|Purple rice sushi could actually replace chicken + rice in the BB std.diet|
What they did was to provide their subjects, who were not allowed to drink, smoke or do any other exercise except from the prescribed protocol, with either 2x300mg γ-oryzanol or identically looking placebo capsules (There was no significant difference between the placebo and supplement groups with respect to age, weight, energy, carbohydrate, protein, and fat intakes).
According to Eslami et al. the use of gamma oryzanol, which is found in rice bran, wheat bran and certain fruits and vegetables "as a nutritional supplement for strength in athletes is prevalent" (Eslami. 2014), while the research to date has tended to focus on gamma oryzanol effects in patients, especially hyperlipidemics, rather than on resistance athletes.
If we take a look at the existing evidence there are studies by Bucci et al. who found that the intake of 30 mg ferulic acid per day (extracted from gamma oryzanol) for eight weeks resulted in increasing body weight and muscular strength in weight lifters, and a study by Fry et al. which reports strength increases in response to the ingestion of 500 mg/day gamma oryzanol supplementation in 40 year-old or older adults.
|Figure 1: Overview of exercise protocol (left); changes in 1RM on the bench and leg curl machine (Eslami. 2014)|
Visible, but not significant changes in body composition
In contrast to the significant changes in muscular strength, the inter-group differences with respect to the already small changes in the anthropometric measurements (see Figure 2) did not reach statistical significance.
|Figure 2: Changes in body composition (all non-significant inter-group differences; Eslami. 2014)|
- Boonsit, Panita, Dumnern Karladee, and P. Phongpiachan. "Gamma oryzanol content in purple rice Thailand local genotypes." Tropentag, October (2006): 11-13.
- Bucci, L. R., et al. "Effect of ferulate on strength and body composition of weightlifters." J Appl Sports Sci Res 4 (1990): 110.
- Eslami, Saghar, et al. "Effects of gamma oryzanol supplementation on anthropometric measurements & muscular strength in healthy males following chronic resistance training." Indian J Med Res 139 (2014): 857-863.
- Fry, A. C., et al. "The effects of gamma-oryzanol supplementation during resistance exercise training." International journal of sport nutrition 7.4 (1997): 318-329.
- Patel, M., and S. N. Naik. "Gamma-oryzanol from rice bran oil: a review." J. Sci. Ind. Res 63 (2004): 569-578.
- Tsushimoto, Gen, et al. "DNA-damaging, mutagenic, clastogenic and cell-cell communication inhibitory properties of gamma-oryzanol." The Journal of toxicological sciences 16.4 (1991): 191-202.