Article (Scientific journals)
Month-of-Birth Effect on Muscle Mass and Strength in Community-Dwelling Older Women: The French EPIDOS Cohort.
Duval, Guillaume T; Schott, Anne-Marie; Sanchez Rodriguez, Maria Dolores Carmen et al.
2022In Nutrients, 14 (22), p. 4874
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Keywords :
month of birth; muscle; older adults; pregnancy; vitamin D; Dietary Proteins; Vitamin D; Vitamins; Humans; Female; Aged; Aged, 80 and over; Muscle Strength/physiology; Muscles; Independent Living; Muscle Strength; Food Science; Nutrition and Dietetics
Abstract :
[en] Background. Vitamin D is involved in muscle health and function. This relationship may start from the earliest stages of life during pregnancy when fetal vitamin D relies on maternal vitamin D stores and sun exposure. Our objective was to determine whether there was an effect of the month of birth (MoB) on muscle mass and strength in older adults. Methods. Data from 7598 community-dwelling women aged ≥ 70 years from the French multicentric EPIDOS cohort were used in this analysis. The quadricipital strength was defined as the mean value of 3 consecutive tests of the maximal isometric voluntary contraction strength of the dominant lower limb. The muscle mass was defined as the total appendicular skeletal muscle mass measured using dual energy X-ray absorptiometry scanner. The MoB was used as a periodic function in regressions models adjusted for potential confounders including age, year of birth, latitude of recruitment center, season of testing, body mass index, number of comorbidities, IADL score, regular physical activity, sun exposure at midday, dietary protein intake, dietary vitamin D intake, use vitamin D supplements, history and current use of corticosteroids. Results. A total of 7133 older women had a measure of muscle strength (mean age, 80.5 ± 3.8 years; mean strength, 162.3 ± 52.1 N). Data on total ASM were available from 1321 women recruited in Toulouse, France (mean, 14.86 ± 2.04 kg). Both the sine and cosine functions of MoB were associated with the mean quadricipital strength (respectively β = -2.1, p = 0.045 and β = -0.5, p = 0.025). The sine function of MoB was associated with total ASM (β = -0.2, p = 0.013), but not the cosine function (β = 0.1, p = 0.092). Both the highest value of average quadricipital strength (mean, 163.4 ± 20.2 N) and the highest value of total ASM (15.24 ± 1.27 kg) were found among participants born in August. Conclusions. Summer-early fall months of birth were associated with higher muscle mass and strength in community-dwelling older women.
Disciplines :
Geriatrics
Author, co-author :
Duval, Guillaume T ;  School of Medicine, Health Faculty, University of Angers, F-49100 Angers, France ; Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity, University Hospital, F-49000 Angers, France ; UNIV ANGERS, UPRES EA 4638, F-49045 Angers, France
Schott, Anne-Marie;  Department IMER (Information Médicale, Evaluation, Recherche), Lyon University Hospital, EA 4129, Institut National de la Santé et de la Recherche Médicale, University of Lyon, U831 Lyon, France
Sanchez Rodriguez, Maria Dolores Carmen  ;  Université de Liège - ULiège > Département des sciences de la santé publique > Santé publique, Epidémiologie et Economie de la santé
Herrmann, François R ;  Department of Rehabilitation and Geriatrics, Geneva University Hospitals, University of Geneva, CH-1226 Thônex, Switzerland
Annweiler, Cédric ;  School of Medicine, Health Faculty, University of Angers, F-49100 Angers, France ; Department of Geriatric Medicine and Memory Clinic, Research Center on Autonomy and Longevity, University Hospital, F-49000 Angers, France ; UNIV ANGERS, UPRES EA 4638, F-49045 Angers, France ; Gérontopôle Autonomie Longévité des Pays de la Loire, F-44200 Nantes, France ; Department of Medical Biophysics, Robarts Research Institute, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON N6A 5K8, Canada
Language :
English
Title :
Month-of-Birth Effect on Muscle Mass and Strength in Community-Dwelling Older Women: The French EPIDOS Cohort.
Publication date :
18 November 2022
Journal title :
Nutrients
ISSN :
2072-6643
Publisher :
MDPI, Switzerland
Volume :
14
Issue :
22
Pages :
4874
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
French Ministry of Social Affairs and Health
Funding text :
This work was supported by French Ministry of Health. The sponsor had no role in the design and conduct of the study, in the collection, management, analysis, and interpretation of the data, or in the preparation, review, or approval of the manuscript.
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since 29 May 2023

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