https://socialsporthub.com/journal/topics/running Stories on running from SocialSportHub Journal. en https://socialsporthub.com/journal/a-rulebook-that-remembers-every-shoe https://socialsporthub.com/journal/a-rulebook-that-remembers-every-shoe The Athletic Shoe Regulations define an approved shoe in four clauses, and each clause names a different date. Read as a chronology rather than a definition, it is the record of a governing body absorbing a technology it did not anticipate. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/a-tenth-of-a-second-is-a-hypothesis https://socialsporthub.com/journal/a-tenth-of-a-second-is-a-hypothesis World Athletics treats a reaction time under 0.100 seconds as evidence that a sprinter moved before the gun. That threshold is a claim about human physiology, and a study on instrumented blocks found five of nine athletes averaging under it. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/the-countermovement-nobody-can-fully-explain https://socialsporthub.com/journal/the-countermovement-nobody-can-fully-explain Dip before you jump and you jump higher. The gap between a countermovement jump and a squat jump is treated as a readout of elastic energy — but a review of the mechanisms concludes elastic energy is a small contributor, and that a bigger gap may be the worse sign. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/the-finish-line-is-a-plane-and-a-torso https://socialsporthub.com/journal/the-finish-line-is-a-plane-and-a-torso World Athletics defines the finish as the instant a specific part of a specific body reaches a vertical plane. Producing that instant takes a camera aligned with the line, a thousand frames a second, and a test run before every session to prove the clock started when the gun did. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/the-javelin-that-was-redesigned-to-land https://socialsporthub.com/journal/the-javelin-that-was-redesigned-to-land In 1986 the men's implement was changed so that it would come down nose-first. The world record is the reason everyone cites; World Athletics' own account gives a different one — and the rule that made it work is not about the centre of gravity at all. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/the-shoe-rule-is-not-a-rule-about-springs https://socialsporthub.com/journal/the-shoe-rule-is-not-a-rule-about-springs World Athletics' shoe regulations are read as a limit on how much energy a sole may return. Read the document and the limits are on something else entirely: a thickness at two specified points, the topology of a rigid structure, and whether anyone can buy the shoe. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/two-metres-per-second-and-the-rounding-that-follows https://socialsporthub.com/journal/two-metres-per-second-and-the-rounding-that-follows A record stands or falls on a wind reading averaged over ten seconds at one point beside lane one. The rule that converts that reading into a number is not symmetrical, and the asymmetry always runs the same way. Sun, 06 Sep 2026 09:00:00 GMT https://socialsporthub.com/journal/the-quiet-engineering-of-a-running-track https://socialsporthub.com/journal/the-quiet-engineering-of-a-running-track A track is specified by how much force it swallows and how far it sinks, not by how well it grips. Both numbers have an upper bound as well as a lower one, and that is the whole design problem: a surface springy enough to give energy back is soft enough to waste it. Wed, 02 Sep 2026 09:00:00 GMT