Browsing by Author "Mainer-Pardos, Elena"
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- Comparison of GPS derived variables based on home versus away matches in the Asian professional soccer teamPublication . Nobari, Hadi; Fani, Maryam; Mainer-Pardos, Elena; Oliveira, RafaelProfessional soccer with high training loads is defined with weekly competition. The purpose of this study was to com pare external training load data of GPS derived variables that preceded a home versus away match. Twenty-two weeks of a national league meet schedule were analyzed, which included 11 home and 11 away matches. Twelve professional soccer players (age, 28.6 6 2.7 years; height, 182.1 6 8.6 cm; BMI, 22.6 6 0.7 kg/m2 ) participated in this study. All matches were monitored using GPSPORTS systems Pty Ltd. The following variables were selected: total duration of the matches and training sessions, high-speed running distance (18–23 km h21 ), sprint distance (. 23 km h21 ), maxi mal speed, body load, metabolic power, accelerations Zone1 (\ 2ms22 ) (AccZ1), accelerations Zone2 (2 –4 m s22 ) (AccZ2), accelerations Zone3 (. 4ms22 ) (AccZ3), decelerations Zone1 (\ 22ms22 ) (DecZ1), decelerations Zone2 (22 to 24ms22 ) (DecZ2) and decelerations Zone3 (. 24ms22 ) (DecZ3). The results indicated that meta bolic power showed higher values at home than away matches [p = 0.047, ES = 0.53, (20.28, 1.34)]. Furthermore, there was a higher value in accumulated external training load that preceded away matches for high-speed running and lower value [p \ 0.001, ES = 20.95 (21.79, 20.10)] for DecZ1 than home matches. In conclusion, external load variables had a higher value in home matches. However, the results showed that high-speed running was higher in away matches, which could be the discretion of the coaches to prepare players for different conditions on the oppo nent’s field.
- Effect of additional short sprint training on physical performance in adolescent male soccer players: a systematic review and meta-analysisPublication . Mainer-Pardos, Elena; Kamiş, Okan; Oliveira, Rafael; Nobari, HadiPurpose: The aim of this systematic review with meta-analysis (SRMA) was to evaluate the effects of additional short sprint training with different intervention training programs (i.e. plyometric training, strength training or multidirectional training) on linear sprint, change of direction speeds (CODS) and jump ability performance in young male soccer players. Methods: An electronic database search was performed, and 7 articles were included in the meta-analysis. Results: The players’ mean age ranged from 7.6 to 18.8 years. The duration of combined interventions was from three weeks to 10 months, with training frequency ranging from one to two sessions per week. In general, the results of the performance were associated with a large and significant reduction in the time of CODS (ES -1.60 (95% CI – 2.33, -.87), Z=4.32 (P< .001)]. Moreover, the effects on vertical jump height showed a non-significant and small improvement between pre and post-test on the vertical jump performance [ES .45 (95% CI – .14, .75), Z=2.90 (P= .004)], with an average heterogeneity of I2 = 0%. Conclusions: The current SRMA suggests that although additional short sprint training may produce improvements in certain aspects of performance, efficacy varies depending on individual and training-specific factors.
- Variations in accumulated-training load parameters and locomotor demand with consideration of puberty in elite young soccer playersPublication . Nobari, Hadi; shemshaki, Hamed Kia; Kamiş, Okan; Oliveira, Rafael; González, Pablo Prieto; Mainer-Pardos, ElenaThe study’s purposes were to examine the associations of training load parameters with locomotor demand and puberty status in elite young soccer players and to predict the percentage of changes in their performance ability with adjustments to the training load parameters, using multivariate regression analysis, while considering PHV and maturity offset. Seventeen male players (15–16 years old) participated in this study. Anthropometrics, body composition, maximal oxygen consumption (VO2max), and puberty status (for calculating PHV) and maturity offset were assessed. The results demonstrated substantial differences between the PHV, VO2max, and load parameters (acute and chronic workload (CWL)) over a soccer season. A substantial relationship existed between the workload parameters (VO2max, CWL, and training monotony (TM)) and maturity offset. All of the variables, except for training strain, demonstrated significant variances in relation to the differences between the first and second halves (p < 0.05). Aerobic performance can be estimated using the CWL, TM, and maturity offset values (R2 = 0.46). On the contrary, aerobic power performance can be explained using the acute:chronic workload, TM, and PHV values (R2 = 0.40). In conclusion, the biological maturity state of young soccer players has a substantial impact on their functional potential. Variations in accumulated load contribute significantly to aerobic resistance, whereas weight and height contribute significantly to sprint and vertical-jump performance, respectively.