Ghazi Racil

• Ph.D
• Associate Professor at Higher institute of physical education and sports of Gafsa

Introduction Understanding the factors influencing disruptive behaviour (DB) in Physical Education (PE) is essential for optimizing learning environments and student engagement. The aim of this study was to measure the frequency of DB in PE at two different times of the day, morning and afternoon, over an eight-week period. Methods One hundred thi...

Objectives: There is a lack of studies that investigate the relationship between anthropometric profiles, biological maturity, and specific physical performances in young male basketball players. This study aimed to evaluate the development of anthropometric characteristics and physical performance across different age and maturity groups among mal...

Background: Success in basketball is influenced by various factors, including biological maturation. Peak height velocity (PHV) is a key indicator of maturation, playing an important role in assessing the performance of basketball players. This study aimed to analyze the effects of maturational status, chronological age, and gender on anthropometri...

Motor skill development is crucial in human growth, evolving with the maturation of the nervous and musculoskeletal systems. Quantifying these skills, especially coordinative abilities, remains challenging. This study aimed to assess the performance of five motor tasks in children and adolescents using high-speed video analysis, providing data for...

Background/Objectives: Physical performance is becoming increasingly critical in basketball, as it directly influences players’ agility, power, and endurance. This study aimed to assess the progression of body composition and physical performance metrics across different ages and genders, establishing age- and gender-specific reference values for T...

Racil, G, Padulo, J, Trabelsi, Y, Frizziero, A, Russo, L, and Migliaccio, GM. Rhythmic exercises before basketball training: A study on motor skills, static balance, and reaction speed in school-aged children. J Strength Cond Res XX(X): 000-000, 2024-The aim of this study was to investigate the effects of combining rhythmic exercises with basketbal...

SUMMARY Background. Limited research has investigated the relationship between anthropometric profile, biological maturity, and specific physical performances in female basketball players. Therefore, the aim of this study was to assess the influence of chronological age and maturity status on anthropometric variables and physical performances. Meth...

This study aimed to characterize match peak speeds, during a 20-second time window (10 seconds immediately before and after the match peak speed), in soccer matches. Twenty elite soccer players were monitored with global navigation satellite system (GNSS) devices during six soccer matches from the Brazilian first division. After identifying the pea...

Objectives: This study examines the potential impact of Ramadan fasting on sleep patterns and physical fitness in under 14 (U14) and under 17 (U17) female handball players. Methods: For this study, sixty-five female handball players’ (U14, n = 33 and U17, n = 32) sleep habits were assessed before (BR) and during the first (R1) and last weeks (R4) o...

Introduction Predict running performances is very important for athletes and trainers. Sport researchers have therefore developed certain tools to predict running performances, but only in non-obstacle races. This study aimed to develop and test the validity and accuracy of an equation for predicting 3,000-m steeplechase performance (PerfSteeple)....

Introduction: Predict running performances is very important for athletes and trainers. Sport researchers have therefore developed certain tools to predict running performances, but only in non-obstacle races. This study aimed to develop and test the validity and accuracy of an equation for predicting 3,000-m steeplechase performance (PerfSteeple)....

Interval-training is widely implemented among populations with obesity to decrease metabolic-disorders; however, high-intensity-interval-training (HIIT) has rarely been studied in severely obese adolescent girls. Therefore, the aim of this study was to compare the effects of 8 weeks of (HIIT) or moderate-intensity interval-training (MIIT), on cardi...

This study investigates the relationship between employability and mental health among Tunisian sports science graduates post-2011 revolution, within the context of a prolonged socio-economic crisis and persistent unemployment lasting up to 10 years. The research included two studies. Study (1) quantitatively assessed 156 unemployed and 162 employe...

This study aimed to explore the feasibility and face validity of predicting maximum strength 1 repetition maximum (1-RM) and 4-6 RM in athletes across different sports specialties, based on the relationship between muscle strength and BM. One hundred fifteen male athletes, aged 23.63 6 6.77 years and participating in diverse sports specialties , we...

Teaching practice is the set of regularities of educational intervention. The coordination and complementarity between all of these regularities of intervention is a necessity for the success of the teaching profession. We seek in this study the influence of the intersection of professional seniority and gender of PE teachers on teaching practice....

This study aims to determine the effect of flexibility exercises combined with plyometrics in hurdles race, on physical fitness, motor skills (MS) and hip range of motion.

Mode de présentation : Orale. Champ disciplinaire : physiologie du sport de l'exercice et entrainement sportif Titre : Effets de la flexibilité combinée à des exercices plyométriques par rapport à un mode plyométrique ou de flexibilité isolée chez des adolescents masculins pratiquant la course de haies. Résumé : L'étude vise à déterminer l'effet d'...

