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  • 1
    In: Research in Sports Medicine, Informa UK Limited, Vol. 27, No. 4 ( 2019-10-02), p. 452-466
    Type of Medium: Online Resource
    ISSN: 1543-8627 , 1543-8635
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2019
    detail.hit.zdb_id: 2126951-8
    SSG: 31
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  • 2
    In: Journal of Human Kinetics, Termedia Sp. z.o.o., Vol. 71, No. 1 ( 2020-01-31), p. 179-189
    Abstract: The aim of this study was twofold: i) to compare the rate of perceived exertion (RPE) and the frequencies of technical actions per minute in different small-sided games (SSGs) between under-14 and under-16 age groups, and ii) to compare the RPE and the frequencies of technical actions per minute between 1 x 1, 2 x 2, 3 x 3, 4 x 4 and 5 x 5 formats within age groups. Twenty young male basketball players from the same club (N = 10, from under-14; N = 10, from under-16) competing at the national level voluntarily participated in this study. Five different SSGs (1 x 1, 2 x 2, 3 x 3, 4 x 4 and 5 x 5) were played twice on courts of the same relative area and were compared in terms of the RPE and technical actions. The number of technical-tactical actions per minute, i.e. conquered balls (CB), received balls (RB), lost balls (LB), attacking balls/passes (AB), shots (S), rebounds (R), and the RPE were collected for each player for each SSG session. The results revealed that most of the differences between age groups were considered trivial/small and/or unclear for all SSG formats, though likely moderate differences between age groups were found in 1 x 1 and 2 x 2 SSGs, revealing that young players had greater frequencies of received, conquered, and lost balls. Within-age-group comparisons also showed moderate-to-large increases in technical actions during smaller formats than during larger ones. The main evidence of this study revealed that age group seemed not to largely influence the RPE or technical actions during different SSGs. However, smaller formats moderately-to-largely increased the number of technical actions. Interestingly, the biggest format (5 x 5) largely increased the RPE in comparison to the remaining formats. As a conclusion, technical actions and the RPE were influenced more by the format of play than by the age group.
    Type of Medium: Online Resource
    ISSN: 1899-7562
    Language: English
    Publisher: Termedia Sp. z.o.o.
    Publication Date: 2020
    detail.hit.zdb_id: 2503989-1
    SSG: 31
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  • 3
    In: Kinesiology, Faculty of Kinesiology, University of Zagreb, Vol. 53, No. 1 ( 2021), p. 28-36
    Abstract: This study compared athletes’ rate of perceived exertion (RPE) and the number of their technical-tactical actions in small-sided basketball games (SSG) played within the same relative area with adjusted bout durations in (a) varied game formats; and (b) in two successive bouts of different formats. Ten young female basketball players (14.3±1.3 years) played two bouts of five small-sided game (SSG) formats (1x1, 2x2, 3x3, 4x4, and 5x5). The number of technical-tactical actions per player per minute decreased from the smaller to the larger SSG format, and players’ RPE tended to be higher in larger compared to smaller formats. We concluded that the smaller basketball SSG formats increased players’ participation. In addition, adjustments of the relative playing area and bout duration seemed to decrease players’ effort. The use of two SSG bouts did impact the number of technical-tactical actions and RPE.
    Type of Medium: Online Resource
    ISSN: 1848-638X , 1331-1441
    Language: Unknown
    Publisher: Faculty of Kinesiology, University of Zagreb
    Publication Date: 2021
    detail.hit.zdb_id: 2262660-8
    SSG: 31
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  • 4
    In: International Journal of Environmental Research and Public Health, MDPI AG, Vol. 16, No. 13 ( 2019-07-05), p. 2386-
    Abstract: The aim of the present study was (a) to describe the anthropometric profile of a large group of soccer players based on different age groups and their playing positions on the field, and (b) to examine the variations of body composition among adult soccer players using diverse equations based on skinfold thickness. A total of 618 Greek soccer players who were grouped by age (i.e., 12–14, 14–16, 16–18, and 18–37 years) and playing position (i.e., goalkeeper, defender, midfielder, and forward) were evaluated for weight, height, and skinfolds. The Pařízková formula was used to estimate the percentage of body fat. Furthermore, for players who were 18 years or older the Reilly and Evans formulas was used to estimate the percentage of body fat. Independent of the age, in this large sample, goalkeepers presented higher values for weight, height and the percentage of body fat estimation as compared with other field positions. An anthropometric pattern was observed in each tactical position, namely, across a specific age of increasing maturation process (14–16 years). With the Pařízková formula, we found a mean (SD) range of variation in the percentage of body fat estimation between 4.87 ± 1.46 and 5.51 ± 1.46 as compared with the Evans formula. The same pattern of differences was found when the Reilly equation was considered. In conclusion, we observed a position specificity of anthropometric characteristics across different age categories. Additionally, the same data supported different validated equations which resulted in large differences in the final outcome estimations.
