keyword
https://read.qxmd.com/read/38406182/effects-of-ramadan-intermittent-fasting-on-performance-physiological-responses-and-bioenergetic-pathway-contributions-during-repeated-sprint-exercise
#1
JOURNAL ARTICLE
Serhat Özbay, Süleyman Ulupınar, Cebrail Gençoğlu, Ibrahim Ouergui, Furkan Öget, Hasan Hüseyin Yılmaz, Necip Fazıl Kishalı, Fatih Kıyıcı, Selim Asan, İzzet Uçan, Luca Paolo Ardigò
INTRODUCTION: This investigation aims to elucidate the impact of Ramadan intermittent fasting on performance, physiological responses, and bioenergetic pathway contributions during repeated sprints. METHODS: Fourteen active male Muslim athletes (age = 22.4 ± 1.8 years, body weight = 69.5 ± 3.8 kg, height = 176 ± 5.1 cm) executed a repeated sprint protocol, consisting of ten 20-meter sprints with 15-s passive recovery intervals, during both fasting and non-fasting conditions...
2024: Frontiers in Nutrition
https://read.qxmd.com/read/38340262/alactic-base-excess-abe-a-novel-internal-milieu-parameter-its-concept-and-clinical-importance
#2
REVIEW
Md Hoque, Jason Nagourney, Thomas Pawlowski, Joaquin Cantos, Gustavo Aroca-Martinez, Ivan Huespe, Carlos G Musso
Inspired by the Stewart-Figge acid-base approach, Gattinoni et al. recently introduced a new internal milieu parameter known as alactic base excess (ABE). The authors defined ABE as the sum of lactate and standard base excess. In the context of sepsis, ABE has been proposed as a valuable marker to discern between metabolic acidosis resulting from the accumulation of lactate and the retention of fixed acids, which can occur in cases of renal failure. Multiple studies have demonstrated that a negative ABE value (<-3 mmol/L) represents an early marker of renal dysfunction, and significantly correlates with higher mortality rates in septic patients...
February 10, 2024: International Urology and Nephrology
https://read.qxmd.com/read/38251301/determining-physiological-and-energetic-demands-during-high-level-pommel-horse-routines-using-a-modified-method-based-on-heart-rate-oxygen-uptake-functions
#3
JOURNAL ARTICLE
Alexander Seemann-Sinn, Peter Rüdrich, Tom Gorges, Ingo Sandau, Falk Naundorf, Bernd Wolfarth
This study aimed (1) to assess the validity of a modified method (Mmod ) based on heart rate (HR)-oxygen uptake (VO2 ) regression functions to calculate total energy costs (Wtotal ) and aerobic (Waer ) and anaerobic alactic energy contribution (Wpcr ) and (2) to analyse the physiological and energetic demands of high-level pommel horse routines (PH routines). The Mmod was developed because VO2 measurements are limited during high-level PH routines. Answering Part 1, nine male artistic gymnasts performed a PH routine where energy costs were calculated from VO2 measurements and then compared with energy costs determined from the HR- VO2 regressions of Mmod 's two additional tests...
January 10, 2024: Sports
https://read.qxmd.com/read/38194958/effect-of-the%C3%A2-fran-crossfit-workout-on-oxygen-uptake-kinetics-energetics-and-postexercise-muscle-function-in-trained-crossfitters
#4
JOURNAL ARTICLE
Manoel Rios, Klaus Magno Becker, Ana Sofia Monteiro, Pedro Fonseca, David B Pyne, Victor Machado Reis, Daniel Moreira-Gonçalves, Ricardo J Fernandes
PURPOSE: Fran is one of the most popular CrossFit benchmark workouts used to control CrossFitters' improvements. Detailed physiological characterization of Fran is needed for a more specific evaluation of CrossFitters' training performance improvements. The aim of the study was to analyze the oxygen uptake (V˙O2) kinetics and characterize the energy system contributions and the degree of postexercise fatigue of the unbroken Fran. METHODS: Twenty trained CrossFitters performed Fran at maximal exertion...
January 9, 2024: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/38112354/peculiarities-of-parameters-of-aerobic-and-anaerobic-productivity-depending-on-the-components-of-body-weight-in-young-males-from-the-mountainous-districts-of-zakarpattia
#5
JOURNAL ARTICLE
Olena A Dulo, Yurii M Furman, Nataliia M Hema-Bahyna, Petro P Horvat, Tamara B Kutek
OBJECTIVE: The aim: To establish differences in the aerobic and anaerobic capacity in young males with different components of body weight who live in the mountainous districts of Zakarpattia region. PATIENTS AND METHODS: Materials and methods: 124 young men aged 17-21 were examined to determine the aerobic and anaerobic capabilities of the body, taking into account the components of body weight. RESULTS: Results: The level of aerobic productivity, which reflects physical health, depends on the component composition of the body...
