Results 81 to 90 of about 1,121,715 (272)

Validity of the maximum oxygen deficit accumulated as an index of the anaerobic capacity

European Journal of Human Movement, 2010
To assess the validity of the maximal accumulated oxygen deficit (MAOD) as a measure of the anaerobic capacity, the following variables were determined in twenty nine male Physical Education students: the DMOA, the blood lactate concentration at the end ...
J. A. L. Calbet, C. Dorado, J. Sanchis, J. Cortadellas, C. Ferragut   +4 more
doaj  

EFFECT OF ACUTE HYPOXIA ON POST-EXERCISE PARASYMPATHETIC REACTIVATION IN HEALTHY MEN

Frontiers in Physiology, 2012
In this study we assessed the effect of acute hypoxia on post-exercise parasympathetic reactivation inferred from heart rate (HR) recovery (HRR) and HR variability (HRV) indices. Ten healthy males participated in this study.
Hani eAl Haddad, Alberto eMendez-Villanueva, Pitre C Bourdon, Martin eBuchheit   +3 more
doaj   +1 more source

Current aspects of high-intensity interval training for older adults: a narrative review

Journal of Physical Fitness and Sports Medicine, 2022
Negative aspects of aging include a decrease in muscle mass/strength and maximal oxygen consumption (VO2max). The most beneficial and adaptable protocol among the various exercise methods should be explored in older adults.
Shigenori Ito
doaj   +1 more source

Cerebral oxygen extraction across different exercise intensities: Role of arterial PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$

Experimental Physiology, EarlyView.
Abstract Stability in cerebral oxygen extraction fraction (OEF) is typically determined by alterations in cerebral blood flow (CBF). At rest, arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_2}}}$) and OEF exhibit a strong inverse relationship owing to the powerful influence of PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_2}}}$
L. Madden Brewster, Travis Dylan Gibbons, Hannah Grace Caldwell, Connor A. Howe, Jennifer S. Duffy, Andrew R. Steele, Justin A. Monteleone, Jay M. J. R. Carr, Jodie Lauren Koep, Tenasia D. R. Monaghan, David B. MacLeod, Philip N. Ainslie   +11 more
wiley   +1 more source

Carbohydrate mouth rinse reduces rating of perceived exertion but does not affect performance and energy systems contribution during a high-intensity exercise

Motriz: Revista de Educacao Fisica, 2017
Aim The study aimed to verify the effect of carbohydrate (CHO) mouth rinse on time to exhaustion, energy systems contribution and rating of perceived exertion (RPE) during a high-intensity exercise. Methods Fourteen men performed an incremental exercise
Victor José Bastos-Silva, Gustavo Gomes de Araujo, Sérgio Victor dos Santos Franco, Alan de Albuquerque Melo, Sara Kely Learsi, Adriano Eduardo Lima-Silva, Romulo Bertuzzi   +6 more
doaj   +1 more source

Effects of Low Cell pH and Elevated Inorganic Phosphate on the pCa-Force Relationship in Single Muscle Fibers at Near-Physiological Temperatures [PDF]

, 2014
Intense muscle contraction induces high rates of ATP hydrolysis with resulting increases in Pi, H+, and ADP, factors thought to induce fatigue by interfering with steps in the cross-bridge cycle.
Fitts, Robert H., Nelson, Cassandra R.
core   +2 more sources

Sex and performance‐level differences in aerobic and haematological parameters among elite ski mountaineering athletes

Experimental Physiology, EarlyView.
Abstract Ski mountaineering (SkiMo) is a new Olympic sport with extreme endurance demands and altitude exposure. Previous studies have focused on traditional cardiorespiratory variables, such as maximal oxygen consumption (V̇O2max${\dot V_{{{\mathrm{O}}_{\mathrm{2}}}{\mathrm{max}}}}$) or ventilatory thresholds, but, to our knowledge, did not report ...
Forrest Schorderet, Bastien Krumm, Basile Moreillon, Justin Mottet, Antoine Raberin, Nicolas Bourdillon, Raphael Faiss, Grégoire P. Millet   +7 more
wiley   +1 more source

Differences between genders in anaerobic capacity during a supramaximal effort

Motriz: Revista de Educacao Fisica, 2019
Aim: The present study aimed to verify if there is a difference between genders in anaerobic capacity estimated by energetic equivalents of glycolytic and phosphagen pathways (AC[La-]+EPOCfast).
Rodrigo A. B. de Poli, Joel A.M Gonzalez, Natalia Fonsati, Alessandro M. Zagatto   +3 more
doaj   +1 more source

Acute Supramaximal Exercise-Induced Adiponectin Increase in Healthy Volunteers: Involvement of Natriuretic Peptides

, 2017
Exercise may modulate lipolysis via leading to natriuretic peptide secretion and beta-adrenergic activation. Adiponectin, an adipose-secreted multifunctional signaling protein, may be the missing link between exercise and lipolytic activity.
Gülnur Öztürk, Oktay Kaya, Elif Gürel, O. Palabıyık, H. Kunduracılar, N. Sut, L. Öztürk, Selma Arzu Vardarb   +7 more
semanticscholar   +1 more source

Corticospinal, reticulospinal and motoneuronal contributions to fatigability during a sustained contraction of the elbow flexors

Experimental Physiology, EarlyView.
Abstract Synaptic input to the motoneuron pool is altered during fatiguing muscle contractions. In humans, the corticospinal tract is often studied, with equivocal findings regarding its role in the reduction of force. To date, the involvement of the reticulospinal tract during states of fatigue has not been explored.
Oliver Hayman, Rosiered Brownson‐Smith, Elliott I. Atkinson, Padraig Spillane, Stuart Baker, Stuart Goodall, Glyn Howatson, Kevin Thomas, Paul Ansdell   +8 more
wiley   +1 more source