Medicine and Health

Evaluating the seasonality of growth in infants using a mobile phone application

S. Narumi, T. Ohnuma, et al.

Discover the fascinating findings of a study that explored seasonal effects on infant growth velocity, revealing significant differences in length growth during summer, conducted by a team of researchers including Satoshi Narumi and Tetsu Ohnuma.

00:00

Playback language: English

Index

Abstract

This study investigated the seasonality of infant growth velocity (length and weight) using data from 9,409 Japanese infants whose parents used the "Papatto Ikuji" mobile phone application. Analysis of 20,007 length and 33,236 weight measurements revealed significant seasonal differences in length growth velocity (ALAZ/day), with increases during summer. Multilevel linear regression analysis, adjusting for age, sex, nutrition, and season of birth, showed a significant difference in ALAZ/day between winter and summer (mean difference 0.0026, 95% CI 0.0015 to 0.0036; *P* < 0.001), corresponding to 13% of the average linear growth velocity in 6-month-old infants. No significant seasonality was observed for weight gain. A modest effect of nutrition on linear growth was also found.

Publisher

npj Digital Medicine

Published On

Oct 21, 2020

Authors

Satoshi Narumi, Tetsu Ohnuma, Kenji Takehara, Naho Morisaki, Kevin Y. Urayama, Tomoyuki Hattori

Related Publications

Explore these studies to deepen your understanding of the subject.

Medicine and Health

Effects of stress on pain in females using a mobile health app in the Russia-Ukraine conflict

A. Kazlou, K. Bornukova, et al.

Social Work

Evaluating the effectiveness of the Kidogo model in empowering women and strengthening their capacities to engage in paid labor opportunities through the provision of quality childcare: a study protocol for an exploratory study in Nakuru County, Kenya

K. Okelo, M. Nampijja, et al.

Medicine and Health

Insights in the regulation of trimetylamine N-oxide production using a comparative biomimetic approach suggest a metabolic switch in hibernating bears

T. Ebert, J. Painer, et al.

Space Sciences

A core in a star-forming disc as evidence of inside-out growth in the early Universe

W. M. Baker, S. Tacchella, et al.

Listen, Learn & Level Up

Over 10,000 hours of research content in 25+ fields, available in 12+ languages.

No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.

listen to research audio papers with researchbunny