Assessing high-level archers: Ertan 2024 paper

A short paper, four pages in a supplement of a Russian journal, in which Hayri Ertan argues that the way muscles are activated separates high-level athletes from less experienced ones, and illustrates the point with two examples: the release in Olympic archery and the instep kick in football. It presents no new data.

For archery it draws on three earlier pieces of work. In a 2003 study Ertan himself had used electromyography to record the superficial finger flexor and the finger extensor in 10 elite archers, 10 beginners and 10 non-archers. In a second study, from 2005, he had built skill indices from the electromyographic signal and found a negative correlation with FITA score: the more experienced the archer, the lower the forearm muscle activity. From a 1987 paper by Nishizono he takes two observations: world-class archers activate the deltoid more than national-level archers, and in them back muscle contraction exceeds arm muscle contraction by more than in less experienced archers. The conclusion is that the best archers hold the draw more with the back and shoulder than with the forearm.

The method is that of a narrative review: the author read the literature on electromyography in sport and combined it with findings from the movement and motor control laboratory at Anadolu University. He gives no criteria for choosing studies and no database search; the examples are picked because they illustrate the starting idea.

For football he summarises a study of 14 professional and 17 amateur players, with electromyography of five muscles of the kicking leg: in the professionals the biceps femoris fired earlier and the rectus femoris less. For archery the measurements are those of the original papers, that is surface electrodes on the forearm and shoulder muscles, analysed before and after the clicker falls.

The review starts from a thesis and looks for examples that support it; it does not consider studies pointing another way, nor does it compare methods and samples. Two of the three archery papers cited are the author's own, and for the 2003 study the text gives the sample but not the results. The idea that actively contracting the extensors at release pushes the string sideways, costing points, comes from a coaching book (McKinney) rather than from a measurement: it remains a hypothesis. The claim that large back muscles delay fatigue likewise rests only on a reference to a chapter in a federation handbook, with no data in the text.

The dates do not match: the football study is cited in the text as 2014 and in the reference list as 2011. Finally, a correlation between forearm activity and score does not tell us whether lower activation makes for better shooting or whether experience produces both.

For archers the message is familiar and appears in many coaching books: in experienced archers the forearm of the drawing hand does less work, and the draw is held more by the shoulder and back. This paper summarises that view without adding evidence, and the link between releasing with active extensors and sideways movement of the string has yet to be measured. The data are in the original 2003 and 2005 studies, which have small samples but direct measurements.