Incomplete: the training record is at zero sessions
senku. three-second.html
Three-second training

One 3-second contraction a day in a 2022 study, and a record here with nothing in it

The study is real, published in 2022 and cited at the bottom. It ran on a lab dynamometer nobody here has, so a home version is an adaptation, not the protocol, and inherits none of its numbers. The doing half here has not started.

STAGE, AT A GLANCE
HERE, SO FAR sessions performed 0 measurements taken 0 items republished 0 of those, in Russian 0 isokinetic dynamometer none nothing has been done yet, and this panel is the whole record THE STUDY, 2022 sessions, each trained person 20 seconds per session 3 each training group 13 people control group 10 people, no training muscle group tested elbow flexors done by other people, on a lab machine, and published
Top panel is this page's record: one person, nothing done. Bottom panel is the study's design. The missing machine is why none of its numbers transfer here.

Not medical advice. This page describes what a study did. It prescribes nothing, and claims no health outcome for anyone reading it.

01 / THE MOVE

What one session was, in the study

Sato et al. (2022), Niigata University of Health and Welfare, with Ken Nosaka of Edith Cowan University. One joint, one muscle group, three ways of loading it.

10 deg 100 deg 55 deg machine lever, arm strapped to it upper arm, fixed elbow the forearm worked against an isokinetic dynamometer turning about the elbow. It set the speed and measured the force. Not a free curl. ISOMETRIC 13 people, held at one angle: 55 deg CONCENTRIC 13 people, through 10 to 100 deg ECCENTRIC 13 people, through 10 to 100 deg CONTROL 10 people, no training
Angles, group names and group sizes are the study's. The lever, strap and axis are schematic: they show the arm attached to a machine rather than free, not the study's apparatus.
02 / THE STUDY'S SCHEDULE

What the study's four weeks were: three seconds a day, twenty times

One maximal voluntary contraction a day, five days a week, four weeks. Every session ran on an isokinetic dynamometer: the lab machine applies the load and measures the force.

ONE SESSION, IN THE STUDY 1 s 2 s 3 s the study: one maximal voluntary contraction, once a day THE STUDY'S FOUR WEEKS one row is a week 5 training days per week 4 weeks, 20 sessions per trained participant a filled cell is a training day in the study, an empty one is not here, so far: 0 of 20 THE MACHINE isokinetic dynamometer applies the load and measures the force 30 deg per second (moving groups) the isometric group was held still at 55 deg WHO, AND WHAT young sedentary people elbow flexors only
Every figure drawn here is a study parameter except the one marked "here", which is this page's own count. Sources are listed below.
03 / THE NUMBERS

Each one, and where it came from

Not one number on this page was measured by anyone here.

ValueWhat it isSource
3 sone maximal voluntary contractionSato 2022, design
20sessions per trained participantSato 2022, design
+10.2, +12.8, +12.2%eccentric group, on three separate measuresSato 2022, abstract
no changemuscle thickness, in every groupSato 2022, abstract
about +11.5%not in the paper. The press office's own summary. Never attribute it to the studyECU press release
Every figure on this page, with the source for each
ValueWhat it isSource
3 sone maximal voluntary contractionSato 2022, design
1 a day, 5 days a week, 4 weeksthe study's scheduleSato 2022, design
20sessions per trained participantSato 2022, design
55 degfixed angle, isometric groupSato 2022, design
10 to 100 degrange, concentric and eccentric groupsSato 2022, design
30 deg/sdynamometer speed, the two moving groups onlySato 2022, design
+10.2 ± 6.4%isometric MVC torque, eccentric group, three-angle average, p < 0.01Sato 2022, abstract
+12.8 ± 9.6%concentric MVC torque, eccentric group, two-velocity average, p < 0.01Sato 2022, abstract
+12.2 ± 7.8%eccentric MVC torque, eccentric group, p < 0.01Sato 2022, abstract
+6.3 ± 6.0%isometric MVC torque, concentric group, its only significant change, p < 0.05Sato 2022, abstract
+7.2 ± 4.4%eccentric MVC torque, isometric group, its only significant change, p < 0.05Sato 2022, abstract
no changethe control group, and muscle thickness in every group including the eccentric oneSato 2022, abstract
about +11.5%"overall muscle strength", eccentric group. This figure is NOT in the paper and must not be attributed to it; it is the university press office's own summary numberECU press release, secondhand
Who took part, what was read to write this, and what is here

Three training groups of 13, isometric, concentric and eccentric, plus a control group of 10 who did not train. The participants were young sedentary individuals, and the muscle tested was the elbow flexors.

What was read to write this page: the paper's abstract on PubMed, and the Edith Cowan University press release. The paper's full text is paywalled and was not read here, so its methods detail, its figures and the authors' own limitations section are unknown to this page. Which direction each moving group travelled is not drawn on this page either, because the abstract does not state it. The percentages marked "abstract" are quoted from the abstract; the 11.5% is the press release's number and appears nowhere in the paper.

What is here: one person, no sessions, no lab equipment. No session has been performed, no strength has been measured, no item has been republished in any language, and there is no isokinetic dynamometer.

04 / WHAT IS NOT CLAIMED

A home version is an adaptation, not the protocol

The machine set the speed, imposed the load and produced the measurement. Without it, a home version reproduces the movement only.

when the doing half starts, its record will hold only what actually happened here.

05 / SOURCES

Go to the originals

Nothing is copied from either: no frames, no transcript text, no figures.