Effectiveness of Radon Spa Therapy in Multimodal Rehabilitative Treatment of Rheumatoid Arthritis

Forschungsinstitut für Balneologie und Kurortwissenschaft Bad Elster

Status and phase

Completed

Phase 4

Conditions

Rheumatoid Arthritis

Treatments

Procedure: 15 radon(+CO2) baths vs 15 CO2 baths; beside rehabilitation

Study type

Interventional

Funder types

Other

Identifiers

NCT00334620

BB-3I_1998

Details and patient eligibility

About

The study aimed to investigate effects of radon (plus CO2) baths on RA in contrast to artificial CO2 baths in RA rehabilitation.

134 patients of an in-patient rehabilitative programme were randomly assigned to the groups. Outcomes were limitations in occupational context/ daily living (main outcome), pain, medication, etc. measured before start, after end of treatment, and up to a year thereafter.

Superiority of radon treatment was found regarding reduced limitations in daily living until 12 months after end of treatment. Steroid consumption and NSAIDs were significantly reduced.

Full description

Objective: To replicate former observed beneficial effects of Radon (plus CO2) baths on RA in contrast to artificial CO2 baths and to investigate its long-term effectiveness and impact on drug consumption.

Methods: Randomised double-blinded trial with 2 randomised balanced groups enrolling 134 patients of an in-patient rehabilitative programme (a 3rd non-randomised group of 73 consecutive patients is not reported here). Outcomes were limitations in occupational context/ daily living, pain, functional capacity, morning stiffness and medication measured before start, after end of treatment, and quarterly in the year thereafter. Repeated-measures analysis of covariance (RM-ANCOVA) of intent-to treat population was performed to investigate treatment effects. Hierarchically ordered hypotheses ensured adherence of the nominal significance level and allowed examining of long-term effects. Starting with all measures until 6 months' follow-up, significant main effects for group allocation (GME) or significant group x course-interactions (GxC) were regarded essential to add the next follow-up for analysis.

Results: Radon treatment resulted in significantly lower limitations of daily living over at least 9 months whereas reference patients returned to baseline level after 6 months already (RM-ANCOVA until 6 months: pGME=.15, pGxC=.016/ 9 months: pGME=.11, pGxC=.025/ 12 months: pGME=.17, pGxC=.033). Furthermore, consumption of steroids and NSAID was remarkably reduced in the Radon group (RM-ANCOVA until 12 months: for steroids pGME=.064, interaction pGxC=.025, maximum difference after 12 months; for NSAID pGME=.035, interaction pGxC=.008, maximum difference after 9 months).

Conclusion: Results suggest beneficial long-term effects of Radon baths as adjunct to a multimodal rehabilitative treatment of RA.

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Rheumatoid arthritis according to the 1987 revised ACR criteria for RA

Exclusion criteria

current exacerbations of the inflammatory process
other systemic inflammatory diseases
concomitant musculo-skeletal diseases possibly interfering with outcome measurement,
pregnancy or breast feeding
disorders of the central nervous system
a known tendency toward thrombosis
malignant hypertension
coronary heart disease
heart failure, arrhythmia
severe disorders of lungs, kidneys, or liver
advanced malignancies
abuse of alcohol or drugs,
major skin lesions,
severe fever, or infections.