The purpose of this study is to examine whether supplementation with SierraSil can improve anaerobic power and reduce muscle fatigue in a group of well-trained athletes.

A secondary purpose is to examine the effect of SierraSil on the severity of delayed onset muscle soreness.

This is a double blind, crossover, pilot study that will examine the effect of SierraSil supplementation on the determinants of human performance. Anaerobic capacity, muscle fatigue, the severity of delayed onset muscle soreness (DOMS) and markers of inflammation will be measured before and after 3 weeks of supplementation with SierraSil or placebo. There will be a 3 week washout period prior to the crossover to ensure SierraSil supplementation has no residual effect.

Inclusion Criteria:

• no contraindications to strenuous exercise

Exclusion Criteria:

• muscle or joint injury
• taking any form of anti-inflammatory or pain medication
• females due to the variability that might be introduced due to the phases of the menstrual cycle