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Objective. To compare the effects of a 3-month land- and waterbased exercise programme among rheumatoid arthritis (RA) sufferers. Methods. Patients with RA Functional Class I and II ( N =10) were randomly assigned to a land-based exercise group (Group L) ( N =4), water-based exercise group (Group W) ( N =4) or a control group (Group C) ( N =2). Testing parameters included swollen joint count (SJC), tender joint count (TJC), erythrocyte sedimentation rate (ESR), haemoglobin (Hb), 50-ft (15.2-m) walk test, grip strength, isokinetic strength of knee extensors and flexors, knee range of motion (ROM) and aerobic capacity. Results. There were individual improvements in most of the physical status parameters tested for the experimental groups (land-based exercise group and water-based exercise group) while the general trend for the control group was that of deterioration. Appropriate land-based exercises did not appear to aggravate disease activity. However, the water-based exercise programme was superior in controlling the disease activity with regards to the tender and swollen joint counts. Conclusion. Both exercise interventions appeared to be beneficial in the treatment of RA. Further research is required comparing various modes of exercises for the treatment of RA, using larger samples and evaluating the long-term effects.

Objective. To determine the attitudes, beliefs and knowledge of talented young athletes residing in Gauteng regarding prohibited performance-enhancing drugs (PEDs) and anti-doping rules and regulations.Methods. This was a survey study using a quantitative research approach. South African TuksSport academy athletes at the High Performance Centre, University of Pretoria, and competitive high-school athletes at four private high schools in Gauteng completed the survey. A selfdetermined, structured questionnaire was used to establish the attitudes, beliefs and knowledge of the athletes.Results. A total of 346 (208 males, 138 females) athletes, mean (standard deviation) age 16.9 (1.4) years participated in the survey. According to this survey, 3.9% of the athletes in this survey admitted to using a prohibited PED and more than 14.0% of the athletes said they would consider using a prohibited PED if they knew they would not get caught. Ambition (46.0%) and emotional pressure (22.5%) were the primary reasons why the athletes would consider using prohibited PEDs. Even though coaches appeared to be one of the main sources of information (on PEDs and anti-doping rules), only 42.1% of the athletes felt that they were well informed.Conclusion. Controlling doping by means of testing is important. However, it may be necessary to put more emphasis on changing attitudes towards doping and implementing additional educational programmes.

Objective . To evaluate whether three-dimensional (3D) musculoskeletal modelling could be effective in assessing the safety and efficacy of exercising on a seated row resistance-training machine. The focus of the evaluation was on biomechanical and anthropometric considerations of the end user. Methods. Three anthropometric cases were created; these represented a 5th percentile female as well as a 50th and a 95th percentile male based on body mass index. Two repetitions, with a resistance equal to 50% of the functional strength of one repetition maximum (1RM) for each anthropometric case, were performed. Results. Results indicate that the default model of the LifeModeler software has important limitations that should be taken into consideration when used to evaluate exercise equipment. Adjustments had to be made to the model to solve the forward dynamics simulations; as a result, no muscle forces or contraction values were obtained. This negatively influenced the value of the results as these parameters are important when analysing an exercise. The seated row resistance-training machine’s engineered or manufactured adjustability was sufficient, as it appeared to accommodate the three anthropometric cases adequately during execution of this exercise. Conclusion. It appears that 3D musculoskeletal modelling can be used to evaluate resistance-training exercises such as the seated row; however, the limitations indicated by this study must be taken into consideration, especially when using the default LifeModeler model