Even if Canelo used Clenbuterol only to burn fat and keep muscle, it's still a PED.
But evidence shows it also helps gaining some muscle.
https://www.ncbi.nlm.nih.gov/pubmed/3310657
https://www.ncbi.nlm.nih.gov/pubmed/1861634
Clenbuterol is not only used to burn fat, it's used to generate muscle mass as well. It has both effects.
But evidence shows it also helps gaining some muscle.
Clenbuterol, fed for 1 wk, increased the wet weight of the gastrocnemius, soleus, and extensor digitorum longus muscles (15-23%) in both normal and D + I ****. Although clenbuterol increased body weight gain, it did not alter feed consumption and, therefore, feed efficiency (g gain/g food) was improved. Activities of cathepsin B and N-acetyl-beta-glucosaminidase, but not cathepsin D, were elevated in the soleus muscles of clenbuterol-treated ****. The clenbuterol-induced increase in muscle growth in the insulin-replaced diabetic **** indicated that this beta-adrenergic agonist effect was not mediated by an alteration of circulating levels of insulin, secondary to beta-agonist action on pancreatic insulin release.
Clenbuterol treatment increased the weight of skeletal muscles 22% to 39% in 3-month-old ****, 19% to 35% in 12-month-old ****, and 22% to 25% in 23-month-old animals. Likewise, clenbuterol increased carcass protein content 19% in 3-month-old ****, 16% in 12-month-old ****, and 24% in 23-month-old animals. Conversely, the drug reduced carcass fat content 36% in 3-month-old ****, 32% in 12-month-old ****, and 38% in 23-month-old ****. Therefore, clenbuterol had similar anabolic and catabolic effects in all age groups. In addition, clenbuterol stimulated recovery of skeletal muscle protein lost following pump implantation in senescent ****.
Clenbuterol is not only used to burn fat, it's used to generate muscle mass as well. It has both effects.
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