|I have to admit, I cannot answer the question about the effects of muscle damage on glycemia once and for all, but for the average workout, it's probably irrelevant and the overall effect beneficial.|
The reason that I write "probably", is that we do now have one study that suggests beneficial (Ho 2016) and one that found detrimental effects (Asp 1995) - and a couple of reasons why neither of the studies is fully convincing.
We will get to this issue and the "probably" in the bottom line. Before we do so, however, let's briefly take a closer look the study design. The purpose of the study was to determine the magnitude of muscle damage and blood glucose responses during an oral glucose tolerance test (OGTT) after eccentric training in healthy junior athletes (16.3 ± 0.5 years of age) with no history of musculoskeletal disorders who were instructed to perform ...
- 5 sets of barbell front squat for 20 repetitions at 30 pounds a day and
- 100-meter downhill sprinting consisted of 5 repetitions...
|Figure 1: Plasma levels of muscle creatine kinase (Ho 2016); as a SuppVersity reader you shouldn't be surprised to see "high-" and "low-responders" as discussed in a 2014 article on CK elevations w/ exercise.|
|Figure 2: Oral glucose tolerance test (OGTT), blood glucose levels and area under the curve - Pre: before exercise challenge; Post: ca. 24h after exercise challenge. *Significantly different against Pre, P < 0.05 (Ho 2016).|
- Asp, Sven, Jens R. Daugaard, and Erik A. Richter. "Eccentric exercise decreases glucose transporter GLUT4 protein in human skeletal muscle." The Journal of physiology 482.3 (1995): 705-712.
- Ho, Chien-Te, Machiko Otaka, and Chia-Hua Kuo. "Improving glucose tolerance by muscle-damaging exercise." Journal of Traditional and Complementary Medicine (2016).