to three months, comparing the two composite scores for physical and mental health. Secondary outcomes are extensive: quality of life at six months, changes in depressive symptoms on the Hamilton Depression Rating Scale, anxiety on the Hamilton Anxiety Rating Scale, psychomotor slowing on the CORE rating scale, self-esteem on the Rosenberg Self-Esteem Scale, and anhedonia on the Snaith-Hamilton Pleasure Scale. Psychomotor functioning is assessed with the standardized NP-MOT battery covering muscle tone, balance, coordination, praxis, and rhythm, supplemented by the Purdue Pegboard Test for fine manual dexterity and a distal gnosopraxic evaluation involving imitation of non-meaningful gestures. Body image is measured with the Body Image Questionnaire, interoceptive awareness with the MAIA-2 questionnaire, and sensory reactivity with the 60-item Adult/Adolescent Sensory Profile. Therapeutic alliance is tracked after every session using the Session Rating Scale, and adherence is quantified by the number of sessions completed.

The statistical plan is equally rigorous. Analyses follow the intention-to-treat principle, with between-group differences at three and six months analyzed using analysis of covariance adjusted for baseline scores, age, and sex. Changes over time will be modeled with linear mixed-effects models including group, time, and their interaction, while correlations will explore associations between psychomotor, sensory, and clinical variables. Notably, the researchers will use multivariable logistic regression to identify baseline psychomotor and sensory measures that predict clinical improvement, defined as at least a 50 percent reduction in depression severity at six months, potentially establishing these measures as prognostic factors. The sample size was calculated from observed changes in SF-36 Physical Functioning in cardiac rehabilitation patients, requiring 90 participants for 90 percent power, inflated to 128 to account for 30 percent attrition.

The researchers acknowledge limitations, including the impossibility of double-blinding and the exclusion of comorbid patients, which may limit generalizability given that roughly 78.5 percent of individuals with MDD present at least one psychiatric comorbidity within a twelve-month period. Still, if the trial demonstrates that PMT meaningfully improves quality of life and psychomotor functioning, the implications could be substantial: justifying the prescription of psychomotor therapy for depression, supporting the integration of psychomotor therapists into multidisciplinary adult psychiatry teams, and providing a methodological template for future trials of body-based interventions in other psychiatric disorders. For millions of patients whose depression lives not only in their mood but in their muscles, senses, and movements, the trial represents a long-overdue step toward treating the whole body of the illness.

Subject of Research: A randomized controlled trial evaluating psychomotor therapy for quality of life and psychomotor skills in major depressive disorder.

Article Title: Study protocol of a randomized controlled trial for the effectiveness of psychomotor therapy on quality of life and psychomotor skills in depression

Article References: Pouilloux, G., Henault, M., Vinais, T., Bodeau, N., Laplace, B., & Paquet, A. (2026). Study protocol of a randomized controlled trial for the effectiveness of psychomotor therapy on quality of life and psychomotor skills in depression. BMC Psychiatry, 26(1), Article 711. https://doi.org/10.1186/s12888-026-08347-9

Image Credits: AI Generated

DOI: 10.1186/s12888-026-08347-9

Keywords: psychomotor therapy, major depressive disorder, quality of life, randomized controlled trial, psychomotor slowing, sensory processing, body image, interoception, non-pharmacological intervention, psychiatry, rehabilitation, mental health