    Type of Medium: Online Resource
    ISSN: 1660-4601
    Language: English
    Publisher: MDPI AG
    Publication Date: 2019
    detail.hit.zdb_id: 2175195-X
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  • 5
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2022
    In:  BMC Pediatrics Vol. 22, No. 1 ( 2022-12)
    In: BMC Pediatrics, Springer Science and Business Media LLC, Vol. 22, No. 1 ( 2022-12)
    Abstract: This study aimed to analyze the reliability of the tests included in the motor competence assessment (MCA) battery and compare the effects of the number of trials per test. Thirty female volleyball players (14.6 ± 1.3 years of age) were tested. The participants performed two or three trials of each test. Intra-class correlation (ICC) was calculated, and a paired sample t-test analyzed the variations between trials (1st vs. 2nd vs. 3rd). Results revealed a significant difference between the first and the second trials for jumping sideways [t(29) = -4.108, p   〈  0.01], standing long jump [t(29) = -3.643, p   〈  0.01], and shuttle run [t(29) = -3.139, p   〈  0.01]. No significant result was registered in the shifting platforms, ball throwing and kicking between the first and second trials. Hence, any difference was recorded between the second and third trial. High ICC values were registered in lateral jumps, among the three repetitions of ball kicking and ball throwing, and between the last two repetitions of shuttle run. Almost perfect values were recorded for the shifting platforms and standing long jump. Nevertheless, there seems to be a learning effect between the first and the second repetition—no differences were registered only considering the two manipulative tests. In conclusion, except for jumping sideways, the MCA tests are reliable and only need to be performed two times instead of three.
    Type of Medium: Online Resource
    ISSN: 1471-2431
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2041342-7
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  • 6
    In: Physiology & Behavior, Elsevier BV, Vol. 224 ( 2020-10), p. 113030-
    Type of Medium: Online Resource
    ISSN: 0031-9384
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2020
    detail.hit.zdb_id: 2008755-X
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    SAGE Publications ; 2022
    In:  Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology
    In: Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, SAGE Publications
    Abstract: This study investigates the relationships between the internal and external load demands imposed on elite female volleyball players during training and matches. Fourteen elite female world champion volleyball league players participated in this study (mean ± standard deviation (SD); age, 22 ± 0.9 years; height, 195.1 ± 7.6 cm; body mass, 71.4 ± 6.3 kg). The research lasted for 10 months. Moderate positive relationships were found between match load and training load ( r = 0.48) and between high metabolic load distance (HMLD) in matches and HMLD in training ( r = 0.56). There were also strong positive relationships between local positioning system (LPS) recorded jumps in matches and during training (0.61), accelerations in matches and during training ( r = 0.72), and decelerations in matches and during training ( r = 0.68). A weak positive relationship was reported between training accelerations/decelerations and match accelerations/decelerations ( r = 0.28). The relationships between accelerations and decelerations in matches ( r = 0.92) and between accelerations and decelerations during training ( r = 0.90) were very strong. As a result, it is concluded that as the load, HMLD, jumps, accelerations, and decelerations values obtained during training increase, the values obtained in competitions also increase. The results of this study can help sports scientists and coaches understand the relationships between training and competition data obtained from electronic tracking devices.
