Influence of resistance exercise of different intensities on state anxietyand blood pressure

Purpose: The purpose of this investigation was to examine selected psychobi ological responses to acute bouts of resistance exercise (RE) of different intensities. Methods: Eighty-four participants were classified as experienc ed or inexperienced and then randomly assigned to three conditions: 1) 50% of one repetition maximum(1RM), 2) 80% IRM, or 3) control condition. RE con sisted of performing three sets of four exercises between 12 to 20 reps in the 50% IRM condition and four to right reps in the 80% IRM condition. Depe ndent variables consisted of stale anxiety (SA), mood states (POMS), systol ic BP (SBP), diastolic BP (DBP), and heart rate (HR). These variables were assessed before as wells 1, 20, 60, 120, and 180-min following the conditio ns. Data were analyzed with a 2 (experience) x 3 (conditions) x 6 (trials) mixed model ANOVA and Tukey post-hoc tests. Results: Results indicated that SA decreased significantly (P < 0.05) 180 min following. the 508 IRM condi tion. A significant decrease (P < 0.05) in vigor occurred immediately follo wing the 50% IRM condition and persisted for 20 min. SEP increased signific antly (P < 0.05) immediately following the 80% 1RM condition HR increased s ignificantly (P < 0.05) following both RE conditions. No significant differ ences were found between the experienced or inexperienced participants. Con clusions: An acute bout of RE at 50% 1RM is associated with an immediate re duction in vigor followed by a significant decrease in SA that emerged 180 min following exercise.