More 10,000 runners participated in the NN Egmond Half Marathon, which featured brutal Beaufort Force 6 winds during a 7-kilometer stretch of beach towards the city of Castricum. By running in a close pack, the elite athletes decided to waste as little power as possible by keeping each other

This paper is a direct result of a question from one of our readers, namely JanWillem Nieboer. He is an enthusiastic user of the Stryd and asked us how he could calculate his race time from the Target Power as defined by Stryd? We studied this in detail and derived

In previous articles we have already discussed the spectacular developments in recent years in the quest of running the marathon sub 2 hours. As you will know, Eliud Kipchoge finally succeeded with his phenomenal 1:59:40 in Vienna, a fantastic performance that is rightly viewed by all marathon runners

There is a worldwide hunt in the search for options to optimize running performance through reducing the air-resistance among runners, coaches and running scientists. Cyclists and speed-skaters have been doing this for a long time already by developing optimal aerodynamic conditions (clothing, frames, body position, streamlining, drafting). In running, there

There is a worldwide hunt in the search for options to optimize running performance through reducing the air-resistance among runners, coaches and running scientists. Cyclists and speed-skaters have been doing this for a long time already by developing optimal aerodynamic conditions (clothing, frames, body position, streamlining, drafting). In running, there

There is a worldwide hunt in the search for options to optimize running performance through reducing the air-resistance among runners, coaches and running scientists. Cyclists and speed-skaters have been doing this for a long time already by developing optimal aerodynamic conditions (clothing, frames, body position, streamlining, drafting). In running, there

In the summer of 2019, the new Stryd was launched. This new Stryd has been improved on many points. The most striking improvement is the "wind port". This is a small hole in the bottom - between the charging contacts - so that the Stryd can also include

In our book (www.thesecretofrunning.com [https://blog.stryd.com/p/d3c5e5bd-b5f8-416c-a5c1-d619d526384a/www.thesecretofrunning.com] ) we have discussed the Energy Cost of Running (ECOR) in several separate chapters. First, we have shown that on a level and hard course, the ECOR is typically 0.98 kJ/kg/km. Of course,

Earlier, we have analyzed the Stryd power data during the 7Hills race ( https://blog.stryd.com/2019/12/17/an-in-depth-analysis-of-a-15k-race-seven-hills-run/ [https://blog.stryd.com/2019/12/17/an-in-depth-analysis-of-a-15k-race-seven-hills-run/]) and the Dutch Indoor Master Championships 3000 meter race ( https://blog.stryd.com/2019/12/17/impact-of-illness-and-injury-on-critical-power/ [https://blog.stryd.com/2019/

In our book (www.thesecretofrunning.com [https://blog.stryd.com/p/65a6baea-0264-40b0-8a09-1ee1692f6d07/www.thesecretofrunning.com] ) we have discussed the Energy Cost of Running (ECOR) in several separate chapters. First, we have shown that on a level and hard course, the ECOR is typically 0.98 kJ/kg/km. Of course,

Some 2,5 month ago Hans ran the 15 km 7HillsRun in 59:34 and with an average power of 244 Watt (or 4,21 Watt/kg, which is actually a better parameter). We analyzed the results in a paper (see https://blog.stryd.com/2019/12/17/an-in-depth-analysis-of-a-15k-race-seven-hills-run/ [https:

The performance lab of a Sports Medical Center offers various tests. In this paper we elaborate the testing of the aerobic system of a runner on a treadmill. To test the aerobic system the load is step-by-step increased by increasing the speed of the treadmill. Such a test goes beyond

The Seven Hills Run is an annual 15 km road running race held in Nijmegen, the Netherlands (https://en.wikipedia.org/wiki/Zevenheuvelenloop). It has grown into one of the largest road races in the Netherlands with 40,000 participants. In the 2010 edition, Leonard Komon improved the official 15

The Seven Hills Run is an annual 15 km road running race held in Nijmegen, the Netherlands (https://en.wikipedia.org/wiki/Zevenheuvelenloop). It has grown into one of the largest road races in the Netherlands with 40,000 participants. In the 2010 edition, Leonard Komon improved the official 15

In our book (www.thesecretofrunning.com [https://blog.stryd.com/p/f03acb38-92ed-4708-a251-e852c132ccd4/www.thesecretofrunning.com] ) we have discussed the Energy Cost of Running (ECOR) in several separate chapters. First, we have shown that on a level and hard course, the ECOR is typically 0.98 kJ/kg/km. Of course,

In our book (www.thesecretofrunning.com [https://blog.stryd.com/2019/12/06/the-physiological-differences-between-trained-and-untrained-runners/www.thesecretofrunning.com] ) we have described our initial treadmill research on 14 test runners in the physiological laboratory of the Dutch Sports Medical Center SMA Midden Nederland. We were quite impressed by the results which showed

In our book (www.thesecretofrunning.com [https://blog.stryd.com/2019/12/06/the-physiological-differences-between-trained-and-untrained-runners/www.thesecretofrunning.com] ) we have described our initial treadmill research on 14 test runners in the physiological laboratory of the Dutch Sports Medical Center SMA Midden Nederland. We were quite impressed by the results which showed

In our book (www.thesecretofrunning.com [https://blog.stryd.com/2019/12/06/the-physiological-differences-between-trained-and-untrained-runners/www.thesecretofrunning.com] ) we have described our initial treadmill research on 14 test runners in the physiological laboratory of the Dutch Sports Medical Center SMA Midden Nederland. We were quite impressed by the results which showed

In our book (www.thesecretofrunning.com [https://blog.stryd.com/2019/12/06/the-physiological-differences-between-trained-and-untrained-runners/www.thesecretofrunning.com] ) we have described our initial treadmill research on 14 test runners in the physiological laboratory of the Dutch Sports Medical Center SMA Midden Nederland. We were quite impressed by the results which showed