Excerpt — Athlete's Guide to Sports Supplements

Most athletes, whether in training or competition, have been forced to perform in either hot and humid or cold conditions.

The battle for regulatory power is likely to be an ongoing one, but the hope for the future is a dietary supplement industry that provides more scientific, rather than testimonial-based, evidence for the claims being made, and more importantly, one that requires independent testing from a third party to ensure the purity and safety of the ingredients for consumers.

The supplement entries use the symbols listed in the following table to easily identify the supplements that have been proven to be beneficial or possibly beneficial for the corresponding performance variables.

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