Metoprolol effects on running?

I had an absolutely awful run yesterday. It was outdoors, on roads near my office, in near-freezing weather. I absolutely could not get ‘going’ — I seemed to have no stamina. I took 36 minutes to run/walk/plod 5 kilometers. The route was fairly hilly and the first stretch is all uphill — but I don’t think that should have caused me quite so much distress.

And while I was glooming about it this morning to Carole, Carole pointed out that perhaps the beta blocker medication I started a couple of weeks ago (to combat high blood pressure) may have played a large role in what happened yesterday. I had some good runs at the gym last week, but I’d only been on the metoprolol a few days at that point. Now that it’s had more time to really get into my system, who knows? Maybe I’m going to have to work very hard to get warmed up before starting running from now on.

A quick Google search after Carole and I got home from running errands indicates that there’s something to the theory. People said “just because it’s harder doesn’t mean that you can’t run — people have run marathons on beta blockers.”

So I need to avoid despair — and just work really hard on getting warmed up before I launch into a run. I hope that makes the difference.