Article
Geriatrics & Gerontology
Yosuke Yamada, Tsukasa Yoshida, Haruka Murakami, Yuko Gando, Ryoko Kawakami, Harumi Ohno, Kumpei Tanisawa, Kana Konishi, Julien Tripette, Emi Kondo, Takashi Nakagata, Hinako Nanri, Motohiko Miyachi
Summary: This study aimed to determine whether ratios of body cell mass/fat-free mass (BCM/FFM) and extracellular water/intracellular water (ECW/ICW) are predictors of maximal oxygen uptake (V??O(2)peak) independently of age, sex, and objectively measured physical activity (PA). The results showed that the BCM/FFM and ECW/ICW ratios are significant predictors of V??O(2)peak, independent of age, sex, FFM, leg power, and objectively measured PA.
JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES
(2023)
Article
Physiology
Marek Strzala, Kamil Sokolowski, Lukasz Wadrzyk, Robert Staszkiewicz, Lukasz Kryst, Magdalena Zeglen, Piotr Krezalek, Marcin Maciejczyk
Summary: This study aimed to assess the differences in biological age among 13-year-old swimmers and their ability to develop fast 60-second oxygen uptake kinetics and tethered swimming strength. The results showed that early-mature swimmers had higher oxygen uptake and pulling force, while late-mature swimmers had higher oxygen usage relative to body mass and force. There was a significant correlation between oxygen uptake, force, biological age, and swimming performance.
FRONTIERS IN PHYSIOLOGY
(2023)
Article
Physiology
Gen-Min Lin, Kun-Zhe Tsai, Xuemei Sui, Carl J. Lavie
Summary: This study examined the correlations between time and estimated power output (EPO) for a run field test and VO2 max obtained from cardiopulmonary exercise testing (CPET). The results showed that EPO had a stronger correlation with VO2 max compared to time.
FRONTIERS IN PHYSIOLOGY
(2023)
Article
Physiology
Ove Sollie, Thomas Losnegard
Summary: The purpose of this study was to investigate the anthropometrical and physiological determinants of laboratory and on-snow performance in competitive adolescent cross-country skiers. The results demonstrate that V?O-2 peak has a significant impact on overall skiing performance, while upper-body strength and BMI are more correlated to sprint performance. Laboratory performance is primarily influenced by physiological factors, while on-snow performance is affected by various factors.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Computer Science, Information Systems
Yuntian Liu, Jeph Herrin, Chenxi Huang, Rohan Khera, Lovedeep Singh Dhingra, Weilai Dong, Bobak J. Mortazavi, Harlan M. Krumholz, Yuan Lu
Summary: This study aims to improve nonexercise algorithms using machine learning methods and US national population surveys. The results show that the nonexercise algorithms using LightGBM have significantly improved accuracy in estimating cardiorespiratory fitness.
JOURNAL OF THE AMERICAN MEDICAL INFORMATICS ASSOCIATION
(2023)
Review
Cell Biology
Martin J. Gibala, Martin J. MacInnis
Summary: Brief, intense interval training improves V_O2max through various physiological changes, including increased maximal cardiac output and blood volume, as well as changes in capillary and mitochondrial density. However, the specific mechanisms underlying these improvements are still unclear and require further investigation using contemporary technologies.
AMERICAN JOURNAL OF PHYSIOLOGY-CELL PHYSIOLOGY
(2022)
Review
Sport Sciences
Max Niemeyer, Raphael Knaier, Ralph Beneke
Summary: Studies show that research methods and physiological factors play a crucial role in the occurrence of VO(2)pl (maximum oxygen uptake plateau). Many studies use inappropriate definitions or methodical approaches, leading to inaccurate detection of VO(2)pl. Additionally, there is still uncertainty regarding whether there are differences in VO(2)pl occurrence based on exercise mode, type, and testing method.
Article
Chemistry, Multidisciplinary
Marcin Maciejczyk, Tomasz Palka, Magdalena Wiecek, Jadwiga Szymura, Justyna Kusmierczyk, Marek Bawelski, Sebastian Masel, Zbigniew Szygula
Summary: The aim of this study was to evaluate the effects of interval training performed in hypoxia on aerobic capacity and second ventilatory threshold in young, untrained men. The results showed that compared to training in normoxia, interval training in hypoxia significantly improved maximum oxygen uptake and power output at the second ventilatory threshold.
APPLIED SCIENCES-BASEL
(2023)
Article
Sport Sciences
Anders Aandstad
Summary: The study established equations to convert 3,000 m run performance into predicted V?O-2max, with validity statistics provided. The correlation between V?O-2max and average 3,000 m run speed was shown to be high, making the 3,000 m test a time-effective alternative aerobic fitness test.
