I hadn't done any running since the onset of the pneumonia, only walking, so today the idea was to run/walk at a slow pace, equivalent to the pace of a 6-hour marathon, a ratio of one to three. That worked great, for about a mile and a half of the three-mile loop.
Then I began to feel a sharp pain in a muscle or tendon in the left hamstrings, about halfway down to the knee, toward the medial side, fairly deep within the muscle mass. It seems to be a small muscle or tendon, not a large one. The pain occurred during the walk portion of the run/walk, not the run portion, and seemed to be worst just as the extended left foot was about to touch down, before weight was applied.
So what caused it?
- Lawn mowing. A month or so ago I injured an adductor muscle or tendon in very much this same way. That injury occurred the day after some difficult lawn mowing on our very-sloped outlot. Guess what - I mowed that very same outlot yesterday.
- Levaquin. I'm still taking the last of the antibiotic that is supposed to cure a bacterial pneumonia, even though we don't really know if the pneumonia is bacterial. Unfortunately Levaquin has a reputation for damaging ligaments and tendons, especially the Achilles tendon, but others as well. In any case the cure is to stop the Levaquin. I have only one pill remaining, but I think I won't take it, judging that the risk of tendon injury now seems greater than the possible marginal benefit of one last treatment of the possible (but unlikely) bacterial pneumonia.
- Both 1. and 2. above.
Split: 2.24 mi, 28:25, pace 12:41, for the portion of the run up to and a little beyond the start of the pain. That's pretty good for a 1 to 3 run/walk, and on the grass trails to boot.
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