Nagayama Chihiro, Kohda Kan, Hamada Yuka, Kamemoto Kayoko, Hiratsu Ayano, Tataka Yusei, Miyashita Masashi
Graduate School of Sport Sciences, Waseda University, Saitama, Japan.
Waseda Institute for Sport Sciences, Waseda University, Saitama, Japan.
J Exerc Sci Fit. 2021 Apr;19(2):111-118. doi: 10.1016/j.jesf.2020.12.002. Epub 2020 Dec 19.
This study examined the chronic effect of increased physical activity on postprandial triglycerides in older women.
Twenty-six women, aged 72 ± 5 years (mean ± SD), participated in this study. Participants in the physical activity group (n = 11) were asked to increase their activities above their usual lifestyle levels for 12 weeks. Participants in the control group (n = 15) maintained their usual lifestyle for 12 weeks. All participants rested and consumed a standardized breakfast after a 24-h period of physical activity avoidance at baseline, 4 weeks, and 12 weeks. Blood samples were collected in the fasted state (0 h) and at 2, 4, and 6 h after breakfast.
The average increased time spent in self-selected activities per day was 1.1 ± 19.3 min over the 12 weeks compared with the baseline in the physical activity group. There was no difference in the postprandial time-averaged triglyceride area under the curve at baseline (1.59 ± 0.81 vs. 1.39 ± 0.67 mmol/L, = 0.515) or over the 12-week intervention (1.78 ± 1.00 vs. 1.31 ± 0.67 mmol/L, = 0.212) between the physical activity and control groups.
Postprandial triglyceride concentrations were not reduced after performing self-selected activities under free-living conditions in older women when these responses were determined 24 h after the last physical activity bout. (Trial registration ID: UMIN000037420).
本研究探讨增加体力活动对老年女性餐后甘油三酯的长期影响。
26名年龄在72±5岁（均值±标准差）的女性参与了本研究。体力活动组（n = 11）的参与者被要求在12周内将其活动量增加至高于其通常的生活方式水平。对照组（n = 15）的参与者在12周内维持其通常的生活方式。在基线、4周和12周时，所有参与者在避免体力活动24小时后休息并食用标准化早餐。在空腹状态（0小时）以及早餐后2、4和6小时采集血样。
与基线相比，体力活动组在12周内每天自我选择活动的平均增加时间为1.1±19.3分钟。在基线时（1.59±0.81 vs. 1.39±0.67 mmol/L，P = 0.515）或12周干预期间（1.78±1.00 vs. 1.31±0.67 mmol/L，P = 0.212），体力活动组和对照组之间餐后甘油三酯曲线下面积的时间平均值无差异。
在老年女性自由生活条件下进行自我选择活动后，餐后甘油三酯浓度在最后一次体力活动 bout 后24小时测定时并未降低。（试验注册号：UMIN000037420）
