The Drake Football Study

2020 ◽  
Author(s):  
Vincent Gouttebarge
Keyword(s):  
Soccer Players ◽  
Professional Football ◽  
Comprehensive Study

This Animated Video provides an overview of the protocol of the Drake Football Study, the most comprehensive study to-date to monitor the long-term health of professional football (soccer) players.

scholarly journals Comparison of Official and Friendly Matches through Acceleration, Deceleration and Metabolic Power Measures: A Full-Season Study in Professional Soccer Players

2021 ◽  
Vol 18 (11) ◽  
pp. 5980
Author(s):  
Hadi Nobari ◽  
Sara Mahmoudzadeh Khalili ◽  
Rafael Oliveira ◽  
Alfonso Castillo-Rodríguez ◽  
Jorge Pérez-Gómez ◽  
...  
Keyword(s):  
Effect Size ◽  
Total Duration ◽  
Soccer Players ◽  
Metabolic Power ◽  
Professional Soccer ◽  
Premier League ◽  
Small Effect Size ◽  
Moderate Effect Size ◽  
High Effort

Soccer is a popular team sport and highly demanding activity that requires high effort and long-term training plans. The goals of this study were to compare the accelerations, decelerations and metabolic power between official and friendly full matches, between the first and second halves of the matches, and between both halves of official and friendly matches. Twelve professional soccer players (age, 28.6 ± 2.7 years; height, 182.1 ± 8.6 cm; body mass, 75.3 ± 8.2 kg; BMI, 22.6 ± 0.7 kg/m2) participated in this study. A total of 33 official and 10 friendly matches were analyzed from the Iranian Premier League. All matches were monitored using GPSPORTS systems Pty Ltd. The following variables were selected: total duration of the matches, metabolic power, accelerations Zone1 (<2 m·s−2) (AccZ1), accelerations Zone2 (2 to 4 m·s−2) (AccZ2), accelerations Zone3 (>4 m·s−2) (AccZ3), decelerations Zone1 (<−2 m·s−2) (DecZ1), decelerations Zone2 (−2 to −4 m·s−2) (DecZ2) and decelerations Zone3 (>−4 m·s−2) (DecZ3). The major finding was shown in metabolic power, where higher values occurred in friendly matches (p < 0.05 with small effect size). Furthermore, total duration, AccZ3, DecZ1, DecZ2, and DecZ3 were revealed to be higher in official matches, while AccZ1 and AccZ2 were higher in friendly matches. The second half of the official matches revealed higher values for total duration compared to friendly matches (p < 0.05, moderate effect size). In conclusion, this study observed higher values of metabolic power in friendly matches compared to official matches. AccZ3, DecZ1, DecZ2, and DecZ3 were higher in official matches, while AccZ1 and AccZ2 were higher in friendly matches.

scholarly journals Using of tea-hybrid roses from the Nikita Botanical Gardens’ collection in the floriculture of the Southern Coast of the Crimea

2020 ◽  
pp. 65-77
Author(s):  
Z. K. Klimenko ◽  
S. A. Plugatar ◽  
V. K. Zykova ◽  
I. N. Kravchenko
Keyword(s):  
Optimal Timing ◽  
Southern Coast ◽  
Botanical Gardens ◽  
Biological Features ◽  
Different Types ◽  
Open Ground ◽  
The Crimea ◽  
Comprehensive Study

The article presents the results of a long-term research on the introduction study and evaluation of cultivars of tea-hybrid roses introduced and selected by the Nikitsky Botanical Gardens to determine the possibilities of their use in floriculture of the Southern Coast of the Crimea. The research was conducted in the period from 1955 to 2014. The material for the study was 679 cultivars of garden roses from the tea-hybrid garden group of the collection of the Nikitsky Botanical Gardens. As a result of a comprehensive study, 400 cultivars are recommended for use in the floriculture of the Crimea. The main options for this use becomes the growing of tea-hybrid roses in the open ground for gardening purposes in bush and tree-shaped forms, as well as the growing cultivars for cutting in both open and protected ground. The biological features of the cultivars, which determine the possibility of different types of the use and the cultivars, that have these features were identified: 400 cultivars were recommended for use in landscaping in bush form, 45 cultivars - also in tree-shaped form, 226 cultivars are promising for cutting in the open ground and 107 cultivars - for forcing and cutting in greenhouses. The main methods of propagation of cultivars of tea-hybrid roses under the conditions of the Southern Coast of the Crimea are budding and rooting of green and hardwood cuttings. The optimal timing for propagation by each of these methods is indicated. The best rootstocks for budding were identified, depending on the type of their use in floriculture. 

