Next Article in Journal
Blood Ammonia as a Possible Etiological Agent for Alzheimer’s Disease
Previous Article in Journal
Neurocognitive Disorders and Dehydration in Older Patients: Clinical Experience Supports the Hydromolecular Hypothesis of Dementia
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Nutrients 2018, 10(5), 563; https://doi.org/10.3390/nu10050563

Effects of Whey Protein Supplementation Pre- or Post-Resistance Training on Muscle Mass, Muscular Strength, and Functional Capacity in Pre-Conditioned Older Women: A Randomized Clinical Trial

1
Federal Institute of Science and Technology of Mato Grosso, Highway BR-364, Km 329, Cuiabá, Mato Grosso 78106-970, Brazil
2
Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Highway Celso Garcia Cid, Londrina, Paraná 86057-970, Brazil
3
Faculty of Physical Education, University of Campinas, Érico Veríssimo avenue, Campinas, São Paulo 13083-970, Brazil
4
Center for Research in Health Sciences, University of Northern Paraná, Paris Avenue, Londrina, Paraná 86041-140, Brazil
5
Department of Physical Education, Faculty of Physical Education and Sport, State University of Londrina, Londrina, Highway Celso Garcia Cid, Londrina, Paraná 86057-970, Brazil
6
Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, Cruz Quebrada, Dafundo 1499-002, Portugal
*
Author to whom correspondence should be addressed.
Received: 5 April 2018 / Revised: 26 April 2018 / Accepted: 1 May 2018 / Published: 3 May 2018
Full-Text   |   PDF [791 KB, uploaded 3 May 2018]   |  

Abstract

Aging is associated with sarcopenia and dynapenia, with both processes contributing to functional dependence and mortality in older adults. Resistance training (RT) and increased protein intake are strategies that may contribute to health improvements in older adults. Therefore, the aim was to investigate the effects of whey protein (WP) supplementation consumed either immediately pre- or post-RT on skeletal muscle mass (SMM), muscular strength, and functional capacity in pre-conditioned older women. Seventy older women participated in this investigation and were randomly assigned to one of three groups: whey protein pre-RT and placebo post-RT (WP-PLA, n = 24), placebo pre-RT and whey protein post-RT (PLA-WP, n = 23), and placebo pre- and post-RT (PLA-PLA, n = 23). Each group ingested 35 g of WP or PLA. The RT program was carried out over 12 weeks (three times per week; 3 × 8–12 repetition maximum). Body composition, muscular strength, functional capacity, and dietary intake were assessed pre- and post-intervention. Two-way analysis of covariance (ANCOVA) for repeated measures, with baseline scores as covariates were used for data analysis. A time vs. group interaction (p < 0.05) was observed with WP-PLA and PLA-WP presenting greater increases compared with PLA-PLA for SMM (WP-PLA = 3.4%; PLA-WP = 4.2%; PLA-PLA = 2.0%), strength (WP-PLA = 8.1%; PLA-WP = 8.3%; PLA-PLA = 7.0%), and the 10-m walk test (WP-PLA = −10.8%; PLA-WP = −11.8%; PLA-PLA = −4.3%). Whey protein supplementation was effective in promoting increases in SMM, muscular strength, and functional capacity in pre-conditioned older women, regardless of supplementation timing. This trial was registered at ClinicalTrials.gov: NCT03247192. View Full-Text
Keywords: aging; strength training; hypertrophy; protein timing aging; strength training; hypertrophy; protein timing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Nabuco, H.C.G.; Tomeleri, C.M.; Sugihara Junior, P.; Fernandes, R.R.; Cavalcante, E.F.; Antunes, M.; Ribeiro, A.S.; Teixeira, D.C.; Silva, A.M.; Sardinha, L.B.; Cyrino, E.S. Effects of Whey Protein Supplementation Pre- or Post-Resistance Training on Muscle Mass, Muscular Strength, and Functional Capacity in Pre-Conditioned Older Women: A Randomized Clinical Trial. Nutrients 2018, 10, 563.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nutrients EISSN 2072-6643 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top