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Nutrients
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Dietary Supplements and Physical Activity
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Dietary Supplements and Physical Activity

A special issue of Nutrients (ISSN 2072-6643). This special issue belongs to the section "Sports Nutrition".

Deadline for manuscript submissions: closed (5 February 2025) | Viewed by 36866

Special Issue Editors

Dr. Javier Benítez-Porres

E-Mail Website1 Website2
Guest Editor
Physical Education and Sport, Faculty of Medicine, University of Málaga, 29016 Málaga, Spain
Interests: body composition; physical activity assessment
Special Issues, Collections and Topics in MDPI journals
Dr. Mora Murri

E-Mail Website
Guest Editor
1. Biomedical Research Institute of Malaga and Nanomedicine Platform (IBIMA Plataforma BIONAND), 29590 Málaga, Spain
2. Heart Area, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
3. Clinical Management Unit of Endocrinology and Nutrition, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
4. Biomedical Research Network Center for the Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
Interests: obesity; heart failure; mitochondria; exercise; sex dimorphism
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In an era marked by increasing health consciousness and an emphasis on holistic well-being, this Special Issue aims to provide a comprehensive platform for cutting-edge research and insights in this field. This Special Issue seeks to explore the dynamic relationship between dietary supplements and physical activity, delving into their individual and synergistic effects on human health and sport performance. We invite researchers to contribute original research articles and reviews that enhance our understanding of the multifaceted aspects of this subject.

Topics of interest include but are not limited to the effects of dietary supplements on exercise performance, the role of nutrition in optimizing physical activity outcomes, emerging trends in supplement use among athletes, and the impact of supplements on specific populations.

We encourage submissions that integrate interdisciplinary perspectives and present novel findings that can inform public policy and clinical practice. We welcome you to join us in this exploration of the intricate interplay between dietary supplements and physical activity and contribute to advancing the knowledge base in this important field.

Dr. Javier Benítez-Porres
Dr. Mora Murri
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nutrients is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • body composition
  • diet
  • ergogenic aids
  • exercise
  • metabolism
  • nutrition
  • personalized medicine
  • physical activity
  • supplements

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Published Papers (3 papers)

