Effects of randomization versus pre-orientation of subjects for the prediction of maximum oxygen uptake using the twelve minutes run test

Aim: To compare the results from twelve minutes run test (12-MRT) when subjects run singly with those obtained when subjects run in randomized groups and in pre oriented groups. Methods: 33 subjects performed the 12-MRT in four variants: Achieving alone the 12-MRT on a 400 m track (Alone); Achieving in randomised groups of three the 12-MRT on a 400 m track (Group); Achieving in preoriented groups of three the 12-MRT on a 400 m track (PO-Group); Completing alone the 12-MRT on a 200 m tract (Half-Track). At the end of each test, the rate of perceived exertion was determined. Results: No significant difference (p>0.05) was found in predicted VO2max between tests. RPE was significantly higher during PO-Group compared to Alone. Underperforming athletes elicited an underestimation of predicted VO2max in Alone more important to POGroup (12.1%) compared to Group (8%). No change of predicted VO2max was observed in the middle athletes between Alone, Group and PO-Group. For the fastest athletes, predicted VO2max was significantly lower (p<0.05) for PO-Group compared to Alone where as for the Group, predicted VO2max was higher (p<0.05) compared to Alone. Conclusion: These results suggest that prediction of VO2max using the 12-MRT is influenced by peer relationship and the training status of athletes

The Effects of Exercise and Social Support on Mothers Reporting Depressive Symptoms: A Pilot Randomized Controlled Trial

A 12-week randomized controlled trial was conducted (n = 20) investigating the effects of a multi-intervention programme of exercise and social support compared to a control group. Both groups had given birth in the past 12 months and were experiencing depressive symptomatology. Pre-test data of physical fitness and structured questionnaires were compared to post-test data. The results from the study showed that mothers who were in the multi-intervention group improved their fitness levels and depressive symptomatology significantly more than the control group. However, there were no significant changes to either group's social support levels. These results are encouraging and suggest that a pram push walking intervention might be an effective treatment for mothers suffering postnatal distress