2023: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://read.qxmd.com/read/37940111/reliability-of-anaerobic-contributions-during-a-single-exhaustive-knee-extensor-exercise
#6
JOURNAL ARTICLE
Gabriel Luches-Pereira, Carlos Augusto Kalva-Filho, Danilo Bertucci, Carlos Dellavechia de Carvalho, Ricardo Augusto Barbieri, Marcelo Papoti
The total anaerobic contribution (AC[La-]+PCr ) is a valid and reliable methodology. However, the active muscle mass plays an important role in the AC[La-]+PCr determination, which might influence its reliability. Thus, this study aimed to investigate the effects of two exhaustive intensities on the reliability of the AC[La-]+PCr during a one-legged knee extension (1L-KE) exercise. Thirteen physically active males were submitted to a graded exercise to determine the peak power output (PPO) in the 1L-KE. Then, two constant-load exercises were conducted to task failure at 100% (TTF100 ) and 110% (TTF110 ) of PPO and repeated on a third day...
November 8, 2023: International Journal of Sports Medicine
https://read.qxmd.com/read/37689400/determinants-of-1500-m-front-crawl-swimming-performance-in-triathletes-influence-of-physiological-and-biomechanical-variables
#7
JOURNAL ARTICLE
Óscar López-Belmonte, Jesús J Ruiz-Navarro, Ana Gay, Francisco Cuenca-Fernández, Roberto Cejuela, Raúl Arellano
PURPOSE: To analyze the associations between physiological and biomechanical variables with the FINA (International Swimming Federation) points (ie, swimming performance) obtained in 1500-m front-crawl swimming to determine whether these variables can be used to explain triathletes' FINA points. METHODS: Fourteen world-class, international and national triathletes (10 male: 23.24 [3.70] y and 4 female: 23.36 [3.76] y) performed a 1500-m front-crawl swimming test in a short-course pool...
September 9, 2023: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/37369795/development-and-validation-of-dynamic-bioenergetic-model-for-intermittent-ergometer-cycling
#8
JOURNAL ARTICLE
Julius Lidar, Mats Ainegren, David Sundström
PURPOSE: The aim of this study was to develop and validate a bioenergetic model describing the dynamic behavior of the alactic, lactic, and aerobic metabolic energy supply systems as well as different sources of the total metabolic energy demand. METHODS: The bioenergetic supply model consisted of terms for the alactic, lactic, and aerobic system metabolic rates while the demand model consisted of terms for the corresponding metabolic rates of principal cycling work, pulmonary ventilation, and accumulated metabolites...
June 27, 2023: European Journal of Applied Physiology
https://read.qxmd.com/read/37242187/the-effect-of-acute-pre-workout-supplement-ingestion-on-basketball-specific-performance-of-well-trained-athletes
#9
RANDOMIZED CONTROLLED TRIAL
Athanasios Douligeris, Spyridon Methenitis, Antonia Lazou, George Panayiotou, Konstantinos Feidantsis, Gavriela Voulgaridou, Yannis Manios, Athanasios Z Jamurtas, Constantinos Giaginis, Sousana K Papadopoulou
A pre-workout supplement's (PWS; 200 mg caffeine, 3.3 g creatine monohydrate, 3.2 g β-alanine, 6 g citrulline malate and 5 g branched chained amino acid (BCAA) per dose) acute effects on the alactic (jumping, sprinting, agility), lactic (Running-Based Anaerobic Sprint Test, RAST) and aerobic performance (Yo-Yo Intermittent Recovery Test Level 1, Yo-Yo IRL1 VO2max ) of well-trained basketball players was investigated in this double-blind placebo-controlled study. Thirty players (age 18-31 years, height 166-195 cm, weight 70...
May 14, 2023: Nutrients
https://read.qxmd.com/read/37225165/bioenergetic-analysis-and-fatigue-assessment-during-the-fran-workout-in-experienced-crossfitters
#10
JOURNAL ARTICLE
Manoel Rios, Rodrigo Zacca, Rui Azevedo, Pedro Fonseca, David B Pyne, Victor Machado Reis, Daniel Moreira-Gonçalves, Ricardo J Fernandes
AIM: To quantify the physiological demands and impact of muscle function t of the Fran workout, one of the most popular CrossFit benchmarks. METHODS: Twenty experienced CrossFitters-16 male: 29 (6) years old and 4 female: 26 (5) years old- performed 3 rounds (with 30-s rests in between) of 21-21, 15-15, and 9-9 front squats to overhead press plus pull-up repetitions. Oxygen uptake and heart rate were measured at baseline, during the workout, and in the recovery period...
