Mental fatigue is a psychobiological state caused by prolonged periods of demanding cognitive activity. Although the impact mental on and skilled performance well known, its effect physical has not been thoroughly investigated. In this randomized crossover study, 16 subjects cycled to exhaustion at 80% their peak power output after 90 min task (mental fatigue) or watching emotionally neutral documentaries (control). After experimental treatment, mood questionnaire revealed (P = 0.005) that...

IMPELLIZZERI, F. M., E. RAMPININI, A. J. COUTTS, SASSI, and S. M. MARCORA. Use of RPE-Based Training Load in Soccer. Med. Sci. Sports Exerc., Vol. 36, No. 6, pp. 1042–1047, 2004. Purpose: The ability to accurately control monitor internal training load is an important aspect effective coaching. aim this study was apply soccer the RPE-based method proposed by Foster et al. quantify (session-RPE) assess its correlations with various methods used determine based on HR response exercise....

The aim of this study was to examine the effects exercise type, field dimensions, and coach encouragement on intensity reproducibility small-sided games. Data were collected 20 amateur soccer players (body mass 73.1 +/- 8.6 kg, stature 1.79 0.05 m, age 24.5 4.1 years, VO(2max) 56.3 4.8 ml x kg(-1) min(-1)). Aerobic interval training performed during three-, four-, five- six-a-side games three differently sized pitches, with without encouragement. Heart rate, rating perceived exertion (RPE)...

Exercise is a stressor that induces various psychophysiological responses, which mediate cellular adaptations in many organ systems. To maximize this adaptive response, coaches and scientists need to control the stress applied athlete at individual level. achieve this, precise manipulation of training load are required. In 2003, authors introduced theoretical framework define conceptualize measurable constructs process. They described as having 2 components: internal external load. The aim...

The aim of this study was to compare the effects specific (small-sided games) vs. generic (running) aerobic interval training on physical fitness and objective measures match performance in soccer. Forty junior players were randomly assigned either (n=20) or consisting 4 bouts min at 90-95 % maximum heart rate with 3 active rest periods, completed twice a week. following outcomes measured baseline (Pre), after weeks pre-season (Mid), further 8 during regular season (Post): oxygen uptake,...

The aim of this study was to examine the construct validity selected field tests as indicators match-related physical performance. During competitive season, eighteen professional soccer players (age 26.2 ± 4.5 yrs, mass 80.8 7.8 kg, and height 181.9 3.7 cm) completed an incremental running test exhaustion, a vertical-jump repeated-sprint ability (RSA) test. Match performance quantified during official matches using video-computerized, semi-automatic, match analysis image recognition system,...

Purpose: To establish the validity and reliability of a new vertical jump force test (VJFT) for assessment bilateral strength asymmetry in total 451 athletes. Methods: The VJFT consists countermovement jumps with both legs simultaneously: one on single platform, other leveled wooden platform. Jumps right or left leg platform were alternated. Bilateral was calculated as [(stronger − weaker leg)/stronger leg] × 100. A positive sign indicates stronger leg; negative leg. Studies 1 (N = 59) 2 41)...

Purpose To investigate the effects of mental fatigue on soccer-specific physical and technical performance. Methods This investigation consisted two separate studies. Study 1 assessed performance 12 moderately trained soccer players using Yo-Yo Intermittent Recovery Test, Level (Yo-Yo IR1). 2 14 experienced Loughborough Soccer Passing Shooting Tests (LSPT, LSST). Each test was performed occasions preceded, in a randomized, counterbalanced order, by 30 min Stroop task (mentally fatiguing...

It is thought that perception of effort during physical tasks the conscious awareness central motor command sent to active muscles. The aim this study was directly test hypothesis by experimentally varying and measuring movement-related cortical potential (MRCP). Sixteen healthy, recreationally men made unilateral dynamic elbow flexions lift a light (20% one repetition maximum, 1RM) heavier (35% weight with fatigued arm nonfatigued while rating perceived (RPE), biceps brachii electromyogram...

Given the important role of brain in regulating endurance performance, this comparative study sought to determine whether professional road cyclists have superior inhibitory control and resistance mental fatigue compared recreational cyclists.After preliminary testing familiarization, eleven nine visited lab on two occasions complete a modified incongruent colour-word Stroop task (a cognitive requiring control) for 30 min (mental exertion condition), or an easy 10 (control condition)...

The aim of this study was to test the hypotheses that prolonged mental exertion (i) reduces maximal muscle activation and (ii) increases extent central fatigue induced by subsequent endurance exercise.The neuromuscular function knee extensor muscles assessed in 10 male subjects two different conditions: before after leading an easy cognitive task (control). Both tasks lasted 90 min were followed submaximal isometric exercise until exhaustion (endurance task), a third assessment function.Time...

Purpose The purpose of the study was to investigate effects mental fatigue on intermittent running performance. Methods Ten male team sports players performed two identical self-paced, protocols. trials were separated by 7 d and preceded, in a randomized-counterbalanced order, 90 min either emotionally neutral documentaries (control) or AX-continuous performance test (AX-CPT; fatigue). Subjective ratings vigor measured before after these treatments, motivation recorded protocol. Velocity,...

It has been shown that the mental fatigue induced by prolonged self-regulation increases perception of effort and reduces performance during subsequent endurance exercise. However, physiological mechanisms underlying these negative effects are unclear. The primary aim this study was to test hypothesis exacerbates central whole-body Twelve subjects performed 30 min either an incongruent Stroop task induce a condition or congruent (control condition) in random counterbalanced order. Both...

This investigation assessed the impact of three cognitively demanding tasks on cognitive performance, subjective, and physiological indicators mental fatigue. Following familiarization, participants completed four testing sessions, separated by 48 h. During each session, watched a 45-min emotionally neutral documentary (control) or one following computer tasks: Psychomotor Vigilance Task (PVT); AX-Continuous Performance Test (AX-CPT); Stroop Task. Mental fatigue was before at regular periods...

Locomotor muscle fatigue, defined as an exercise-induced reduction in maximal voluntary force, occurs during prolonged exercise, but its effects on cardiorespiratory responses and exercise performance are unknown. In this investigation, a significant locomotor force (-18%, P < 0.05) was isolated from the metabolic stress usually associated with fatiguing using 100-drop-jumps protocol consisting of one jump every 20 s 40-cm-high platform. The effect treatment time to exhaustion high-intensity...

Abstract Objective To confirm, in a randomized controlled trial (RCT), the efficacy of high‐intensity progressive resistance training (PRT) restoring muscle mass and function patients with rheumatoid arthritis (RA). Additionally, to investigate role insulin‐like growth factor (IGF) system exercise‐induced hypertrophy context RA. Methods Twenty‐eight established, RA were either 24 weeks twice‐weekly PRT (n = 13) or range movement home exercise control group 15). Dual x‐ray...