JOURNAL OF SPORTS SCIENCES
(2021)
Article
Sport Sciences
Jan Helgerud, Hakon Hov, Hakon Mehus, Bard Balto, Anders Boye, Lars Finsas, Jan Hoff, Eivind Wang
Summary: This study compared the effects of high-intensity interval training (HIIT) and sprint interval training (SIT) on maximal oxygen uptake (VO2max), anaerobic capacity, and endurance performance in women. The results showed that HIIT significantly increased VO2max in women, while SIT led to more training injuries. Both training protocols improved running performance in women.
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2023)
Article
Multidisciplinary Sciences
Lavinia Falcioni, Laura Guidetti, Carlo Baldari, Maria Chiara Gallotta, Marco Meucci
Summary: This study investigated the association between peak oxygen uptake and peak and submaximal OUES, as well as the agreement between submaximal OUES and peak OUES. The results showed a strong correlation between peak oxygen uptake and peak OUES, and a fair-to-very strong correlation between peak oxygen uptake and the two submaximal OUES. The level of agreement was higher between peak OUES and OUES up to the anaerobic threshold than between peak oxygen uptake and OUES up to the aerobic threshold.
Review
Environmental Sciences
Jing Hu, Zhen Wang, Bingkai Lei, Junping Li, Ruiyuan Wang
Summary: Combining the LCHF diet with HIIT can effectively reduce weight and fat, increase VO2max, and prevent muscle mass loss during LCHF, while fat mass and fat-free mass remain relatively unchanged. Further research may be necessary to clarify the effects of other types of exercise on body composition and physical performance during LCHF.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Sport Sciences
Oyvind Skattebo, Dafina Peci, Matthieu Clauss, Egil Ivar Johansen, Jorgen Jensen
Summary: This study compared the maximal fat oxidation rate (MFO) during one-legged (1L) and two-legged (2L) cycling and found that the mass-specific MFO was higher during 1L cycling. The increased mass-specific MFO during 1L cycling could be explained by improved perfusion and favorable conditions for oxygen delivery.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Sport Sciences
Oyvind Skattebo, Espen Spro Johansen, Carlo Capelli, Jostein Hallen
Summary: This study found that the deterioration of VO2max and maximal exercise capacity accelerates with the magnitude of acute blood loss, likely because rapid plasma volume restoration is sufficient to establish blood volume normality after a small but not after a moderate blood loss.
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
(2021)
Article
Physiology
Viktor Bielik, Leonard Lendvorsky, Matej Vajda, Peter Lopata, Pavel Ruzbarsky, Ivan Gustavo Masselli dos Reis, Leonardo Henrique Dalcheco Messias
Summary: This study aimed to compare the aerobic and muscle power of Junior/U23 paddlers from Slovakia who won medals in international championships with those who did not podium. The study found a significant effect of medals on bench press and bench pull mean maximal power, indicating the importance of absolute mean power on bench press for success in international championships. The incremental treadmill testing did not show differences between medalists and non-medalists, suggesting a need for more specific protocols for comparing aerobic power in canoeing competitions.
FRONTIERS IN PHYSIOLOGY
(2021)
Letter
Neurosciences
Sergej M. Ostojic
NUTRITIONAL NEUROSCIENCE
(2022)
Letter
Endocrinology & Metabolism
Sergej M. Ostojic, Valdemar Stajer, Laszlo Ratgeber, Jozsef Betlehem, Pongrac Acs
ANNALS OF NUTRITION AND METABOLISM
(2022)
Article
Food Science & Technology
Nikola Todorovic, Darinka Korovljev, Valdemar Stajer, Jagoda Jorga, Sergej M. Ostojic
Summary: According to this population-based study, there is no significant association between dietary creatine intake and liver disease manifestations. The study shows that consuming more creatine does not increase the risk of liver fibrosis, cirrhosis, or hepatic steatosis.
FOOD SCIENCE & NUTRITION
(2023)
Review
Food Science & Technology
Sergej M. Ostojic, Jagoda Jorga
Summary: Guanidinoacetic acid (GAA) has been used in human nutrition since the 1950s and is recommended for its role in creatine biosynthesis. It has demonstrated energy-boosting effects and may also have other metabolic roles, such as reducing blood glucose concentration, sparing amino acid arginine, modulating taste, and affecting methylation and fat deposition in various organs. Further research is needed to fully understand the overall role of GAA in human nutrition.
FOOD SCIENCE & NUTRITION
(2023)
Editorial Material
Food Science & Technology
Sergej M. Ostojic, Laszlo Ratgeber, Nenad Trunic, Sava Rajkovic
Summary: Guanidinoacetic acid (GAA) is a naturally occurring compound found in different foods and nutritional supplements. Supplemental GAA seems to be a major source of GAA, surpassing other food sources significantly. This technical paper summarizes GAA levels in different nutritional supplements based on the U.S. National Institutes of Health dietary supplement database.
