3415
Both groups underwent daily supplementation of either 3g CLA or 3g placebo for 30days , respectively , and performed exercise on a bicycle ergometer 3 times per week for 30 - 40min at 50 % VO2 peak workload .
 CLA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 CLA