Mode de présentation : Orale. Champ disciplinaire : sport et santé Titre : Effets plus importants d'un entraînement par intervalles d'intensité élevée que d'un entraînement d'intensité modérée sur les variables cardiométaboliques, la concentration de leptine dans le sang et la perception de l'effort chez des adolescentes obèses. Résumé :Cette étude...

L'exercice physique est recommandé pour lutter contre l'obésité. L'exercice intermittent pourrait être un moyen d'améliorer l'adhésion, mais peu est connu en fonction de la classe d'obésité. L'objectif de cette étude était d'examiner les effets d'un programme d'exercices intermittents sur des femmes obèses en fonction de leur classe d'obésité. 53 f...

The nature of teaching practice is intricate and diverse. In their daily work, physical education (PE) teachers employ a range of skills to effectively accomplish their dual pedagogical and didactic mission. Ensuring coordination and complementarities among these professional skills becomes a necessity. In this study, our objective was to explore t...

Background Carbohydrate loading is an established sports nutrition strategy for endur- 16 ance exercise performance. We tested if carbohydrate loading could improve the performance of 17 elite soccer players under ecologically valid circumstances using Global Positioning System (GPS) data. Methods Twenty-two adult Iran Premier league soccer player...

Background: Carbohydrate loading is an established sports nutrition strategy for endur-16 ance exercise performance. We tested if carbohydrate loading could improve the performance of 17 elite soccer players under ecologically valid circumstances using Global Positioning System (GPS) data. Methods: Twenty-two adult Iran Premier league soccer player...

This study aimed to investigate the impact of moderate- or high-intensity interval training (MIIT or HIIT) on anthropometric and biological measurements in four groups of females with obesity. Fifty-seven participants were divided into a moderate obesity group (MOG, n = 29) and a severe obesity group (SOG, n = 28). Two sub-groups were established t...

This study investigated the effects of short-term and long-term periods (8 and 16 weeks) of high-intensity interval training (HIIT) on cardiovascular components, blood lipids, and 6-min walking test performance in obese young boys (age = 16.2 ± 0.7) with >34% body fat. The participants were split into two groups: severe obesity (SOG; n = 17) and mo...

Purpose: This study aimed to investigate the effect of re-warm-up (RWUP) activities consisting of three sets of 15-m sprints with weighted vests on 20-m sprint performance after the break. Methods: Using a randomized, and counterbalanced cross-over design, twenty U15 elite soccer players performed four RWUP trials which consisted of 15-min of passi...

The present study aimed to examine the differences in sleep hygiene, balance, strength, agility, and maximum aerobic speed (MAS) between two groups of female handball players aged under 14 (U14) and under 17 (U17) years. Seventy-two female handball players participated and were divided into two groups according to age: U14 (n = 36, age: 13.44 ± 0.5...

This study aims to verify the effect of dual sports as well as their practice environments on the determination of MI modality and vividness. 240 athletes practicing judo, karate, and tennis; boys and girls aged 13 to 15 years, took part in this study. This sample was divided into two age groups: (age-group 1 and age group 2). The "Movement Imagery...

The interest of motor imagery practice on performance and motor learning is well-established. However, the impact of sporting and physical practice on motor imagery vividness is currently unclear, especially in youth. Two-hundred-and-forty adolescents were recruited to form different groups. For each age group (age-group 1, A-G1 with 13years≤age≤14...

To compare the effects of 12 weeks of high-intensity interval training (HIIT) versus moderate-intensity interval training (MIIT) on hematological and inflammatory markers in youth females, 38 overweight/obese females (16.4±1.0 yrs.) were randomly assigned to HIIT (2×6–8 repetitions of 30 s at 100–110% maximal aerobic speed (MAS), with 30 s active r...

This study examined the validity, precision and accuracy of the predictions of distance running performances in female runners from three nomograms. Official rankings of French women for the 3000-m, 5000-m, and 10,000-m track-running events from 2005 to 2019 were examined. Only female runners who performed in the three distance events within the sa...

The aim of the study was to assess the effects of multidirectional plyometric training (MPT) on vertical jump height, change of direction performance (CODP), and dynamic postural control (DPC) in young soccer players. Twenty-eight young male soccer players were randomly assigned to an experimental group (EG, n = 14; age: 11.8 ± 0.4 years) and a con...

