Does pentoxifylline prolong the walking distance in exercised claudicants? A placebo-controlled double-blind trial. 1992

E Ernst, and L Kollár, and K L Resch
Department of Physical Medicine and Rehabilitation, University of Vienna, Austria.

The aim of this study was to test whether in claudicants oral pentoxifylline, given for twelve weeks in addition to physical exercise, prolongs the walking distance more than placebo plus exercise. Forty outpatients were randomized into group A (2 x 600 mg oral pentoxifylline per day) or group B (placebo). Both groups received the same exercise program in addition. The maximal and painfree walking distances and blood viscosity were measured. Intergroup differences in terms of blood viscosity reached the level of significance only after twelve weeks (p = 0.006 at shear rate of 94.5 s-1), but values of group A continuously decreased and those of group B continuously increased. After one and eight weeks, but not after twelve weeks, the maximal walking distances were significantly longer in group A than in group B. At no point were there significant intergroup differences in terms of painfree walking distance. The data suggest that pentoxifylline is clinically effective in claudicants even when given in addition to exercise. The benefit of drug plus physical therapy compared with exercise alone could be observed mainly in the first weeks of treatment and may wear off during long-term therapy.

UI MeSH Term Description Entries
D007383 Intermittent Claudication A symptom complex characterized by pain and weakness in SKELETAL MUSCLE group associated with exercise, such as leg pain and weakness brought on by walking. Such muscle limpness disappears after a brief rest and is often relates to arterial STENOSIS; muscle ISCHEMIA; and accumulation of LACTATE. Claudication, Intermittent
D010431 Pentoxifylline A METHYLXANTHINE derivative that inhibits phosphodiesterase and affects blood rheology. It improves blood flow by increasing erythrocyte and leukocyte flexibility. It also inhibits platelet aggregation. Pentoxifylline modulates immunologic activity by stimulating cytokine production. Agapurin,BL-191,Oxpentifylline,Pentoxil,Torental,Trental,BL 191,BL191
D010919 Placebos Any dummy medication or treatment. Although placebos originally were medicinal preparations having no specific pharmacological activity against a targeted condition, the concept has been extended to include treatments or procedures, especially those administered to control groups in clinical trials in order to provide baseline measurements for the experimental protocol. Sham Treatment
D003131 Combined Modality Therapy The treatment of a disease or condition by several different means simultaneously or sequentially. Chemoimmunotherapy, RADIOIMMUNOTHERAPY, chemoradiotherapy, cryochemotherapy, and SALVAGE THERAPY are seen most frequently, but their combinations with each other and surgery are also used. Multimodal Treatment,Therapy, Combined Modality,Combined Modality Therapies,Modality Therapies, Combined,Modality Therapy, Combined,Multimodal Treatments,Therapies, Combined Modality,Treatment, Multimodal,Treatments, Multimodal
D004311 Double-Blind Method A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment. Double-Masked Study,Double-Blind Study,Double-Masked Method,Double Blind Method,Double Blind Study,Double Masked Method,Double Masked Study,Double-Blind Methods,Double-Blind Studies,Double-Masked Methods,Double-Masked Studies,Method, Double-Blind,Method, Double-Masked,Methods, Double-Blind,Methods, Double-Masked,Studies, Double-Blind,Studies, Double-Masked,Study, Double-Blind,Study, Double-Masked
D005081 Exercise Therapy A regimen or plan of physical activities designed and prescribed for specific therapeutic goals. Its purpose is to restore normal musculoskeletal function or to reduce pain caused by diseases or injuries. Rehabilitation Exercise,Remedial Exercise,Therapy, Exercise,Exercise Therapies,Exercise, Rehabilitation,Exercise, Remedial,Exercises, Rehabilitation,Exercises, Remedial,Rehabilitation Exercises,Remedial Exercises,Therapies, Exercise
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D013607 Tablets Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. (Dorland, 28th ed) Tablet
D016138 Walking An activity in which the body advances at a slow to moderate pace by moving the feet in a coordinated fashion. This includes recreational walking, walking for fitness, and competitive race-walking. Ambulation

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