Results 71 to 80 of about 8,763 (225)

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

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

The acute effect of maximal exercise on central and peripheral arterial stiffness indices and hemodynamics in children and adults [PDF]

, 2016
Xavier Melo is supported by a research grant from the Foundation for Science and Technology (FCT), Ministry of Education and Science of Portugal (grant: SFRH/ BD/ 70515/ 2010). Nuno M.
Fernhall, Bo, Melo, Xavier, Pimenta, Nuno, Pinto, Rita, Santa-Clara, Helena, Santos, Diana, Sardinha, Luis   +6 more
core   +1 more source

The influence of dietary carbohydrate and pre-exercise glucose consumption on supramaximal intermittent exercise performance. [PDF]

British Journal of Sports Medicine, 1994
The present study examined whether a pre-exercise consumption of glucose by subjects having adhered to a 3-day low carbohydrate (CHO) or normal CHO diet would influence supramaximal intermittent exercise performance. Sixteen moderately active men volunteers (mean(s.d.) age 20.0(1.3) years) agreed to undertake three exercise tests over an 8-day period ...
Jenkins, D.G., Hutchins, C.A., Spillman, D.   +2 more
openaire   +4 more sources

The efficacy and physiological bases of small muscle mass exercise in health and disease

Experimental Physiology, EarlyView.
Abstract The conventional approach to aerobic exercise prescription involves large muscle mass exercise and the manipulation of variables such as training intensity, duration and frequency to promote desired adaptations. However, during whole‐body exercise, central limitations (i.e., neural, pulmonary and/or cardiac) constrain exercise tolerance and ...
Callum G. Brownstein
wiley   +1 more source

Effect of Ischemic Preconditioning on the Recovery of Cardiac Autonomic Control From Repeated Sprint Exercise

Frontiers in Physiology, 2018
Repeated sprint exercise (RSE) acutely impairs post-exercise heart rate (HR) recovery (HRR) and time-domain heart rate variability (i. e., RMSSD), likely in part, due to lactic acidosis-induced reduction of cardiac vagal reactivation.
Thiago R. Lopes, Thiago R. Lopes, Thiago R. Lopes, Thiago R. Lopes, Jeann L. Sabino-Carvalho, Jeann L. Sabino-Carvalho, Thiago H. N. Ferreira, Thiago H. N. Ferreira, José E. Succi, Antônio C. Silva, Antônio C. Silva, Bruno M. Silva, Bruno M. Silva, Bruno M. Silva   +13 more
doaj   +1 more source

Mitochondrial haplotype and sex modulate responses to endurance exercise training

The Journal of Physiology, EarlyView.
Abstract figure legend Using OKC‐HETB/W rats we demonstrate that mitochondrial haplotype influences training responses of endurance exercise. Overall OKC‐HETW rats showed greater responses than OKC‐HETB in exercise tolerance, mitochondrial bioenergetics, mitochondrial DNA (mtDNA) mutation frequencies and motor co‐ordination.
Bumsoo Ahn, Tianhao Wei, Ryan Pettit‐Mee, Eunyoung Kim, Robert V. Musci, Jonathan Wanagat, Hoang Van M. Nguyen, Arlan Richardson, Hyunyoung Kim   +8 more
wiley   +1 more source

Variability in heart rate recovery measurements over 1 year in healthy, middle-aged adults. [PDF]

, 2014
This study assessed the longer-term (12-month) variability in post-exercise heart rate recovery following a submaximal exercise test. Longitudinal data was analysed for 97 healthy middle-aged adults (74 male, 23 female) from 2 occasions, 12 months apart.
Carroll, S, Ingle, L, Mellis, MG
core   +1 more source

Antioxidant supplementation blunts the proteome response to 3 weeks of sprint interval training preferentially in human type 2 muscle fibres

The Journal of Physiology, EarlyView.
Abstract figure legend Sprint interval training (SIT) is a popular time‐efficient type of endurance training. Healthy young men performed nine SIT sessions (4–6 × 30 s all‐out cycling sprints) over 3 weeks while being supplemented with antioxidants (high doses of vitamins C and E) or placebo. Muscle biopsies taken before and after the first SIT session
Victoria L. Wyckelsma, Marta Murgia, Sigitas Kamandulis, Stefano Gastaldello, Marius Brazaitis, Audrius Snieckus, Nerijus Eimantas, Mati Pääsuke, Sebastian Edman, William Apro, Daniel C. Andersson, Håkan Westerblad, Tomas Venckunas   +12 more
wiley   +1 more source

β-alanine supplementation improves in-vivo fresh and fatigued skeletal muscle relaxation speed [PDF]

, 2017
Purpose: In fresh muscle, supplementation with the rate-limiting precursor of carnosine, β-alanine (BA), results in a decline in muscle half-relaxation time (HRT) potentially via alterations to calcium (Ca2+) handling. Accumulation of hydrogen cation (H+)
B Ahlborg, Billy Maritza, C Lamont, C Sale, C Sale, C Sale, CA Hill, Cleveland Thomas Barnett, Craig Sale, D Lakens, DA Jones, DG Allen, DG Allen, DR Laver, DR Laver, EJ Baran, GP Zaloga, H Westerblad, H Westerblad, I Everaert, J Decombaz, JM Gillis, Joel Davidson, K Tran, KA Edman, KJ Preacher, L Dux, L Nogueira, M Bergström, M Muntener, MA Batrukova, MJ Comeau, MW Berchtold, NA Tillin, P Swietach, R Hannah, R Hannah, RC Harris, Rebecca Louise Jones, RM Hobson, Roger Harris, SC Little, TL Dutka, TL Dutka, V Guglielmi, William D. Fraser   +45 more
core   +3 more sources