The purpose of this study was to compare the internal load responses (session rating perceived exertion [RPE] and salivary cortisol) between simulated official matches (SM OM). Ten professional basketball players participated in 2 OMs SMs during competition season. Subjects provided saliva samples 30 minutes before prematch warm-up (PRE) 10 after end match. Session RPE (CR-10 scale) assessed each results from 2-way analysis variance showed significant differences for post-OM cortisol as...

Purpose: To analyze the effects of a very congested match schedule on total distance (TD) covered, high-intensity-running (HIR) distance, and frequency accelerations body-load impacts (BLIs) performed in team under-15 soccer players (N = 10; 15.1 ± 0.2 y, 171.8 4.7 cm, 61 6.0 kg) during an international youth competition. Methods: Using global positioning systems, player performances were repeatedly monitored 5 matches over 3 successive days. Results: Significant differences observed between...

Mortatti, AL, Moreira, A, Aoki, MS, Crewther, BT, Castagna, C, de Arruda, AFS, and Filho, JM. Effect of competition on salivary cortisol, immunoglobulin upper respiratory tract infections in elite young soccer players. J Strength Cond Res 26(5): 1396–1401, 2012—The present study examined the effect a 20-day period mucosal immunity, (URTI) male players (n = 14). The were monitored during main under-19 Brazilian championship, which 7 matches played 20 days. Saliva samples collected morning...

This study investigated the effects of a congested match schedule (7 matches played in 7 days) on steroid hormone concentrations, mucosal immunity, session rating perceived exertion (S-RPE) and technical performance 16 elite youth soccer players (14.8 ± 0.4 years; 170.6 9.4 cm; 64.9 kg). No change was observed for salivary cortisol concentration across time points (P = 0.33; effect size [ES] 0.13-0.48). In contrast, there decrease testosterone IgA (SIgA) concentrations from 1st compared with...

The aim of this study was to compare the salivary cortisol (sC) and immunoglobulin A (sIgA) responses simulated official Brazilian Jiu-Jitsu (BJJ) matches. Saliva samples were collected from 9 male BJJ athletes before (pre) after (post) 2 matches (SMs) (OMs) performed during different competitions. Salivary sIgA concentrations (absolute concentration [sIgAabs] secretion rate [sIgArate]) measured by an enzyme-linked immunosorbent assay. For sC, there effect condition (SM vs. OM) (p < 0.05) a...

Sports training and competition are significant sources of stress, especially for young athletes. It is well known that physiological psychological stressors induce neuroendocrine responses could modulate immune system function. However, to date, little about the soccer players during a competitive season. Therefore, this study examined effects 21-week season divided into preseason, season, detraining on salivary immunoglobulin A (SIgA), upper respiratory tract infection (URTI) symptoms,...

Freitas, TT, Alcaraz, PE, Calleja-González, J, Arruda, AFS, Guerriero, A, Kobal, R, Reis, VP, Pereira, LA, and Loturco, I. Differences in change of direction speed deficit between male female national rugby sevens players. J Strength Cond Res 35(11): 3170-3176, 2021-The aims this study were to assess the (COD) different tasks investigate differences COD ability Thirty-six elite players from Brazilian National senior teams (18 males 18 females) completed following physical assessments: squat...

Abstract The aim of the present study was to investigate influence maximum strength and power levels on change direction (COD) ability deficit in elite soccer rugby players. Seventy-eight athletes (soccer, n = 46; rugby, 32) performed following assessments: squat countermovement jumps (SJ CMJ), 1 repetition-maximum half-squat exercise (HS 1RM), peak (PP) jump-squat exercise, 20-m linear sprint Zigzag COD tests. Utilizing median split analysis, were divided into two groups according their HS...

The purpose of this study was to verify the effect periodized training program on internal load, mood states, and vertical jump capacity young volleyball players. Internal load measured using session rating perceived exertion (session-RPE) method. To assess profile states questionnaire completed once a week. tests were performed before after period. main findings (1) greater during preparatory mesocycle than competitive mesocycle, for both U16 U19 groups; (2) higher U16; (3) despite...

Abstract Loturco, I, Suchomel, T, Kobal, R, Arruda, AFS, Guerriero, A, Pereira, LA, and Pai, CN. Force-velocity relationship in three different variations of prone row exercises. J Strength Cond Res 35(2): 300–309, 2021—This study examined the force-velocity tested possibility determining relative loading intensity percentage 1 repetition maximum (%1RM) 3 Thirty male top-level athletes from 2 sports (National Team rugby union players professional mixed martial arts fighters) were submitted...

This study investigated the effect of a 2-week overloading training phase followed by tapering on internal load (ITL), salivary cortisol, stress tolerance, and upper respiratory tract infections symptoms (URTI) in 11 male young soccer players (16.0 ± 0.5 yrs). Ratings perceived exertion (session- RPE) were taken after each session (N = 194) to determine ITL. Saliva sampling was conducted at end week cortisol concentration assessed ELISA. DALDA WURSS-21 questionnaires administered every...

