Objectives: Significant reductions in state anxiety following bouts of aerobic exercise have been consistently noted, whereas changes are generally absent after acute resistance training. However, the influence of a single exercise session involving both modes on state anxiety has not been examined. Methods: To address this, state anxiety responses to 60 minutes of cross training were examined in 16 collegiate athletes (12 women, four men). Each subject completed two cross training exercise sessions (30 minutes of resistance training, 30 minutes of bicycle ergometry) in which the order of the exercises was reversed, with a minimum of one week between sessions. Each exercise mode was completed at about 70% of maximum. State anxiety (SAI-Y1) was assessed five minutes before, and 0, 10, and 60 minutes after exercise. Results: Repeated measures analysis of variance showed a significant (p<0.05) main effect for time. However, the main effect for order and the order by time interaction were not significant. Post hoc analysis showed that state anxiety was reduced (p<0.05) from baseline (mean (SD) = 34.8 (7.9)) at 10 minutes (32.1 (7.5)) and 60 minutes (30.4 (5.9)) after exercise, but not at 0 minutes (33.8 (6.9)). Conclusions:The results indicate that combined sessions of aerobic and resistance exercise are associated with reductions in state anxiety, and that the order in which the exercise is completed does not influence this response. R esearch indicates that physical exercise is associated with improvements in aspects of mental health.1 In the case of acute bouts of aerobic exercise completed at intensities prescribed for cardiovascular enhancement, state anxiety reductions last for two to four hours after the cessation of activity.2 3 These anxiety reductions have also been shown to be greater than control or placebo interventions.3 Compared with the large body of research on acute aerobic exercise, relatively few studies have involved resistance training. The findings of this work indicate that acute bouts of resistance training either do not result in reduced state anxiety, 4 5 or result in reductions that are delayed for anywhere from 30 minutes 6 up to 120 minutes after the cessation of exercise. [7][8][9] Hale and Raglin 10 observed reductions in state anxiety after resistance training in persons with average or above average baseline values of state anxiety, but not in persons with baseline values that fell one standard deviation below the published norms. 11Hence, with some exceptions, it appears that acute aerobic exercise is more effective in reducing state anxiety than resistance training.Research has been conducted to investigate the influence of exercise sessions that combine aerobic and resistance activity-that is, cross training-on physiological variables such as VO 2 MAX, insulin resistance, and blood hormone levels, 12-14 but the psychological influences of this form of exercise have not been investigated. Given the apparent differences in the state anxiety responses to aerobic and resistance exerc...
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