ABSTRACT
We investigated the acute effects of aerobic exercise with blood flow restriction (BFR) on mood state in American football athletes. Twenty-two male American football athletes were randomly assigned to three experimental conditions: 1) aerobic exercise (AE: 40% VO2max), 2) aerobic exercise with BRF (AEâ¯+â¯BFR: 40% VO2 max), and 3) high-intensity interval exercise (HIIE: 80% and 40% VO2max during exercise and the active intervals, respectively). Mood state and total mood disturbance (TMD) were assessed before, immediately post, and 1â¯h post-exerciser. Ratings of perceived exertion (RPE) were measured 30â¯min post-exercise. AEâ¯+â¯BFR and HIIE significantly (pâ¯<â¯0.05) increased fatigue and tension compared to baseline immediately post-exercise, whereas vigor significantly (pâ¯<â¯0.05) decreased at the same time point for both conditions. TMD increased significantly (pâ¯<â¯0.05) for AEâ¯+â¯BFR and HIIE immediately post-exercise and it remained elevated up to 1â¯h post-exercise for AEâ¯+â¯BFR. AE did not significantly (pâ¯>â¯0.05) affect mood state or TMD and it was significantly (pâ¯<â¯0.05) lower than AEâ¯+â¯BFR and HIIE. AEâ¯+â¯BFR and HIIE also elicited significantly (pâ¯<â¯0.05) greater RPE levels than AE 30â¯min post-exercise. Therefore, AEâ¯+â¯BFR induces acute impairments in mood state and RPE levels in a similar fashion to HIIE.
Subject(s)
Affect/physiology , Athletes/psychology , Exercise/psychology , Hemodynamics/physiology , Regional Blood Flow/physiology , Adult , Exercise/physiology , Football , High-Intensity Interval Training , Humans , Male , Muscle, Skeletal/physiology , Oxygen Consumption/physiology , Physical Exertion , Treatment Outcome , Young AdultABSTRACT
The objective of this study was to analyze the effect of supplementation with creatine and glutamine on physical fitness of military police officers. Therefore, an experimental double blind study was developed, with the final sample composed by 32 men randomly distributed into three groups: a group supplemented with creatine (n=10), glutamine (n=10) and a placebo group (n=12) and evaluated in three distinct moments, in an interval of three months (T1, T2 and T3). The physical training had a weekly frequency of 5 sessions × 90 min, including strength exercises, local muscular resistance, flexibility and both aerobic and anaerobic capacity. After analyzing the effect of time, group and interaction (group × time) for measures that indicated the physical capabilities of the subjects, a significant effect of time for the entire variable was identified (p<0,05). However, these differences were not observed when the univaried intragroups and intergroups analysis was performed (p>0,05). In face of the results it was concluded that supplementation with creatine and glutamine showed no ergogenic effect on physical performance in military police officers.