Effects of Vitamin D3 Supplementation and Resistance Training on 25-Hydroxyvitamin D Status and Functional Performance of Older Adults: A Randomized Placebo-Controlled Trial

Autor(en)

Rudolf Aschauer, Sandra Unterberger, Patrick A. Zöhrer, Agnes Draxler, Bernhard Franzke, Eva-Maria Strasser, Karl-Heinz Wagner, Barbara Wessner

Abstrakt

Vitamin D status is associated with muscle strength and performance in older adults. To examine the additive effects of vitamin D3 supplementation during resistance training, 100 seniors (65–85 years) participated in a 16-week intervention. Besides a daily dose of 400 mg of calcium, participants received either 800 IU vitamin D3 per day (VDD), 50,000 IU vitamin D3 per month (VDM) or nothing (CON). After the initial loading phase of four weeks, all groups started a 10-week resistance training program. Assessments of 25-hydroxyvitamin D (25(OH)D) status, muscle strength endurance (30-s chair stand and arm curl tests), aerobic capacity (6-min walk test) and functional mobility (gait speed and timed up and go test) were undertaken at baseline, after four weeks and at the end of the study. 25(OH)D status significantly improved in VDD and VDM, but not in CON (time x group: p = 0.021), as 15.2% of CON, 40.0% of VDD and 61.1% of VDM reached vitamin D sufficiency (>30 ng/mL; p = 0.004). Chair stand test, arm curl test, 6-min walk test, gait speed and timed up and go test improved over the whole intervention period (p < 0.05), however only chair stand and arm curl test were selectively affected by resistance training (p < 0.001). Neither muscle strength endurance, nor functional mobility or aerobic capacity were modulated by vitamin D supplementation. Therefore, the mere amelioration of 25(OH)D status of older adults does not lead to an additive effect on muscular performance during RT.

Organisation(en)

Forschungsplattform Active Ageing, Institut für Sport- und Bewegungswissenschaft, Department für Ernährungswissenschaften

Externe Organisation(en)

Sozialmedizinisches Zentrum Süd – Kaiser-Franz-Josef-Spital

Journal

Nutrients

Band

14

Seiten

1-14

Anzahl der Seiten

14

ISSN

2072-6643

DOI

https://doi.org/10.3390/nu14010086

Publikationsdatum

12-2021

Peer-reviewed

Ja

ÖFOS 2012

303028 Sportwissenschaft, 303009 Ernährungswissenschaften, 302020 Gerontologie

Schlagwörter

ASJC Scopus Sachgebiete

Food Science, Nutrition and Dietetics

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/effects-of-vitamin-d3-supplementation-and-resistance-training-on-25hydroxyvitamin-d-status-and-functional-performance-of-older-adults-a-randomized-placebocontrolled-trial(36b56094-0de0-499e-8fa1-da77f21352a7).html