This study is the first to demonstrate that the FS can be used to self-regulate exercise intensity in RT. The lower the FS descriptor, the higher the weight lifted. In addition, the load self-selected for each FS descriptor was reliable across the four sessions.

No abstract

No abstract

Objective: We compared the cognitive performance and neuroelectric responses during a selective attentional task in judo athletes with different levels of expertise. Methods: Judo black and white belt athletes performed both general and specific fitness tests while simultaneously completing a Stroop color-word test recorded by 64 electroencephalogram channels. Results: Cognitive behavioral performance and event-related spectral perturbation (ERSP) present no differences between groups. However, the topographic analysis found different neural source patterns in each group. Judo black belts compared to judo white belts presented a greater peak amplitude of P300 in the middle frontal gyrus and of N200 in the cuneus, but slower latency of P300 in the precuneus. Conclusion: Despite no difference in cognitive behavioral performance, judo expertise causes a difference in the allocation of attentional and conflict detection neural resources.

Tavares, VDdO, Agrícola, PMD, Nascimento, PHD, Oliveira Neto, L, Elsangedy, HM, and Machado, DGS. The effect of resistance exercise movement tempo on psychophysiological responses in novice men. J Strength Cond Res 34(5): 1264–1273, 2020—This study aimed to compare the effects of movement tempo in resistance exercise (RE) on psychophysiological responses in novice men. Seventeen novice men (24.5 ± 3.2 years; 79.3 ± 8.22 kg; 1.76 ± 0.06 m) performed the 10 repetition maximum (10RM) test for bench press and knee extension in 2 sessions (test-retest) and 2 RE training sessions with different movement tempos in a random and counterbalanced order (4 sets of 10 repetitions). The low tempo RE (LTRE) session was performed using 50% 10RM with 3-0-3-0 seconds (concentric, pause, eccentric, and pause, respectively). The moderate tempo RE (MTRE) session was performed using 80% 10RM with 1-0-1-0 seconds (concentric, pause, eccentric, and pause, respectively). Affective valence (Feeling Scale), perceived activation (FAS), attentional focus, and ratings of perceived exertion (Borg 6–20) were reported after each set. A two-way analysis of variance with repeated measures showed only a significant main effect of the set (all ps < 0.05), indicating changes between sets but not between LTRE and MTRE. In addition, a paired-samples t-test did not find significant differences between LTRE and MTRE, on average, in any psychophysiological responses (all ps > 0.16). Thus, for the protocol tested, there is no psychophysiological advantage to using either LTRE or MTRE in novice men. From a practical perspective, for psychophysiological responses, the present results suggest that it is up to the trainer/coach to decide which RE movement tempo to use, which will depend on the purpose of the training period, specificity, client tolerance of and preference for exercise intensity, and movement tempo.

No abstract

Chronic drug abuse has been shown to cause dysfunctions on the frontal lobe and affect cognition, cardiac autonomic control and psychosocial aspects. Despite physical exercise has been shown to improve cerebral functioning, the effects of a high intensity exercise training program needs to be further explored in a drug abuse condition. The patient was a 32-year-old male who has been an alcohol and crack/cocaine user for 20 years. The high intensity exercise training protocol consisted of four 30-second "all-out" bouts performed three times per week during four weeks. The participant had electroencephalographic (EEG) activity, cognition, cardiac autonomic control and psychosocial questionnaires evaluated before and after high intensity exercise training. Prefrontal cortex (PFC) oxygenation during an incremental running exercise test was also recorded. EEG topographical analysis revealed greater PFC activation during the cognitive test. Performance on the cognitive test was enhanced (l number of total errors and reaction time). Parasympathetic cardiac indices, including RMSSD, SDNN, Pnn50% and HF power increased by 77.4%, 83.3%, 57.7% and 293.2%, respectively. Sleep quality increased 23% and anxiety levels decreased 52.6%. Psychological and social domains increased 5.3% and 13.7%, respectively. In addition, incremental treadmill running time increased 12.5% and PFC oxyhemoglobin increased 228.2% at the beginning of the treadmill test, 305.4% at the middle and 359.4% at the end of the test. Thus, high intensity exercise training improved PFC functioning, cardiac autonomic control and psychological parameters. These results might indicate high intensity exercise as an alternative and non-pharmacological tool to help the rehabilitation of a drug abuser.

We aimed to investigate the influence of interoceptive accuracy on affective valence, arousal, and ratings of perceived exertion (RPE) during 20 minutes of aerobic exercise at both moderate and heavy intensity among physically inactive men. We divided our participant sample into men with poor heartbeat perception (PHP, n = 13) and good heartbeat perception (GHP, n = 15), based on their cardioceptive accuracy. We measured their heart rate reserve (%HRreserve), perceived affective valence (Feeling Scale; +5/-5), perceived arousal (Felt Arousal Scale, 0–6), and ratings of perceived effort (RPE; Borg scale 6–20) every five minutes during an exercise session on a bicycle ergometer. During moderate-intensity aerobic exercise, the GHP group presented a greater decline in affective valence ( p = 0.010; d = 1.06) and a greater increase in RPE ( p = 0.004; d = 1.20) compared to the PHP group, with no group differences in %HRreserve ( p = 0.590) and arousal ( p = 0.629). Psychophysiological and physiological responses to the heavy-intensity aerobic exercise were not different between groups. We concluded that the influence of interoceptive accuracy on psychophysiological responses during submaximal fixed-intensity aerobic exercise was intensity-dependent in these physically inactive men.