Ivan Denisov Snatch, Helsinki, 12 - 13.7 (testing the logger)

For a while I've had the intention to log data from kettlebell movements to improve my technique. The spark to finish the job came when Ivan Denisov held a training camp in Helsinki in July 2014.

Ivan starting to record the next run.

The logger is in a cut pocket inside the kettlebell. The unit is a Race Technology DL1 mk1 with 2-axis accelerometer that goes up to 2 G. Without going into too much detail I can say that it's not suited for recording kettlebell movements. The analysis software depends on GPS data to be used, so you can not analyse the recordings using Race Technology software. Link to the new version of DL1 Link

Ivan recorded 3 sets of jerk and 4 sets of snatch. Unfortunately the jerk data can not be used because my equipment doesn't have a 3-axis G-sensor. Also the equipment is calibrated only to 2 G acceleration, so any value above it is not accurate. A 2 G acceleration sensor is not enough for kettlebell movements.

Ivan's explanation of the snatch on the training camp in Helsinki. The force F was recorded in snatch.

The force F represents with how much force you have to support the kettlebell in your hand. In short, less F means that the force of the kettlebell is lighter.

Units are shown as "G" which represents Gravity. The kettlebell was 24 kg, so you can think that 1 G represents 24 kg of  weight that you have to support. Unfortunately the logger was not calibrated, so it does not show real world values. The recording is very accurate, so the different techniques can be compared to each other. Sadly the analysis software limitations made it impossible to overlay the data, so two runs could be compared on top of each other.

Ivan did the snatch with different technique. Can't comment on that because I concentrated on the equipment and did not take notes or video. Should have also taken video.

Snatch set 1.

Snatch set 2.

Snatch set 3.

Snatch set 4.

The forces in set 4 are 3 times bigger than set 1-3.

The values in the above graphs are so much on a different level, so  sets 1-3 are a bit too small to interpret in the above pictures.

Below are sets 1-3 scaled bigger so you can compare them to each other.

Set 1 zoomed in.

Set 2 zoomed in.

Set 3 zoomed in.