Before and after any exercises ensure to do stretching or warm up exercises. This will ensure that endurance training will not lead to serious injuries.
2. Strength and Quickness
Your main aim should be develop strength and quickness which will lead to explosive vertical leap
3. Building Your Muscles
It's also very important to develop your leg, thighs and calf muscles. For this take control over your nutrition. Have lots of protein which will help in developing your muscles and also prevent you from serious injuries. Be disciplined in your diet. However it's very important to have a professional trainer by your side to monitor your progress and to help you. This is because these exercises can lead to leg and ankle injuries.
4. Increase Your Speed.
Improve your speed. Sportsmen with better speed have the ability to jump higher. To improve your speed runs upstairs on your toes and walk down. Do this several times a day. It will also help in developing your leg, thigh and calf muscles. It's very useful to walk and run on your toes. It's very important to maximize your neurological responses.
5. Double Jump
Keep doing double jump exercises. Monitor the results on daily basis. Each day there should be an improvement over the previous day.
The above are simple tips on how to improve vertical jump and become airborne for your explosive vertical leap. Once you start getting results, develop a program for the same and follow the schedule with complete dedication, commitment and discipline to improve and increase your vertical leap.