July 1, 2023: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/37160292/physiological-and-energetic-demands-during-still-rings-routines-of-elite-artistic-gymnasts
#11
JOURNAL ARTICLE
Alexander Seemann-Sinn, Peter Rüdrich, Tom Gorges, Falk Naundorf, Bernd Wolfarth
PURPOSE: The aim of the study was to analyze physiological and energetic demands of elite gymnasts during still-rings routines (SRRs). METHODS: Eleven male gymnasts (mean [SD] 23.6 [3.9] y, 65.9 [5.6] kg, 171.1 [6.7] cm) performed a maximal graded exercise test and an individual SRR, during which respiratory gas and heart rate (HR) were measured using a mobile spiroergometer and a paired HR sensor. Metabolic energy and the energy contribution in terms of aerobic, anaerobic lactic, and anaerobic alactic were determined by oxygen uptake (VO2) during exercise, net lactate production, and the fast component of postexercise VO2 kinetics...
May 9, 2023: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/36828314/a-novel-approach-to-the-determination-of-time-and-fatigue-dependent-efficiency-during-maximal-cycling-sprints
#12
JOURNAL ARTICLE
Anna Katharina Dunst, Clemens Hesse, Olaf Ueberschär, Hans-Christer Holmberg
BACKGROUND: During maximal cycling sprints, efficiency (η) is determined by the fiber composition of the muscles activated and cadence-dependent power output. To date, due to methodological limitations, it has only been possible to calculate gross efficiency (i.e., the ratio of total mechanical to total metabolic work) in vivo without assessing the impact of cadence and changes during exercise. Eliminating the impact of cadence provides optimal efficiency (ηopt ), which can be modeled as a function of time...
January 28, 2023: Sports
https://read.qxmd.com/read/36814958/adaptive-changes-in-bodybuilders-in-conditions-of-different-energy-supply-modes-and-intensity-of-training-load-regimes-using-machine-and-free-weight-exercises
#13
RANDOMIZED CONTROLLED TRIAL
Andrii Chernozub, Veaceslav Manolachi, Anatolii Tsos, Vladimir Potop, Georgiy Korobeynikov, Victor Manolachi, Liudmyla Sherstiuk, Jie Zhao, Ion Mihaila
BACKGROUND: The research was aimed at comparing the effect of using two types of training load different in intensity and energy supply. We studied the influence of the proposed load variations (machine and free weight exercises) on long-term adaptation of the body at the stage of specialized basic training in bodybuilding. METHODS: A total of 64 athletes aged 18-20 years were examined. The research participants were randomly divided into four groups, 16 athletes in each group...
2023: PeerJ
https://read.qxmd.com/read/36801815/erratum-a-novel-approach-to-determining-the-alactic-time-span-in-connection-with-assessment-of-the-maximal-rate-of-lactate-accumulation-in-elite-track-cyclists
#14
(no author information available yet)
No abstract text is available yet for this article.
January 1, 2023: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/36640477/alactic-base-excess-is-an-independent-predictor-of-death-in-sepsis-a-propensity-score-analysis
#15
JOURNAL ARTICLE
Joaquín Cantos, Iván A Huespe, Jorge F Sinner, Eduardo M Prado, Eduardo San Roman, Nicolás Contrera Rolón, Carlos G Musso
PURPOSE: Alactic base excess (ABE) is a novel biomarker defined as the sum of lactate and standard base excess and estimates the renal capability of handling acid-base disturbances in sepsis. The objective of this study is to see if ABE is an independent predictor of mortality in septic patients with and without renal dysfunction. MATERIALS AND METHODS: We retrospectively studied 1178 patients with sepsis and septic shock. Patients were divided according to ABE values: 1) negative ABE (<-3 mmol/L); 2) neutral ABE (≥ - 3 and < 4 mmol/L); and 3) positive ABE (≥4 mmol/L)...
April 2023: Journal of Critical Care
https://read.qxmd.com/read/36596309/a-novel-approach-to-determining-the-alactic-time-span-in-connection-with-assessment-of-the-maximal-rate-of-lactate-accumulation-in-elite-track-cyclists
#16
JOURNAL ARTICLE
Anna Katharina Dunst, Clemens Hesse, Andri Feldmann, Hans Christer Holmberg
PURPOSE: Following short-term all-out exercise, the maximal rate of glycolysis is frequently assessed on the basis of the maximal rate of lactate accumulation in the blood. Since the end of the interval without significant accumulation (talac) is 1 of 2 denominators in the calculation employed, accurate determination of this parameter is crucial. Although the very existence and definition of talac, as well as the validity of its determination as time-to-peak power (tPpeak), remain controversial, this parameter plays a key role in anaerobic diagnostics...