FOOD SCIENCE & NUTRITION
(2023)
Review
Chemistry, Medicinal
Nikola Todorovic, Julen Fernandez-Landa, Asier Santibanez, Branislav Kura, Valdemar Stajer, Darinka Korovljev, Sergej M. Ostojic
Summary: Recent research has shown that hydrogen-rich water has beneficial effects on regulating blood lipid profiles. This systematic review and meta-analysis evaluated the effects of hydrogen-rich water consumption on blood lipid panel in clinical populations, and the results indicated that drinking this water can significantly improve lipid status.
Letter
Pediatrics
Sergej M. M. Ostojic
JOURNAL OF PEDIATRIC NEUROLOGY
(2023)
Article
Nutrition & Dietetics
Sergej M. Ostojic, Laszlo Ratgeber, Jozsef Betlehem, Pongrac Acs
Summary: Lifecourse nutrition examines the impact of diet on health outcomes throughout various stages of development and parenthood. This perspective emphasizes the need to consider both lifestyle behaviors and molecular interactions between nutrients and biochemical pathways when exploring the links between nutrition and reproductive health. The article summarizes evidence on the associations between periconceptional diet and next-generation health, and highlights the key metabolic networks involved during this critical time frame.
MATERNAL AND CHILD NUTRITION
(2023)
Article
Food Science & Technology
Sergej M. Ostojic, Elisabet R. Hillesund, Nina C. Overby, Froydis N. Vik, Anine C. Medin
Summary: Several dietary factors, including adherence to the Mediterranean diet and higher nut intake, have been found to positively affect circulating antiaging Klotho protein levels. This study analyzed the association between dietary intake of individual macro- and micronutrients and nonnutritive food components with circulating Klotho levels in a sample of 40- to 79-year-old US adults. Results showed that higher intake of carbohydrates, total sugars, dietary fibers, vitamin D, total folates, and copper were associated with higher Klotho concentrations.
FOOD SCIENCE & NUTRITION
(2023)
Article
Food Science & Technology
Sergej M. Ostojic, Erik Grasaas, Jelena Cvejic
Summary: This study examines the relationship between dietary creatine intake and cancer risk. The findings suggest that consuming a diet that includes more creatine may be associated with a reduced risk of cancer in U.S. adults.
JOURNAL OF FUNCTIONAL FOODS
(2023)
Review
Nutrition & Dietetics
Darren G. Candow, Konstantinos Prokopidis, Scott C. Forbes, Flavia Rusterholz, Bill I. Campbell, Sergej M. Ostojic
Summary: The combination of resistance exercise and creatine supplementation can lead to a slight reduction in body fat percentage but does not decrease absolute fat mass in adults under the age of 50.
Article
Food Science & Technology
Jelena Slankamenac, Marijana Ranisavljev, Nikola Todorovic, Jelena Ostojic, Valdemar Stajer, Sergej M. Ostojic
Summary: Dietary creatine supplementation may be an effective intervention strategy for reducing post-COVID-19 fatigue syndrome. It can increase tissue creatine levels, reduce fatigue, and improve multiple symptoms associated with the syndrome.
FOOD SCIENCE & NUTRITION
(2023)
Review
Biology
Narimen Yousfi, Morteza Jourkesh, Milos Milosevic, Karim Chamari
Summary: This review summarizes 17 studies exploring the effects of lunar cycles on sleep and physical activity. The findings are fragmented and inconclusive, with some studies reporting associations between full moon phase and poorer sleep quality while others finding no significant effect. Similarly, the impact of lunar cycles on physical activity shows conflicting results. To address methodological challenges, a standardized protocol using moon cycle variables is proposed.
BIOLOGICAL RHYTHM RESEARCH
(2023)
Article
Endocrinology & Metabolism
Marijana Ranisavljev, Nikola Todorovic, Jovana Panic, Bogdan Andjelic, Milan Vranes, Sergej M. Ostojic
Summary: The study investigated the effects of 24-hour fasting on serum levels of guanidinoacetic acid (GAA), creatine, and creatinine in non-vegetarian healthy adults. The results showed a significant decrease in serum GAA levels by 39.5% and an increase in creatinine levels by 14.7% during fasting, while the concentration of creatine remained unchanged. This suggests an increased demand for creatine production and potential kidney dysfunction during fasting.
HUMAN NUTRITION & METABOLISM
(2023)
Letter
Immunology
Aleksandra Milovancev, Jovana Avakumovic, Patrik Drid, Nikola Todorovic, Valdemar Stajer, Sergej M. Ostojic
EUROPEAN JOURNAL OF INFLAMMATION
(2022)