    Type of Medium: Online Resource
    ISSN: 1754-3371 , 1754-338X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2433576-9
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  • 8
    In: Journal of Functional Morphology and Kinesiology, MDPI AG, Vol. 6, No. 2 ( 2021-06-17), p. 53-
    Abstract: The purpose of this study was to compare the external load, internal load, and technical efficacy between the first and the second matches (M1 and M2) occurring in congested fixtures (two matches in two days) using the number of sets as a moderating factor. An observational analytic research design was adopted. Data from official volleyball matches were collected during the first competitive period of the championship, comprising 14 competitive games within 10 weeks. Ten male elite volleyball athletes (age: 21.7 ± 4.19 years of age; experience: 6.2 ± 3.8 years; body mass: 85.7 ± 8.69 kg; height: 192.4 ± 6.25 cm; BMI: 23.1 ± 1.40 kg/m2) participated in this study. Players were monitored for external load (number of jumps and height of jumps) and internal load (using the rate of perceived exertion—RPE). Additionally, notational analysis collected information about attack efficacy and receptions made during matches. The mixed ANOVA revealed no significant interaction between time (M1 vs. M2) and number of sets for number of jumps per minute (p = 0.235; ηp2 = 0.114), mean jump height (p = 0.076; ηp2 = 0.193), RPE (p = 0.261; ηp2 = 0.106), attack efficacy (p = 0.346; ηp2 = 0.085), Positive reception (p = 0.980; ηp2 = 0.002) and Perfect reception (p = 0.762; ηp2 = 0.022). In conclusion, congested fixtures do not seem to affect the performance of volleyball players negatively.
    Type of Medium: Online Resource
    ISSN: 2411-5142
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2934583-2
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  • 9
    In: International Journal of Sports Science & Coaching, SAGE Publications
    Abstract: The aim of the present study was twofold: (i) to analyze the relationship between weekly variations in ACWR, training monotony (TM), training strain (TS), s-RPE and the number of jumps; and (ii) to explore the association between tests based on the external and internal training intensity (TI) measures across weeks. An observational cohort study was conducted. Ten female elite volleyball players (two setters, three middle-blockers, three outside hitters, and two opposites) of a first Division Portuguese team (24.1  ±  6.12 years old; 66.48  ±  6.85 kg; and 175.4  ±  6.52 cm) participated in this study. Players were monitored for external and internal TI measures. The correlation coefficients between internal and external TI measures were determined using Pearson's r. The results showed a moderate relationship between weekly variations of ACWR, TM, TS, s-RPE, and the number of jumps. Additionally, a moderate association between external and internal TI measures were detected. In conclusion, s-RPE seems to be a more sensible measure than the number of jumps, since its percentage of variation was higher.
    Type of Medium: Online Resource
    ISSN: 1747-9541 , 2048-397X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2237333-0
    SSG: 31
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  • 10
    Online Resource
    Online Resource
    Walter de Gruyter GmbH ; 2021
    In:  Biomedical Human Kinetics Vol. 13, No. 1 ( 2021-01-01), p. 63-72
    In: Biomedical Human Kinetics, Walter de Gruyter GmbH, Vol. 13, No. 1 ( 2021-01-01), p. 63-72
    Abstract: Study aim : To assess changes in physical fitness of amateur soccer players after a pre-season training period and baseline fitness dependencies. Material and methods : Twenty-one amateur soccer players were assessed during the pre-season. The following physical variables were assessed before and after a two-month pre-season training period: (i) cardiorespiratory fitness, (ii) strength and power, and (iii) change of direction (COD). Results : Significant decreases were found for countermovement jump (CMJ) (p 〈 0.001; d = 1.161), drop jump (DJ) (p = 0.014; d = 0.958), and horizontal jump (HJ) (p = 0.042; d = 0.640), while no significant changes were found for the overall variables from the beginning to the end of pre-season. Fit players revealed significant decreases for CMJ (p = 0.002; d = –2.495), DJ (p = 0.004; d = –1.760), HJ (p = 0.028; d = –1.005), COD deficit (p = 0.034; d = 1.013), and maximal aerobic speed (MAS) (p = 0.026; d = –4.053). No significant changes were found for unfit players. Conclusions : Amateur soccer coaches should consider assessing physical qualities at the beginning of pre-season and use the free-of-charge monitoring tools such as session-rate of perceived exertion (s-RPE) during the training process.
    Type of Medium: Online Resource
    ISSN: 2080-2234
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2021
    detail.hit.zdb_id: 2504081-9
    SSG: 31
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