Reduced strength with ketosis?

I've been in ketosis for almost 5 months now. I work as a paramedic and have noticed that I don't seem to have as much power lifting people recently. Patients that would normally not have been a problem are difficult or have to be lifted in two stages. I'm 75% fat 20% protein and 5% carb. I feel great and my energy level is good I just don't seem to have any power. Nothing else has changed and I don't have any injuries. So what gives? Any insight or advice.