LONDON – Reigning Olympic and world heptathlon champion Jessica Ennis-Hill has been ruled out of the indoor athletics season after she sustained an achilles tendon injury during training. Ennis-Hill did not put a time-scale on her return to action, but said she hoped to be able to enjoy a full outdoor season, starting at the Hypo Meeting in Gotzis in late May and building up to the Olympics in Rio. Asked if the injury put her participation in Rio in question, Ennis-Hill told Sky Sports News on Friday: "At this stage I'm hoping that's not the case. We're still in February, there's a lot of time before the Olympics. "I'll be going away and sitting with the medical team to go through everything. Hopefully it won't impact on my summer." Ennis-Hill won the world indoor pentathlon in Doha in 2010.