Running Performance Variability: Comparison
Please note this is a comparison between Version 2 by Catherine Yang and Version 3 by Mabliny Thuany.

Sports performance is a multifactorial trait, expressed by the interaction of both individual and environmental characteristics. Taking this into account, it is of relevance consider the context where athletes are inserted to better understand variability in the performance, specially in practice mainly performed in outdoor environment, such as running.

  • running
  • variability
  • performance
  • multilevel approach

1. Introduction

Sports performance is a multifactorial trait, determined by different predictors related to both the subject and the environment [1]. According to ecological model theory, human development (or a given behaviour) is the result of the interaction of variables derived from different levels, organized in a hierarchical structure, comprising variables directly related to the subjects as well as those related to social, physical, and natural environments[2][3][4]. In this context, athletes have different life stories, train with different coaches, and live in given neighbourhoods, which are located in cities/states/countries with distinct sports policies, different natural environments, and designs[5]. All of these aspects act together to produce the different athletes’ profiles and performance[5][6].

At an international level, it

2. Running Performance Variability

Thas been proposed that a set of variables, such as individual- and training-related variables, economic, social, demographic, and climatic factors from the place where athletes live/train, as well as the so-called “macro-determinants” factors – human development index, per capita income, population size, population density, financial investments in sports, public policies for promotion of physical activity, and base sports – can be determinant for the sport development and to explain differences in se relationships can be illustrated when considering changes in runners’ performance of athletes from different nationalities[7][8][9]. Taking into accoworldwide dunt that road running is mainly performed in outdoor spaces, it means that beyond the biological, physiological, and biomechanical aspects, the natural and built environmental related factors can be of relevance to the engagement into the running training, leading to differenceing the last decades in the[7]. performance.

As the largest South American country, Brazil presents nearly continental dimensions and sociocultural contrasts[108], making such differences in runners’ performances notable. There is also discrepancy regarding the distribution of the best Brazilian runners across the states, with a high concentration of them in the Southeastern region[11]. This fact can be related to the existence of local sports policies that promote sport participation among its residents, thereby allowing the development of elite athletes[12][13]. Moreover, each state has different characteristics, such as population size and density; public policies, design, and infrastructure; demographic rates; human development index (HDI)[14]; and violence rates, street safety and security policies[15]; as well as specific geograpthic and weather characteristics[12][16]. So, it is possible to assu me that these particularities can act together to express and explain the differences observed in runners’ performance[17].

2. Running Performance Variability

In this sense, it was developed a nuscresearch project (https://intrackproject.wixsite.com/website) aiming to identify individual and environmental factors associated with road running performance. Using data from this project, the manuscript Running performance variability among runners from different Brazilian states: a multilevel approach”, published in International Journal of Environmental Research and Public Health (doi: 10.3390/ijerph18073781), rwe have ideport  ntified a relevant between- and within-state variance in running performance (figure 1), ranging from 252 to 360 s/km, as well as relevant within-state differences.

Figure 1. Running pace variance between Brazilian states, sorted by the median. Box-plot elements are as follow: cross, median; superior and inferior box limits, mean 75th and 25th percentiles, respectively; top and bottom bars, maximum and minimum normal values, respectively; circles indicate outliers.

In addition, it was alsoe have identified that state-level differences explained 3% of the total variance in Brazilian runners’ performance, with 54.4% of this variance being explained by running events, Human Development Index, and violence index. At the individual level, biological (sex, age, and BMI), socio-demographic (SES), and training (training frequency and volume/week) variables explained 56.4% of the 97% of the variance fraction associated with individual-level characteristics.

These results reinforce the significant role of the environment on the explanation of running performance variability; given the diversity across states, environmental variables should not be neglected, as they are relevant to the exploration of other variables possibly related to running performance.

References

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  15. Cerqueira, D.; Bueno, S.; Lima, R.S.; Neme, C.; Ferreira, H.; Alves, P.P.; Marques, D.; Reis, M.; Cypriano, O.; Sobral, I., et al. Atlas da violência. Availabe online: http://www.ipea.gov.br/atlasviolencia/arquivos/downloads/6537-atlas2019.pdf (accessed on 10 May 2020).
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