Wat betreft

Lower one dumbbell at a time behind head, press back to full extension. Lower weights to head by bending elbows. Challenges stabilization muscles. Rope shifts grip hitting triceps new ways. Supinated grip trains triceps through different, safer angles reducing strain. Supinated grip hits muscle uniquely. Band provides more resistance when fully extended.
The notion that acute elevations in anabolic hormones is relevant for muscle strength adaptation in recreational athletes cannot be supported by the present study. The present study, as well as most studies in the context of resistance exercise and endocrine responses, measures testosterone in serum or plasma. This is possibly due to the small discrepancy between the training protocols in the present study (same exercises and muscle engagement, with different loadings).
Another limitation is the lack of additional data points on hormonal response, such as pre- and post-training data. Given the results of similar 1-RM increase and the minor difference in hormonal change, we do not anticipate a greater increase in muscle size with ML compared to HL. While some reported greater 1-RM and CSA increase in the bicep bracchi for the group with added leg training before arm training (36), some methodological considerations question its conclusiveness as no Time×Group interaction was analyzed (35). Studies investigating the effect of exercise-induced elevations of endogenous hormones have reported equivocal effects on potentiating effects on muscle hypertrophy (2, 27, 36, 43).
To put that another way, low testosterone levels could be preventing you from seeing the progress in the gym you would be able to achieve if your body had a more optimum hormonal balance. In conclusion, the up-to-date data on the effect of exercise on serum testosterone concentrations in men have significant inter-individual and inter-study variability. Data on whether exercise induces prolonged testosterone stimulation is still limited, with the majority of studies showing similar resting serum testosterone concentrations in active and inactive individuals. Evidence suggests that acute increases in serum testosterone concentrations during exercise may likely optimize hypertrophic adaptations via enhancing the testosterone-androgen receptor .
No supplement can replace a consistent training program and a good diet. This means eating slightly more calories than your body burns each day. To gain muscle size, you need to be in a slight calorie surplus. This is when your muscles are most receptive to nutrients. Your diet provides the building blocks for new muscle tissue.