Effects of self-regulatory processes on cognitive representation of team-specific tactics in junior male soccer players

2019 ◽  
pp. 13-21
Author(s):  
Gabriela Andrade Vorraber Lawson ◽  
Gerson Américo Janczura ◽  
Heiko Lex
Keyword(s):  
Learning Strategies ◽  
Mental Representation ◽  
Soccer Players ◽  
Long Term Memory ◽  
Cognitive Representation ◽  
Term Memory ◽  
Regulatory Processes ◽  
Tactical Knowledge ◽  
Experimental Group

The present study aims to demonstrate the relationship between cognitive and behavioral variables that configure expert performance by testing if training in self-regulatory processes would affect the organization of tactics mental representation in soccer. A 2 × 2 mixed design was applied, manipulating the level of training in self-regulatory processes between groups and the moment of evaluation within groups. Participants were 13 under-15 year-old male soccer players from Montevideo, Uruguay, with an average of 9.38 years of competitive experience. The experimental group went through 10 individual weekly sessions of training in self-regulatory processes comprising 11 out of 18 self-regulatory processes presented in Zimerman’s Multiphasic Cycle of Self Regulatory Processes. Greater improvement on the cognitive representation of tactics was observed in the experimental group, which revealed more functionally organized clustering of offensive and defensive team-specific tactical concepts in long-term memory after the training. Results showed significant differences in the organization of tactical knowledge in long-term memory due to the participation in a training program on self-regulatory processes focusing on tactical actions in soccer. This study extended the effects of self-regulatory processes, previously evidenced in specific situations in other sports, to the organization of tactics mental representation in soccer. The effects are related to the facilitation of learning processes caused by the use of self-regulatory processes. The systematic application of learning strategies adapted to tactical situations seemed to enable participants to organize tactical knowledge in long-term memory.

Cognitive Ageing in Top-Level Female Soccer Players Compared to a Normative Sample from the General Population: A Cross-sectional Study

2020 ◽  
Vol 26 (7) ◽  
pp. 645-653
Author(s):  
Annika Prien ◽  
Carolin Besuden ◽  
Astrid Junge ◽  
Nina Feddermann-Demont ◽  
Peter Brugger ◽  
...  
Keyword(s):  
General Population ◽  
Soccer Players ◽  
Neurocognitive Performance ◽  
Normative Sample ◽  
Contact Sport ◽  
Cognitive Ageing ◽  
Study Population ◽  
Effect Of Age ◽  
Norm Sample

AbstractObjective:There is an ongoing debate on the potential negative effect of contact sport participation on long-term neurocognitive performance due to inherent exposure to concussive and subconcussive head impacts. The aim of the present study was to investigate whether cognitive ageing is exacerbated in elite soccer players compared to the general population.Method:Neurocognitive performance in 6 domains was compared between 240 elite soccer players and a normative sample from the general population (n = 585) using the computerised test battery CNS Vital Signs. We used two-way factorial ANOVA to analyse the interaction between age groups (15–19, 20–29, 30–39, 40–49 years) and study population (female soccer players vs. norm sample) in their effects on neurocognitive performance.Results:We found no significant interaction effect of age group and study population in five of six test domains. For processing speed, the effect of age was more pronounced in female soccer players (F = 16.89, p = .002). Further, there was a clear main effect of study population on neurocognitive performance with generally better scores in soccer players.Conclusions:Elite female soccer players generally performed better than the norm sample on tests of cognitive function, and further, cognitive ageing effects were similar in elite soccer players and controls in all but one domain. A lifespan approach may facilitate insightful future research regarding questions related to long-term neurocognitive health in contact sport athletes.

High Resolution Sequence Stratigraphy of Silurian Strata in Tazhong Area

2013 ◽  
Vol 734-737 ◽  
pp. 111-116
Author(s):  
Lei Zhang ◽  
Lun Wei Zhu ◽  
Xue Juan Zhang
Keyword(s):  
High Resolution ◽  
Sequence Stratigraphy ◽  
Third Order ◽  
Sequence Stratigraphic ◽  
Stratigraphic Framework ◽  
Tazhong Area ◽  
Sequence Boundaries ◽  
High Resolution Sequence Stratigraphy ◽  
Comprehensive Study

According to the fundamental principles of high resolution sequence stratigraphy, this paper focused on the application of high resolution sequence stratigraphy to Silurian strata in Tazhong area. Based on the comprehensive study of logging, drilling and seismic information, the high resolution sequence boundaries of Silurian strata and two scales of datum level cycles (long-term and intermediate-term) can be recognized in Tazhong area. Seven chronstratigraphic boundaries can be recognized in Silurian strata, including four sequence boundaries, which were the transformation from datum level falling to datum level rising, and three flooding surfaces, which the transformation from datum level rising to datum level falling. The Silurian strata in Tazhong area can be divided into three third-order sequences which correspond to three long-term datum level cycles, and 11 fourth-order sequences (parasequence sets) relating to 11 intermediate-term datum level cycles. The classification aforementioned can much better solved the corresponding problem between the six lithological sections of Silurian strata and sequence formations, finally establishes the high resolution sequence stratigraphic framework of Silurian strata in Tazhong area.

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