Assertion: raisin's acid | /r/HasProperty | ffa
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Source sentences:
text: Heart rate (HR), respiratory exchange ratio (RER), blood glucose, lactate, free fatty acids (FFA), glycerol, insulin, electrolytes and creatine kinase, GI symptoms and rating of perceived exertion (RPE) were recorded every 20 minutes during the sub-maximal exercise test and at the end of the 5K. We also measured whole body muscle soreness and fatigue and mood disturbance via questionnaires.