Persistent Organic Pollutants and Mechanical Discharge: Limiting the Impact of Bariatric Surgery Through Personalized Adapted Physical Activity

Recruiting now · Not applicable

Conditions studied: Obesity, Bariatric Surgery Candidate

In brief

For the most severe cases of obesity, recourse to bariatric surgery is the ultimate solution. Although highly beneficial to individual health, this massive loss of body mass could also have negative effects on metabolism and neuromuscular function. Unfortunately, these effects have been relatively little studied in the scientific literature, and are poorly taken into account in patient follow-up when bariatric surgery has been recommended. One of the adverse effects of bariatric surgery is the release into the bloodstream of Persistent Organic Pollutants (POPs) which, are not only persistent, but also bioaccumulative, toxic and mobile. The major problem is that these circulating POPs are linked to a number of adverse side effects, including reproductive disorders, neurobehavioral alterations, metabolic disorders, gut microbiota alterations inflammatory changes and physiological alterations. POP neurotoxicity could also affect psychomotor abilities and neuromuscular function. In addition, the mechanical unloading (i.e., reduced mechanical stress on muscles) induced by loss of body mass, an effect targeted by bariatric surgery and largely beneficial to the health of individuals, could also alter neuromuscular function and potentially alter muscle architecture and contractile properties. Unfortunately, no data are currently available in the scientific literature to confirm or refute these hypotheses. Physical activity-based intervention strategies may be usefull to counteract the effects of mechanical unloading and the release of POPs as suggested in scientific literature. However it is also possible to question which exercise modality should be preferred. Our hypothesis is that eccentric muscle strengthening would better preserve muscle mass and neuromuscular function while limiting the risks associated with POPs release, compared with an aerobic and a control group.

Key facts

Study ID: NCT06597617
Run by: Centre Hospitalier Universitaire de Nice
People needed: 60
Starts: 2025-06-01
Expected to finish: 2028-10-01
Last updated by the study team: 2025-03-25

Who can join

Age: 18 and older, up to 55. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Adult patient (18-55 years)
Patient scheduled for bariatric surgery
Patient practicing a leisure-time physical activity < 8 hours of moderate intensity per week or < 4 hours of high intensity per week
Presence of effective contraception (hormonal or mechanical)

You may not qualify if…

Patient already involved in another experimental study
Pregnant (urine pregnancy test) or breast-feeding women
Patient in a particular situation deemed incompatible with the study by the investigator
Patients from outside the Alpes-Maritimes and Var departments
Patient having received antibiotic treatment during the 3 months preceding the first stool collection
Presence of a contraindication to adapted physical activity
Presence of a contraindication to neurostimulation

Where it is running

CHU de Nice — Nice, France (enrolling)

Full record on ClinicalTrials.gov

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