The authors examined the potential association between changes in the number of moderate-to-vigorous physical activity (MVPA) sessions per week, adiposity, and systolic blood pressure (SBP) during adolescence. SBP and anthropometric factors were assessed biannually (1999/2000, 2002, and 2004) in a cohort of 1,293 Canadian adolescents aged 12-13 years in 1999. Self-reported 7-day recall data on ...

potential confounders. We analyzed the relationship between leisure time physical activity and common cold incidence in 3,470 males who were followed up for 2 years. In contrast, the metaanalysis by Lee et al. included only 281 participants. Therefore, our study had much narrower CIs. For example, compared with the sedentary participants (n = 1,198), those who carried out moderate-level physica...

Current U.K. guidelines on the management of borderline personality disorder include specific recommendations about the duration of therapy and number of sessions per week that patients should be offered. However, very little research has been conducted to examine the impact of these aspects of treatment process on patient outcomes. We therefore undertook a systematic review to examine the impa...

the present study aimed to determine the effects of 12 weeks of aerobic exercise in different times of day on some cardiovascular risk factors in overweight men. 40 non-athletes, overweight men with an average age of 22.25±2.45 years old and bmi of 30.06±2.42 kg/m2 were randomly allocated to four groups of morning and evening aerobic training and control. morning and evening training groups per...

this study examined the effect of general and specific practice on the presence of a special skill. 24 healthy university students with no history of basketball were selected. after a pretest, they performed constant and variable practice (in constant and variable groups) for 5 weeks and 3 sessions per week. a performance test was conducted at the end of every week and retention and transfer te...

To the Editor: Dr Bhasin and colleagues reported that testosterone replacement therapy or resistance training resulted in gains in body weight, muscle mass, strength, and lean body mass in men infected with the human immunodeficiency virus (HIV) who have weight loss and low testosterone levels. However, the training protocol does not reflect the scientific basis for effective resistance trainin...

Sir, Weiss et al. [1] have reported that once weekly erythropoietin b is as effective as more frequent dosing intervals in haemodialysis (HD) patients receiving treatment for the anaemia of end-stage renal failure. In view of their findings we switched all of our stable HD patients to once a week erythropoietin (EPO) providing that they were receiving less than 10 000 U subcutaneouslyuweek. A t...