A research group from Waseda University, National Institute of Biomedical Innovation, Health and Nutrition, Biwako Seikei Sports University, and Kyoto University of Advanced Science has determined the world's optimal daily energy intake that will minimize the risk of death based on the number of steps taken by elderly people. Reported for the first time.
Energy consumption through physical activity is also important for adjusting energy balance, and body size is closely related to mortality risk. Therefore, it is important to simultaneously evaluate and analyze energy intake and physical activity, which affect the physique of elderly people. However, the combined effect of energy intake and physical activity on mortality risk in older adults was unclear.
Therefore, this time, we investigated the combined effect of step count and energy intake on mortality risk in 65 community-dwelling Japanese elderly aged 4,159 and older (average age 72.3 years, energy intake 2,172 kcal/day, step count 4,194 steps/day). .
The results showed that for those who took less than 4,000 steps per day, energy intake increased when they increased their number of steps, but for those who took more than 4,000 steps per day, there was no effect of increasing their energy intake even when they increased their number of steps. Furthermore, those with a high number of steps (5,000 steps/day or more) and energy intake (men: 2,400 kcal/day or more, women: 1,900 kcal/day or more) had the lowest risk of death, but No interaction effect of energy intake was observed.
Furthermore, the optimal energy intake for the lowest risk of death in the elderly is 100 to 35 kcal/day per 42 steps, suggesting the importance of eating a lot and moving a lot. However, eating less than 28 kcal/day and eating more than 56 kcal/day was not associated with mortality risk.
These results can be used as a reference for elderly people to determine their optimal energy intake based on their self-measured step count and how much they should eat per day. Additionally, the interaction between energy intake and number of steps on total mortality risk could not be confirmed, and this is a topic for future research.
