What was the last time you checked your imparity of your left-and right side throws?  If you are below 25-30%, you may have a chance to get injured in your strong side of your body!  The best throwers can achieve 40% results with their weak side in comapare to their strong side. 

An over 90m thrower should easily throw 50m plus with his strong hand. After a slight injury, Tom Petranoff were doing everything with his non-dominant hand to improve on the field (train your weak side to get better on your left side)! Then, as he improved his left side, he never got injured again!! On the top of that, he threw his world record of 99.72m. Each athlete should learns about how to train and develop core strength, body awareness, flexibility, weak side-strong side and center of gravity leverage.

Thomas Röhler, javelin throw Olympic Champion of Rio 2016, adapted drills from traditional rope walking moves  to improve the footwork of throws.

Röhler is using training techniques that are comonly used in sports where coordination is key (also in Circus production). He is channeling old school ideas about the need for throwers to develop and refine a general set of motor skills in practice for use later in competitive situations. He specializes practice in an effort to help him reach his fullest potential. We still remember as Andreas Thorkildsen got out of his athletic and workout comfort zones and tried new things (gymnastics).

All throwers should go out and find their own out-of-comfort zone practice rutine!

Learn about Constraint-Induced Movement Therapy

The case of the American football player left-handed Odell Beckham Jr. who did evrything to improve his weak side!

“One of the most effective ways that physical and occupational therapists have helped patients recover from strokes is to literally tie up their “good” limbs so they are forced to do as much as possible with their “weak” sides. This is called Constraint-Induced Movement Therapy, and it works. For many years this approach was not exactly mainstream but it has really taken off over the last ten or so years and the results are good. Both stroke patients and Beckham are tapping into the ability of the nervous system to make new connections and remodel even in adulthood. That adults have the ability to rewire their brains is one of the biggest new ideas in science since I started medical school in the early 1980s.” Michael J Joyner article

Neuromuscular activation patterns, which is the connection between the brain and the muscles and nerves. It is not about the strength of the non-dominant hand, exactly, but about “recruiting different muscle groups” with repetitive activities. Researchers at the University of Adelaide in Australia conducted a study for a paper published in 1999 where they made 10 people use their non-dominant hand more often each day for 10 weeks—and all eventually showed marked improvement in handwriting and other tasks in their non-dominant hand.

Beckham was forcing himself to become a lefty in the most mundane areas of his life in order for his left hand to catch up to his famous right.  His practice included brushing his teeth three times a day with his left hand and writing with his left instead of his right.  Other important switches included swinging a baseball bat (which he practiced around his house), shooting a basketball, and kicking balls lefty instead of righty. (Source)

In the above example the question may come “how a javelin thrower can adopt other practices to improve his/her throws?”