Collagen peptides also showed their most dramatic results in postmenopausal women
If the solution turns cloudy, develops visible particles, changes color, or develops an unusual odor, it has degraded and should be discarded
Figure 5 In order to determine if the phosphorylation of Ser42, Ser184, and Tyr198 was involved in the effect of GSTP on HMGB1, six GSTP mutants were constructed, including GSTP-S42A (a Ser42 non-phosphorylatable mutant), GSTP-S42D (a Ser42 constant-phosphomimetic mutant), GSTP-S184A (a Ser184 non-phosphorylatable mutant), GSTP-S184D (a Ser184 constant-phosphomimetic mutant), GSTP-Y198F (a Tyr198 non-phosphorylatable mutant), as well as GSTP-Y198D (a Tyr198 constant-phosphomimetic mutant) (Figure S4B in Supplementary Material)
It restricts the build-up of lactic acid, which is the main cause of fatigue and thus, helps in improving endurance & post-workout recovery process
Certainty ratings matter here, because they describe how much the conclusion might change as better studies arrive