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Research

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20 pages, 1262 KiB  
Article
The Effect of Creatine Nitrate and Caffeine Individually or Combined on Exercise Performance and Cognitive Function: A Randomized, Crossover, Double-Blind, Placebo-Controlled Trial
by Gina Mabrey, Majid S. Koozehchian, Andrew T. Newton, Alireza Naderi, Scott C. Forbes and Monoem Haddad
Nutrients 2024, 16(6), 766; https://doi.org/10.3390/nu16060766 - 7 Mar 2024
Cited by 7 | Viewed by 25058
Abstract
This study examined the effect of creatine nitrate and caffeine alone and combined on exercise performance and cognitive function in resistance-trained athletes. In a double-blind, randomized crossover trial, twelve resistance-trained male athletes were supplemented with 7 days of creatine nitrate (5 g/day), caffeine [...] Read more.
This study examined the effect of creatine nitrate and caffeine alone and combined on exercise performance and cognitive function in resistance-trained athletes. In a double-blind, randomized crossover trial, twelve resistance-trained male athletes were supplemented with 7 days of creatine nitrate (5 g/day), caffeine (400 mg/day), and a combination of creatine nitrate and caffeine. The study involved twelve resistance-trained male athletes who initially provided a blood sample for comprehensive safety analysis, including tests for key enzymes and a lipid profile, and then performed standardized resistance exercises—bench and leg press at 70% 1RM—and a Wingate anaerobic power test. Cognitive function and cardiovascular responses were also examined forty-five minutes after supplementation. Creatine nitrate and caffeine that were co-ingested significantly enhanced cognitive function, as indicated by improved scores in the Stroop Word–Color Interference test (p = 0.04; effect size = 0.163). Co-ingestion was more effective than caffeine alone in enhancing cognitive performance. In contrast, no significant enhancements in exercise performance were observed. The co-ingestion of creatine nitrate and caffeine improved cognitive function, particularly in cognitive interference tasks, without altering short-term exercise performance. Furthermore, no adverse events were reported. Overall, the co-ingestion of creatine nitrate and caffeine appears to enhance cognition without any reported side effects for up to seven days. Full article
(This article belongs to the Special Issue Dietary Supplements and Physical Activity)
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14 pages, 1077 KiB  
Article
The Effect of Caffeine Supplementation on Female Volleyball Players’ Performance and Wellness during a Regular Training Week
by Jesús Siquier-Coll, Gabriel Delgado-García, Fulgencio Soto-Méndez, Antonio Liñán-González, Raquel García and Francisco Tomás González-Fernández
Nutrients 2024, 16(1), 29; https://doi.org/10.3390/nu16010029 - 21 Dec 2023
Cited by 5 | Viewed by 2454
Abstract
Background: caffeine is an ergogenic aid that still needs to be investigated in women’s sports performance. Methods: Eight semi-professional women’s volleyball players (height = 1.63 ± 0.08 m; weight = 66.67 ± 4.74 kg) voluntarily participated in this study. A randomized crossover design [...] Read more.
Background: caffeine is an ergogenic aid that still needs to be investigated in women’s sports performance. Methods: Eight semi-professional women’s volleyball players (height = 1.63 ± 0.08 m; weight = 66.67 ± 4.74 kg) voluntarily participated in this study. A randomized crossover design was implemented where players underwent caffeine and placebo conditions. In the caffeine condition, participants consumed 5 mg/kg of caffeine based on their body weight before acute training. The evaluations were performed over two weeks of training. In both conditions, the countermovement jump, repeated jumps for 15 s, and handgrip tests were performed. The change of direction was assessed using the 505 test. Well-being was also assessed with a wellness questionnaire. A repeated measures ANOVA and correlation analysis were performed. Results: The repeated measures ANOVA revealed a main effect of supplementation (F (1.7) = 8.41, p = 0.02, η2 = 0.54) across the training week on physical performance. Additionally, there was a positive effect on perceived fatigue (F (1.7) = 7.29, p = 0.03, η2 = 0.51). Conclusions: Caffeine improved performance and fatigue parameters over one week of training. Further research is needed on women, focusing on physical performance and wellbeing, especially during intense periods. Full article
(This article belongs to the Special Issue Dietary Supplements and Physical Activity)
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Review

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10 pages, 3040 KiB  
Review
Effects of the Ketogenic Diet on Strength Performance in Trained Men and Women: A Systematic Review and Meta-Analysis
by Salvador Vargas-Molina, Mora Murri, Andrés Gonzalez-Jimenez, José Luis Gómez-Urquiza and Javier Benítez-Porres
Nutrients 2024, 16(14), 2200; https://doi.org/10.3390/nu16142200 - 10 Jul 2024
Viewed by 8405
Abstract
Ketogenic diets (KDs) are an alternative to improve strength performance and body composition in resistance training participants. The objective of this review and meta-analysis is to verify whether a ketogenic diet produces an increase in the strength of resistance-trained participants. We have evaluated [...] Read more.
Ketogenic diets (KDs) are an alternative to improve strength performance and body composition in resistance training participants. The objective of this review and meta-analysis is to verify whether a ketogenic diet produces an increase in the strength of resistance-trained participants. We have evaluated the effect of the ketogenic diet in conjunction with resistance training on the strength levels in trained participants. Boolean algorithms from various databases (PubMed, Scopus, and Web of Science) were used. Meta-analyses were carried out, one on the 1-RM squat (SQ), with 106 trained participants or athletes, and another on the 1-RM on the bench press (BP), evaluating 119 participants. We did not find significant differences between the groups in the variables of SQ or BP, although the size of the effect was slightly higher in the ketogenic group. Conclusions: KDs do not appear to impair 1-RM performance; however, this test does not appear to be the most optimal tool for assessing hypertrophy-based strength session performance in resistance-trained participants. Full article
(This article belongs to the Special Issue Dietary Supplements and Physical Activity)
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