The Bridge (NYC 2015)

timclarkAt the Races, NYC2015-2

The Queensboro Bridge at mile 15 (25K) is considered one of the toughest points of the course, and with no spectators allowed on the bridge, it’s also the quietest. Our elite runner – Ellie – slows her pace just slightly as she shifts to a more mid/fore-foot strike going up and over the bridge. We can see that in both her higher … Read More

The Start (NYC 2015)

timclarkAt the Races, NYC2015-1

Ellie was a seeded runner, meaning she got to start of in an early wave. The advantage is that she was able to get off the line quickly. Although it’s clear from the variance we see in both her Footstrike Type and her Contact Time that she was weaving her way through the crowd in the first 5K of the … Read More

Pronation or Supination?

timclarkMetrics

Q: Pronation or Supination – how to tell the difference with the data? – JxRx A: Pronation excursion (FS-MP) is the measure of how much roll the foot experiences between footstrike (FS) and the point of maximum pronation (MP). MP usually occurs before contact time is on average around 300ms. Similarly Pronation Excursion MP- Toe Off (TO) is the amount … Read More

Correlating pronation velocity and pronation excursion?

timclarkMetrics

Q: One correlation I have noticed that is pretty consistent across all of my runs is the correlation between pronation velocity and pronation excursion…Overall my RS numbers were pretty symmetrical b/w my right and left foot (which is something that I’ve been thinking about lately – whether or not it’s beneficial to strive for symmetrical biomechanics b/w my left and … Read More

Differences In Ground Contact Time Explain the Less Efficient Running Economy in North African Runners

timclarkLibrary

Research Paper The purpose of this study was to investigate the relationship between biomechanical variables and running economy in North African and European runners. Eight North African and 13 European male runners of the same athletic level ran 4-minute stages on a treadmill at varying set velocities. During the test, biomechanical variables such as ground contact time, swing time, stride … Read More

The Single Secret to Becoming a Better Runner

timclarkLibrary

A introduction to running efficiency and its importance in improving performance, with practical advice on how runners can evaluate and improve mechanics to impact efficiency. http://breakingmuscle.com/running/the-single-secret-to-becoming-a-better-runner

Anatomy for Runners

timclarkLibrary

Anatomy for Runners Running has become more and more popular in recent years, with thousands of people entering marathons, buying new running shoes with the latest technology, and going for a daily jog, whether on the track or on a treadmill. Unfortunately, with running comes injuries, as a result of wrong information and improper training. Author Jay Dicharry was tired … Read More