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Running shoe upper: how to choose the best one for your needs

Running shoe upper: how to choose the best one for your needs

A running shoe upper is the part of the shoe that covers your foot and it’s sewed or glued to the midsole. It typically includes materials like knit, mesh, fabrics or plastic, and also has features like laces, straps or protective elements. In this guide you will discover how to choose the perfect upper for your feet. The main problem here is that everyone’s feet are really different, yours too! Additionally, there are some external factors that need to be co[…]


Effects of temperature on running shoes

Effects of temperature on running shoes

Cold temperatures, especially the ones below freezing, harden up the foam, and demand more “work” from the shoe on every stride. Thus, softness and durability are compromised. We have tested in our lab more than 100 shoes following the same standard procedure for each one: 20 minutes in the freezer (0-degree Fahrenheit) and, after that, we measure the softness of the midsole to understand how the shoe performs under cold temperatures. In this article we will[…]


The State of Trail Running 2022

The State of Trail Running 2022

This report covers trail running race participation from 1984 to 2022. It includes 15.6 million race results from 116.947 races in 127 countries. It’s the most extensive report on trail running participation ever conducted. The report was done in collaboration with World Athletics. For journalists or academia: reach out to jens@runrepeat.com for questions, and feel free to use data, charts, and quotes from the report. For further reading, check out The State of Run[…]


Are new versions of running shoes even better?

Are new versions of running shoes even better?

Are new versions better or worse? Should you upgrade to the newest version which is typically more expensive? Let’s find out. The Reddit group r/RunningShoeGeeks helped come up with this idea. Check out their group if you’re geeky about shoes. The analysis is based on our database of about 2000 running shoes released in the last 7 years from 2015 to 2021. Limitations and disclaimer We don’t publish every single shoe on RunRepeat. Some are so rare that o[…]


NBA Team Values Analysis

NBA Team Values Analysis

In 2022, the value of NBA teams is $74.4 billion in total. Even though the Covid-19 outbreak affected the league by reducing the league's revenue by 19%, NBA teams' value increased by 11.7%. We analyzed present and historic data to present you 56 stats about NBA team values. NBA team values by year In 2022, the average NBA team value stands at $2.48 billion. Every team in the NBA is worth at least $1.5 billion, the first time in league history. 14 NBA teams are worth ove[…]


NBA salaries analysis (1991-2022)

NBA salaries analysis (1991-2022)

We spent 3 months collecting and analyzing 15,161 NBA salaries of 2,516 NBA players from 1990-91 to 2021-22 season. The research presents the most comprehensive analysis of salaries in the NBA league. Top NBA salary statistics The average salary in the NBA league is $7.90 million for the 2020-21 season and is projected to be $8.25 million in the 2021-22 season. The median NBA salary for the 2020-21 season is $3.83 million, rising to $4.02 million in 2022. Adjusted for 19[…]


Fewer Americans in MLS than ever before [Data analysis]

Fewer Americans in MLS than ever before [Data analysis]

We looked at the playing time of 3,222 players, from 129 different nationalities, who have played in MLS. The aim of our analysis was to identify how the playing time of US and international players has evolved in MLS as it has become a more established league. Key Findings The share of US playing time in MLS has: Decreased 43.58% since the first season of MLS Decreased 29.53% in the last decade. The share playing time has increased 156% since the first season of MLS for[…]


More female coaches than ever, long way still to go

More female coaches than ever, long way still to go

We analyzed the head coaches of women’s football teams between 2011 and 2021 to understand what opportunities are available for female head coaches and who really controls the women’s game. The report includes the teams that participated in the most recent season of the English FA WSL, Women’s Champions League, USA NWSL, German Frauen-Bundesliga, French Division 1 Feminine and Spanish Primera Division. It also included the top-25 ranked teams in The FIF[…]


Scientific Benefits of Exercise [Research Review]

Scientific Benefits of Exercise [Research Review]

In 2021, we began a project dedicating a significant amount of time towards researching the scientific benefits of exercise for your health. Reading, reviewing, analyzing, and reporting the findings of hundreds of studies showing how everything from regular physical activity to working out benefits you. Health benefits of exercise Exercise is the act of increasing your physical activity and exerting more effort than you normally would. It increases your heart rate and re[…]


70 Years of Height Evolution in the NBA [4,504 players analyzed]

70 Years of Height Evolution in the NBA [4,504 players analyzed]

“You can’t teach height” - Red Auerbach We spent 2 months analyzing 24,841 records of 4,504 NBA players during 69 NBA seasons in order to show how the game of basketball evolved through the evolution of players’ height. Special note to Kirk Goldsberry, whose book “Sprawlball” inspired the creation of this research. This article is a height spinoff of “Sprawlball”. Key findings: The average NBA player is 6'6.3'' tall and has[…]