Associations among objectively measured physical activity, fasting plasma homocysteine concentration, and MTHFR C677T genotype - Murakami, H; Iemitsu, M; Sanada, K; Gando, Y; Ohmori, Y; Kawakami, R; Sasaki, S; Tabata, I; Miyachi, M (Eur J Appl Physiol, 2011)