2022 年 52 巻 5 号 p. 151-159
Objectives: Increased plasma homocysteine levels are a risk factor for stress fractures and poor bone quality independent of changes in the bone mineral density. Homocysteine concentrations vary with dietary habits and exercise. This study investigated the changes in plasma homocysteine concentrations in female long-distance runners, who are expected to have large changes in plasma homocysteine concentrations due to diet and exercise.
Methods: Six female long-distance track and field athletes with high abilities were assessed under similar dietary conditions, with and without endurance exercise. After a restricted exercise period (Res) and an exercise period (Exe), during which transient endurance exercise was performed, blood samples were taken the following morning.
Results: Compared with Res, Exe was associated with increased plasma homocysteine concentrations (P ＜ 0.01). Significant differences were also obtained for each individual (P ＜ 0.01).
Conclusions: Endurance exercise increased the morning fasting plasma homocysteine concentrations the next day when the dietary conditions were matched.