Purpose The last decades have witnessed the perfection of video-based motion capture to the point at which it is now almost "hands-free. Recently, low-cost action cameras that have the characteristics to be used in the depths of the sea have become highly popular. For that, the GoPro™ camera is considered the best performing tool. This is of import...

Background: This study aims to determine the effect of flexibility exercises combined with plyometrics in hurdles race, on physical fitness, motor skills (MS) and hip range of motion. Methods: 34 male hurdlers, (age = 15.7±0.7 years, body mass = 59.7±2.3 kg, height = 170.8±2.4 cm) were randomly assigned to four independent groups. The (Gflex+ply...

Sprinters use the weighted sled to improve acceleration ability starting with the standing position, but little information is available. The purpose of this study was to examine the effect of sled loads on velocity achieved during a short distance sprint from the starting block and to develop a regression equation to determine the sled load in rel...

Introduction La classification du pied plat à l’âge de 11 à 15 ans, se situe entre « la pathologie » et « le morphotype ». Bien que le lien proposé entre la posture du pied et la blessure semble plausible sur le plan biomécanique et physiologique, les résultats d’études prospectives de grande envergure ne fournissent pas de preuves définitives qu’u...

Sprinters use the weighted sled to improve acceleration ability starting with the standing position, but little information is available. The purpose of this study was to examine the effect of sled loads on velocity achieved during a short distance sprint from the starting block and to develop a regression equation to determine the sled load in rel...

Background Pulmonary rehabilitation (PR) is a key treatment of chronic obstructive pulmonary disease (COPD) but studies are still needed to identify the most pertinent criteria to personalize this intervention and improve its efficacy. Objective This real-life retrospective study compared the effects of home-based PR on exercise tolerance, anxiety...

The aim of the current study was to compare 2 equations to predict peak oxygen uptake (V̇O2peak) in obese women, according to their obesity class. 92 maximal cardiopulmonary exercise testing sets (CPET with initial and subsequent increments set to achieve an exercise duration between 8–12 min) were retrospectively analysed. These CPET were divided...

Purpose: The aim of the current study was to examine the impact of a physical exercise programme including rhythmic elements (regular and irregular tempos) on physiological variables, motor skills (MS), and jump performances in obese girls. Methods: Thirty-six obese girls (age: 10.4 ± 0.9 years, body mass: 58.7 ± 4.0 kg, height: 1.37 ± 0.04 m, b...

ABSTRACT The aim of this study was to investigate the effects of two soccer-training seasons on physical fitness and hormone concentrations in elite youth soccer players. Twenty male elite soccer players (SP, age 14.5 ± 0.4 years) and 20 male control subjects (CS, age 14.3 ± 0.3years) participated to the study. Anthropometric measurements, aerobic...

obesity Article with Hgh intensity training

This study examined the effects of high- vs. moderate-intensity interval training on cardiovascular fitness, leptin levels and ratings of perceived exertion (RPE) in obese female adolescents. Forty-seven participants were randomly assigned to one of three groups receiving either a 1:1 ratio of 15 s of effort comprising moderate-intensity interval t...

This study examined the effects of high- vs. moderate-intensity interval training on cardiovascular fitness, leptin levels and ratings of perceived exertion (RPE) in obese female adolescents. Forty-seven participants were randomly assigned to one of three groups receiving either a 1:1 ratio of 15 s of effort comprising moderate-intensity interval t...

ABSTRACT: This study examined the effects of high- vs. moderate-intensity interval training on cardiovascular fitness, leptin levels and ratings of perceived exertion (RPE) in obese female adolescents. Forty-seven participants were randomly assigned to one of three groups receiving either a 1:1 ratio of 15 s of effort comprising moderateintensity i...

The aim of this study was to compare the effects of 12 weeks of high-intensity interval training (HIIT) with the effects of 12 weeks of plyometric exercise combined with HIIT (P+HIIT) on anthropometric, biochemical, and physical fitness data in young obese females. Sixty-eight participants (age, 16.6 ± 1.3 y; body mass, 82.8 ± 5.0 kg; body fat, 39....

Introduction: Physical exercise is recommended to tackle obesity. However, obese individuals often do not closely adhere to training programmes. Intermittent exercise might be a means to improve compliance, although little is known about the effects of this type of exercise according to obesity class. Objective: The aim of this study was to examine...

We investigate the effects of 12-week interval training of moderate- or high-intensity exercise on blood lipids and plasma levels of adiponectin. Thirty-four obese adolescent females [age = 15.9 ± 0.3 years; BMI and BMI-Z-score = 30.8 ± 1.6 kg/m(2) and 3 ± 0.3, respectively], were randomized to high-intensity interval training (HIIT, n = 11), moder...