I have been running every third day for six months now. About a month ago I added a simple, full-body resistance training workout each day before running:
- BW Squats progression
- Inverted Row progression
- Push-Up progression
- Front Plank
- Bridge progression (only the easiest steps)
- Lying Leg Curl (in order to ensure a correct thighs/hamstrings strength ratio to avoid running injuries, see for instance here)
But I have spent nearly 24 h pretty scared since I pushed too much doing the Front Plank and I felt something weird in the lower abdomen the day before. Now, only 48 hours have past and it is gone, everything is normal and it seems clear it was merely DOMs, only I had never felt it in that part of my body.
Nevertheless the last 48 hours have made me wonder whether it is OK that I simply avoid exercises 4 and 5 and trust in the ability of pushups, inverted rows and squat progressions to gently strengthen my core. Bearing in mind that a front plank it is merely a push-ups position but hold for a while isometrically, it does not seem a wrong idea.
Do I need exercises 4 and 5 or can I forget about them? (I am not competing in any sport, I just want a safe and slow progression towards a general increase in strength and muscle mass).