You don't want to take NSAIDs post-workout. They inhibits protein-synthesis and the actual benefit of your exercise.
The DOMS is an indicator of muscle damage and/or inflammatory mechanisms.
Ibuprofen will remove DOMS by ruining your muscle's recovery processes.
Newer research has has subsequently cast doubt on the claims you mention, especially in older people.
http://www.t-nation....r_muscle_growthFollow-up human trials failed to replicate the initial human findings. Studies on both young and elderly subjects using selective and non-selective COX inhibitors alike showed no differences in protein synthesis (4, 11, 15).
If these findings aren't confusing enough, consider that several recent studies have investigated the long-term effects of NSAID administration on muscle growth in humans. None of these studies found a negative effect on muscle hypertrophy (8, 14, 20).
In fact, one of them showed that NSAIDs actually increased muscle hypertrophy by approximately 50% (20). You heard right, the group popping painkillers doubled their muscular gains!
4. Burd, NA, Dickinson, JM, Lemoine, JK, Carroll, CC, Sullivan, BE, Haus, JM, Jemiolo, B, Trappe, SW, Hughes, GM, Sanders, CE,Jr, and Trappe, TA. Effect of a cyclooxygenase-2 inhibitor on postexercise muscle protein synthesis in humans. Am. J. Physiol. Endocrinol. Metab. 298: E354-61, 2010.
8. Krentz, JR, Quest, B, Farthing, JP, Quest, DW, and Chilibeck, PD. The effects of ibuprofen on muscle hypertrophy, strength, and soreness during resistance training. Appl. Physiol. Nutr. Metab. 33: 470-475, 2008.
11. Mikkelsen, UR, Schjerling, P, Helmark, IC, Reitelseder, S, Holm, L, Skovgaard, D, Langberg, H, Kjaer, M, and Heinemeier, KM. Local NSAID infusion does not affect protein synthesis and gene expression in human muscle after eccentric exercise. Scand. J. Med. Sci. Sports 21: 630-644, 2011.
14. Petersen, SG, Beyer, N, Hansen, M, Holm, L, Aagaard, P, Mackey, AL, and Kjaer, M. Nonsteroidal anti-inflammatory drug or glucosamine reduced pain and improved muscle strength with resistance training in a randomized controlled trial of knee osteoarthritis patients. Arch. Phys. Med. Rehabil. 92: 1185-1193, 2011.
15. Petersen, SG, Miller, BF, Hansen, M, Kjaer, M, and Holm, L. Exercise and NSAIDs: effect on muscle protein synthesis in patients with knee osteoarthritis. Med. Sci. Sports Exerc. 43: 425-431, 2011.
20. Trappe, TA, Carroll, CC, Dickinson, JM, LeMoine, JK, Haus, JM, Sullivan, BE, Lee, JD, Jemiolo, B, Weinheimer, EM, and Hollon, CJ. Influence of acetaminophen and ibuprofen on skeletal muscle adaptations to resistance exercise in older adults. Am. J. Physiol. Regul. Integr. Comp. Physiol. 300: R655-62, 2011.
That page also has some negative studies regarding satellite cell inhibition by NSAIDs, but the significance of that is unclear since they did not measure actual hypertrophy results. In any case, the picture is not as simple as you stated.
If I had to make any claim, I would say that the effect can be either positive or negative depending on the person. NSAIDs certainly have the potential to help at least some people. Maybe a given 20 year old might not see benefit, but possibly a 40 year old who gets excessive DOMS might get significant benefit.
This idea that the body always knows just how much inflammation is optimal is not well supported - in fact many conditions in otherwise healthy people are caused by excessive inflammation, sometimes (as for example in the case of asthma, sepsis, etc.) to the point of killing the body. I am convinced that some people just get excessive DOMS for whatever reason. (Just one example could be low testosterone in older people, given that testosterone itself acts as an anti-inflammatory.)
Edited by viveutvivas, 17 February 2013 - 10:00 PM.