Russian bodybuilders have claimed to benefit from deer antler velvet by increasing muscle and nerve strength in the late 1960’s. Earlier studies found similar results in laboratory animals and athletes given pantocrin, an extract of deer antler velvet. Several studies show a positive correlation between consistent use of deer antler velvet and cardiovascular health. Human subjects who used deer antler velvet were able to endure larger work loads and experienced a shorter recovery time between exercises.
A systemic review on human interventions makes note of a study conducted on patients of osteoarthritis (Edelman et al. 2000; cannot be located online) which found improvements in joint pain symptoms relative to baseline in the Velvet Antler group and not placebo, although a lack of information on blinding and randomization precludes results that can be drawn from this study.