How long does it take a top conditioned boxer to completely lose his fitness?

Or do boxers still maintain a level of their conditioning almost as part of their DNA?

I was thinking about Tyson Fury as an example. When he ballooned up to 400lbs was it easier for him to get in shape again due to the training he had done in the past than it would have been if he was 400lbs and had never trained intensely?

I remember him saying when he started training again that he was going to try an EIGHT MILE RUN after all he had been through with drug abuse and weight gain!!!

As it turned out, he wasn't able to complete the run and after half an hour, walked the rest.
That's still impressive.

There is no way most men who are ten stone overweight could commence training with a 30 minute jog without having a heart attack!

 

Thanks but that wasn't really what I was asking.

 

And after that he'd be pretty much back to the level of the average guy on the street?

 

Thanks for the response but I think it's a pretty specific question.
It was about how long it would take them to completely lose their conditioning rather than how long it would take for them to no longer be able to box a full 10 or 12 round fight.

 

Yes but that's not what I'm asking.

 

As for myself, I exercised tonight for the first time in a good while.

I have weights and an exercise bike in my flat. I much prefer weights to the exercise bike, I don't enjoy the exercise bike at all.

Earlier in the year, I used to go on the bike quite regularly. I'd go on it for 30 minutes with the resistance quite high and would have several flat out bursts within that 30 minute spell.

Tonight I went back on it and had to come off after FIVE MINUTES!! I wanted to give up after four minutes but I stuck it out.

I came off the bike wheezing and my chest felt like it was full of gravel.
I keep a record of the exercises I do and when I checked I found out that I had only done 14 minutes on the exercise bike since the start of April!!!!

But I suppose I benefitted more from those 5 minutes than from doing 30 minutes when I was in reasonably good shape earlier in the year.

 

I do. I have the bike in front of the TV and put a DVD on and use the timer to see how long I've been on for and know when it is time for a burst of speed.
I would always pedal quite fast even at my normal speed and I would do:

5.5 mins normal; 30 second burst; 6 mins normal; 30 second burst; 5 mins normal; 30 second burst; 5 mins normal; 2 mins burst; 3.5 mins normal and then a 1.5 min burst to bring it up to half an hour.

I have to have something to take my mind off the boredom and this is why I can't be bothered jogging, I've always hated it.
But even with the DVD, I had to come off after 5 minutes at normal speed, I was really struggling.

My chest still feels gravelly!

 

Am I right in thinking that the 5 minutes I did tonight after so long away from the bike will benefit me more than doing a 30 minute stint when I was on the bike regularly?

Or is that wishful thinking?