January 3, 2023: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/36480749/simplified-acute-physiology-score-ii-and-mannheim-peritonitis-index-are-associated-with-in-hospital-mortality-in-patients-with-abdominal-sepsis-admitted-to-icu
#17
JOURNAL ARTICLE
Jesús S Sánchez-Díaz, Diego Escarraman-Martínez, Manuel A Guerrero-Gutiérrez, Héctor D Meza-Comparán, Javier Mancilla-Galindo, Karla G Peniche-Moguel, Eduardo A González-Escudero, Luis Del Carpio-Orantes, Enrique Monares-Zepeda, Orlando R Perez-Nieto, Eder I Zamarrón-López, Ernesto Deloya-Tomas, Verónica Calyeca-Sanchez, Ashuin Kammar-García
OBJECTIVE: The objective of this study was to assess the association and interaction of laboratory parameters, Simplified Acute Physiology Score II (SAPSII), Modified Shock Index (MSI), and Mannheim Peritonitis Index (MPI) with in-hospital mortality. MATERIAL AND METHODS: We conducted a single-center case-control study. Adult patients with abdominal sepsis were included from May 2015 to May 2020. Baseline characteristics, laboratory parameters, SAPSII, MSI, and MPI scores at admission were collected...
2022: Cirugia y Cirujanos
https://read.qxmd.com/read/36472261/gender-and-somatotypological-peculiarities-of-indicators-of-aerobic-and-anaerobic-productivity-of-energy-supply-of-the-body-in-the-post-pubertal-period-of-ontogenesis-in-the-residents-of-the-zakarpattia-region
#18
JOURNAL ARTICLE
Olena A Dulo, Yurii M Furman, Nataliia M Hema-Bahyna
OBJECTIVE: The aim: To establish gender differences in aerobic and anaerobic productivity in practically healthy residents of the Zakarpattia region in the post-pubertal period of ontogenesis, depending on the somatotypological characteristics of the organism. PATIENTS AND METHODS: Materials and methods: A comparative analysis of physical health status of 456 individuals, was carried out, whit was assessed by indicators of aerobic and anaerobic productivity of the body, depending on the somatotype, which was determined by the Heath-Carter method, and depending on the component body composition which was determined using the impedance method...
2022: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://read.qxmd.com/read/36294445/admission-lactate-concentration-base-excess-and-alactic-base-excess-predict-the-28-day-inward-mortality-in-shock-patients
#19
JOURNAL ARTICLE
Piotr Smuszkiewicz, Natalia Jawień, Jakub Szrama, Marta Lubarska, Krzysztof Kusza, Przemysław Guzik
Base excess (BE) and lactate concentration may predict mortality in critically ill patients. However, the predictive values of alactic BE (aBE; the sum of BE and lactate), or a combination of BE and lactate are unknown. The study aimed to investigate whether BE, lactate, and aBE measured on admission to ICU may predict the 28-day mortality for patients undergoing any form of shock. In 143 consecutive adults, arterial BE, lactate, and aBE were measured upon ICU admission. Receiver Operating Curve (ROC) characteristics and Cox proportional hazard regression models (adjusted to age, gender, forms of shock, and presence of severe renal failure) were then used to investigate any association between these parameters and 28-day mortality...
October 18, 2022: Journal of Clinical Medicine
https://read.qxmd.com/read/36216336/reliability-of-the-3-component-model-of-aerobic-anaerobic-lactic-and-anaerobic-alactic-energy-distribution-pcr-la-o2-for-energetic-profiling-of-continuous-and-intermittent-exercise
#20
JOURNAL ARTICLE
Sebastian Kaufmann, Richard Latzel, Ralph Beneke, Olaf Hoos
PURPOSE: To assess the test-retest reliability of the continuous (PCr-LA-O2) and intermittent (PCr-LA-O2int) version of the 3-component model of energy distribution in an applied setting. METHODS: Sixteen male handball players (age 23 [3] y, height 185 [7] cm, weight 85 [14] kg) completed the 30-15 Intermittent Fitness Test (30-15IFT) twice. Performance was assessed by peak speed (speed of the last successfully completed stage of the 30-15IFT [VIFT], in kilometers per hour) and time to exhaustion (in seconds)...
October 10, 2022: International Journal of Sports Physiology and Performance
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