Monday, August 10, 2009

Research Rant; Maryland Personal Trainer

One of my biggest pet peeves is when a study is claimed to "prove" something.

As a personal trainer and simply as someone who is involved in the fitness industry, every time there is a new health-related research headline in the news, I am the first one to hear about it. The conversation usually goes something like this:

Person: "Did you see the new study that proved vitamins ruin your workout?"

Me: The only thing that it proved was that you don't know what you are talking about.. It is possible that large amounts anti-oxidants could interfere with the natural inflammation process, but we would need to see a lot more research before jumping to any conclusions.

When looking at research, people like to read the introduction and the results while skipping over the methods, which is often the most important part. Just take the study above. Subjects took 1 gram of vitamin C daily. Who takes 1 gram of vitamin C a day anyway? Most multi-vitamins only weigh 1 gram as it is.


But I digress. The more important thing here is the fact that studies do NOT prove anything! Things really do not get "proved" at all, especially when it issues pertaining to the human body. The human body is just too complex for absolutes.

Researchers perform studies which become evidence, a piece of the puzzle if you will. The best a scientific hypothesis can hope for is that when once enough pieces of evidence (or studies) are stacked up, it will become generally accepted. Take creatine for example. It is generally accepted that creatine supplementation increases maximum power and strength. However, there's no "proof" that it does so because everything does not work for everyone in the same way and there are plenty of research studies which were unable to show that creatine had any effect on strength and power.

I think the media is mostly to blame for perpetuating this phenomenon. Popular news services love to say a study "proved" something, like when it was proven that puppies' behavior is dependent upon the alignment of planets.

Upset with the current alignment of planets, no doubt.

I am not trying to downplay the importance of research by any means. Sometimes single studies do make landmark discoveries. Take the Boeing Back Pain study for example, where a few thousand employees were analyzed to determine back pain risks. The researchers found that people who did not like their jobs were more likely to have back pain... a lot more likely. This study greatly advanced our understanding of chronic pain - popularizing the notion that chronic pain issues go beyond anatomical cause and effect and in the end the brain puts all the pieces together to decide what hurts and what does not. What this study did not do was "prove that people who hate their jobs will have back pain".

Conclusion

Always take studies with a grain of salt - make sure you know the whole story before jumping to any conclusions. At the end of the day, one study never proves anything - it takes a lot of work from a lot of researches to make definitive conclusions about health and performance!

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