Adams quickly wrapped a flag around herself after winning gold and also held a sheet of A4 paper with instructions from her coach Jean-Pierre Egger, who competed for Switzerland in two Olympics.
On it was a picture of Egger competing in his prime with a speech bubble emanating from his mouth with the words: 'Dear Valerie, Go for gold, Ton Coach' and a handful of technical reminders for her to consider during competition.
The Olympic and now world champion for the third consecutive championships did not stamp her authority on the event early on as she usually does, despite an easy toss out to 20m during the warm up.
Her first attempt measured 19.37m, and after the first round Lijiao Gong of China led with 19.64m, one centimetre better than American Jillian Camarena-Williams.
Adams struck the harsh judging in the shot put at these championships with a slight foot foul in round two after sending the shot out over 20m.
Li Ling of China, coached by Adams' former coach Kirsten Hellier took the lead after round two with 19.71m.
With that determined masterly look Adams gets when things aren't going too well she seized the shot from the rack and went straight to the circle, putting it out to 20.04m in round three to take the lead.
Ostapchuk improved to 19.87m and Yevgeniya Kolodko of Russia moved into third with a personal best 19.78m.
Camarena-Williams fired in round four with 20.02m, Gong improved to 19.82m but Adams showed her superiority with a winning 20.72m, striding back out of the circle with a steely look of confidence.
Ostapchuk acknowledged Adams deserved to win.
"This year, I had to fight many injuries,'' she said. "I believed in a medal but, honestly, I did not expect it. I have many problems with my left knee which hurts me a lot.
"Valerie was very strong today and she was the clear favorite. I am happy for her.''
Adams now has the perfect platform and confidence to defend her Olympic title in London next year. It is the first title Adams has won since she split with Hellier and it shows she has refound the spark and energy that seemed to be missing for the past two years.
Adams is now only the second three-time winner in the event and the fifth woman to win three world titles and, at 26, still has plenty of time on her side.
- Additional reporting APNZ