The aim of the present study was to examine effect an intensified training phase followed by a tapering on salivary immunoglobulin A concentration and upper respiratory tract infection (URTI) symptoms in young male basketball players. session rating perceived exertion method used quantify internal load, Wisconsin Upper Respiratory Symptom Survey-21 questionnaire assess URTI symptoms. Yo-Yo IR1 test saliva collection were carried out at beginning (T1), after (T2), (T3). higher load observed...

The aim of this study was to investigate the change direction (COD) ability and deficits elite rugby union players, discriminating between position (backs forwards), “faster slower players”, in multiple COD tasks. Twenty-four male players from Brazilian senior National team completed following assessments: Squat countermovement jumps; drop jump; standing long jump, horizontal triple 40-m linear sprint; Pro-agility, L-Drill, Zig-zag tests; squat 1-repetition maximum. differences backs...

This study investigated the contribution of salivary testosterone (sT) concentration, years from peak height velocity (YPHV) and by body mass interaction on jumping performance (Countermovement jump; CMJ) aerobic fitness (Yo-Yo intermittent endurance test, level 1) in young elite soccer players. Forty-five participants (age: 12.5 ± 0.5y; mass: 48.6 10.2kg, height: 155.7 10.0cm) belonging to a top Brazilian club were evaluated at four time points across single semester. None assessed players...

Athletes engaged in strenuous training might experience transient immune suppression that could lead to greater incidence of upper respiratory tract infections (URTI). Since interleukin 21 (IL-21) stimulates immunoglobulin A (IgA) secreting cells and a low level this is associated with increased URTI, the aim present study was investigate effect basketball match on salivary cortisol (sC), IL-21 (sIL-21) IgA (sIgA) levels. Twenty male players participated an official game two teams (10 each...

The purpose of this study was to investigate the effect court size on physiological responses and physical performance young elite basketball players. Twelve male players (18.6 ± 0.5 years; 88.8 14.5 kg; 192.6 6.5 cm) from an under-19 team performed two small-sided games (matches) with different areas (28x15 m 28x9 m; 28x15 protocols). number (3x3) kept same in each protocol. a repeated-sprint ability (RSA) test before after match. Blood lactate concentration collected (pre) (post) matches,...

The purpose of the present study was to examine SIgA responses (concentration [SIgAabs] and a secretion rate [SIgArate]) official simulated competitive matches in young soccer players. sample composed 26 male players (age 15.6 ± 1.1 yrs, stature 177.0 6.1 cm, body mass 70.5 5.7 kg). Four (two [SM] two [OM]) were conducted. consisted halves 35 min with 10 rest interval. Each assessed player participated only one SM OM. All performed same week, during season, at time day (9:00 am), separated...

To examine the variations in velocity of contraction (Vc) assessed using tensiomyography, vertical jumping ability, and sprinting speed induced by 4 different exercise protocols (ie, strength, sprint, plyometric, technical training sessions) 14 male national-team rugby players (age 21.8 [2.6] y, weight 83.6 [8.5] kg, height 177.4 [6.7] cm).Physical tests were conducted immediately before after distinct workouts following order: tensiomyography rectus femoris biceps muscles, squat...

Loturco, I, McGuigan, MR, Freitas, TT, Bishop, C, Zabaloy, S, Mercer, VP, Moura, TBMA, Arruda, AFS, Ramos, MS, Pereira, LA, and Pareja-Blanco, F. Half-squat jump squat exercises performed across a range of loads: differences in mechanical outputs strength deficits. J Strength Cond Res 37(5): 1052-1056, 2023-The aim this study was to compare the peak force (PF), power (PP), velocity (PV) produced during half-squat (HS) (JS) executed at 20, 40, 60, 80% 1 repetition maximum (1RM) HS (HS 1RM)...

Abstract This study evaluated whether transcranial direct current stimulation (tDCS) could change physiological and psychological responses during vigorous exercise with a constant load. 13 sedentary males (23.0±4.2 years; 25.6±4.2 kg/m²) took part in this randomized, crossed-over, sham-controlled, double-blinded study. Participants underwent 2 sessions anodal or sham tDCS (2 mA, 20 min) applied before over the left temporal cortex targeting insular cortex. The was performed at intensity...

This study aimed to examine and compare mood states profile physical performance during different training phases between 2 groups of adolescent basketball players that were differentiated according baseline testosterone concentration (T). The submitted an intensified period (OVL) followed by a tapering (TP). Twenty-three young male initiated the study. Experimental criteria data used stratify 16 into high-testosterone (HTC) or low-testosterone (LTC) groups. All athletes undertook 5 weeks...

The aim of this study was to investigate salivary T changes and its relationship with power performance over a 1-year competitive season in elite under 15 (U15) 17 (U17) soccer players. Soccer players were recruited from 1 club that has been participated the main state national leagues for these age groups. divided into 2 categories (U15, n = 16 U17, 23). A resting saliva sample taken determine level, assessed using countermovement jump test bar 30% body mass on athletes' shoulders 3...