"I was well set to win more tournaments but injuries didn't leave me the whole year. When you are fit and fine then progress comes automatically," Saina told PTI.
"Out of three important finals (All England, World Championship and China Open), I was the only runners up in three tournaments where as the winner in two (All England and World Championship) was Carolina and in third (China Open) the winner was Li Xuerui."
"Being world number one is the most satisfying while being runners up in three events in a year is not very encouraging to my personal career," she said.
"This year is also one of the best but more was to be done by me. I wish I would have been free of injuries. It is an important component of badminton. Almost all the girls in international badminton were doing well in the tournaments."
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"I had excellent training sessions at PPBA at Bangalore during 2015 under Vimal Sir. Physical fitness, personal skill and the best training contributes a lot to the outcome of a player," she said.
Saina had reached the finals of BWF Super Series Final in
2011, besides making the semifinals thrice. She will be once again up against the top 8 shuttlers in the world, including China's Li Xuerui and Spaniard Caroline Marin, at Dubai Super Series Masters Finals starting on December 9.
"It is always difficult to fight with the top players in badminton. I will give my best to show my performance."
The Indian has been laid low by an Achilles tendon injury ahead of the prestigious tournament but Saina said she is physically fit and will look to give her best.
"It will be very interesting to see the outcome. I am recovering well from injuries," said the World No. 2, who had to undergo a scan a fortnight ago to diagnose her Achilles tendon problems and was prescribed rest for a couple of weeks.
"It is true that every important event has a stress feeling on a player, but I will do my best to achieve the best in Rio Olympics," she signed off.