The iphone application iphone measures your vertical jump and is the perfect tool to improve your jumping skills. Check out former Olympic long jumper Peter Häggström and the indoor world record holder and world champion in high jump, Kajsa Bergqvist as they are testing the application.
Try to jump as high as possible and bounce as quickly as you can and you will improve your jumping at the same time as your fast muscle fibres will have the best work out.
Good luck and have fun!
excellent
ereine78 1 year ago
OH it is Kajsa lol
Snauzer67 1 year ago