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Abstract

The aim of this study was to compare the effects of repeated sprints (RSA) training and regular soccer training on Yo-Yo IR-1 and RSA performance (6 × 40 m shuttle sprints). Thirteen semi-professional female soccer players and nine amateur male soccer players were randomised into a repeated sprint group (RSG; n = 12) or a regular soccer training group (STG; n = 10). The RSG soccer players executed 3-4 sets of 4-6 repeated sprints (30 m with 180° directional changes) weekly during the last eight weeks of the in-season. In parallel, the STG soccer players performed low- to moderate intensity soccer training in form of technical or tactical skills. The RSG showed 15% improvement in Yo-Yo IR-1 (p = 0.04; ES = 1.83) and their mean RSA times were reduced by 1.5% (p = 0.02; ES = 0.89). No significant changes were found for the STG (Yo-Yo IR-1, p = 0.13; RSA, p = 0.49). Comparing the groups, greater improvements were observed in Yo-Yo IR-1 for the RSG (p = 0.02; ES = 1.15), but not for the RSA (p = 0.23; ES = -0.33). Similar training volumes and intensities (% of HFmax) were observed between the groups (p = 0.22 and p = 0.79). In conclusion, a weekly RSA session integrated into a regular soccer regime improved in-season RSA and Yo-Yo IR-1 performance compared to regular soccer training.

winter, from January to March, during the time when the solar exposure in Poland is low and as previously described by Jastrzębska et al. (2016) . The subjects were divided into two groups: the experimental one that was supplemented with vitamin D (SG), and the placebo group (PG), not supplemented with vitamin D. All the players were subjected to the same soccer training described as High-Intensity Interval Training (HIIT) that involved endurance, speed and strength drills. Just before and after the experiment, blood samples for the vitamin D level estimation were

Comparison of Development of Physical Fitness Parameters in different Summer School Programs

The purpose of this study was to compare body composition and physical fitness development of children participating in soccer and different education programs. Nineteen adolescence children (age=12.8±0.3) participated in soccer training and eleven adolescence children (age=13.4±1) participated in multi-purpose physical education program for three weeks. Physical fitness tests were applied for determining the motor fitness, flexibility, agility, explosive power, general balance and endurance of children. Tests were applied before and after two educational programs and paired t-tests were applied between pre- and post-tests of the group. According to results, the weight of children who participated in the multi-purpose physical education program did not change significantly, whereas the weight of children in the soccer training program changed significantly (p<0.05). Standing-broad jump performance, 10 × 5 m speed shuttle run performance, flamingo balance test, abdominal sit-ups and medicine ball performance were significantly increased after two multi-purpose education programs (p<0.05). Furthermore, strength endurance of abdominal muscle group performance increased in only the soccer training group (p<0.05). In conclusion, both training programs had positive effects on performance. However, soccer training is more effective for development of strength and endurance of the abdominal muscle group, because soccer training is more specific for development of motor abilities.

References 1. Carli, G., Bonifazi M., Lodi L., Lupo G., Martelii G.& Viti A. (1986). Hormonal and metabolic effects following a football match. Int J Sporst Med , 7: 36-38. 2. Jastrzêbski, Z. (2004). Training burdens and their impact on sporting development of soccer players and handball payers . 3. Gdañsk: Wydawnictwo AWFiS. [in Polish] Krustrup, P., Christensen J.F., Randers M.B., Pedersen H., Sundstrup E., Jakobsen M.D. et al. (2010). Muscle adaptations and performance enhancements of soccer training for untrained men. Eur. J. Appl. Physiol. 108, 1247

soccer and periods of fixture congestion these maximal testing protocols may not be feasible for coaches to run due to tim constraints and increased levels of fatigue amongst players ( Halson, 2014 ). Given that standardised SSGs have shown a low CV for physical and physiological variables and that SSGs are a regular component within elite soccer training, the aim of the current investigation was to determine whether a 5 vs. 5 SSG protocol could be utilised as a surrogate of aerobic fitness within an elite soccer cohort. To determine it, we first sought to understand

aerobic fitness. J Sport Sci, 1988; 6: 93-101 Little T, Williams G. Suitability of soccer training drills for endurance training. J Strength Con Res, 2006; 20(2): 316-319 Little T, Williams G. Measures of exercise intensity during soccer training drills with professional soccer players. J Strength Con Res, 2007; 21(2): 367-371 Mallo J, Navarro E. Physical load imposed on soccer players during small-sided training games. J Sports Med Phys Fitness, 2008; 48(2): 166-171 Rampinini E, Impellizzeri FM, Castagna C, Abt G, Chamari K, Sassi A, Marcora SM. Factors influencing

References Aguiar M. Abrantes C. Maçãs V. Leite N. Sampaio J. Ibáñez, S. Effects of intermittent or continuous training on speed, jump and repeated-sprint ability in semi-professional soccer players. Open Sports Sci J. 2008, 1, 15-19. Allen JD. Butterfly R. Welsh MA. Wood R. The physical and physiological value of 5-a-sided soccer training to 11-a-side match play. J Hum Mov Studies. 2005, 34, 1-11. Aroso J. Rebelo AN. Gomes-Pereira J. Physiological impact of selected game-related exercises. J Sports Sci , 2004. 22, 522. Balsom P. Precision Football

-sided games in football]. Bratislava. Comenius University in Bratislava. Bachelor thesis. Faculty of Physical Education and Sports, Department of Sports Games. 4. BABIC, M. & M. HOLIENKA, 2018. Komparácia vnútorného zaťaženia brankárov vo futbale v tréningovom procese. [A comparison of the internal load in soccer training process of goalkeepers]. In: Studia Sportiva. 12 (2), pp. 202-211. ISSN 2570-8783. 5. BABIC, M., M. HOLIENKA & M. MIKULIČ, 2018. Internal load of soccer goalkeepers during the improvement of selected game activities. In: Journal of Physical Education and

Introduction Several studies on soccer training have investigated different types of games (i.e., small-, medium-, and large-sided games) to promote improvements in players’ and teams’ tactical performance ( Dellal et al., 2012 ; Owen et al., 2014 ). As a part of these studies, the use of GPS devices has improved external load monitoring by including important variables based on distance covered, speed, and acceleration ( Casamichana et al., 2013 ; Cummins et al., 2013 ). Some studies have found that the type of game being practiced, the player’s position, or

-sided games in football]. Bratislava. Comenius University in Bratislava. Bachelor thesis. Faculty of Physical Education and Sports, Department of Sports Games. 4. BABIC, M. & M. HOLIENKA, 2018. Komparácia vnútorného zaťaženia brankárov vo futbale v tréningovom procese. [A comparison of the internal load in soccer training process of goalkeepers]. In: Studia Sportiva. 12 (2), pp. 202-211. ISSN 2570-8783. 5. BABIC, M., M. HOLIENKA & M. MIKULIČ, 2018. Internal load of soccer goalkeepers during the improvement of selected game activities. In: Journal of Physical Education and