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Keywords: exercise
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Journal Articles
J Exp Biol (2022) 225 (15): jeb243646.
Published: 9 August 2022
... increased COT behaviourally by adjusting movement rate and habitat selection. Here, we review the theory underlying COT and the impact of environmental changes on COT. Increasing temperatures, in particular, increase COT and its variability between individuals. Thermal acclimation and exercise can affect...
Journal Articles
J Exp Biol (2022) 225 (11): jeb244239.
Published: 6 June 2022
... methodology. Respirometry Hypoxia Maximum oxygen uptake Aerobic scope Metabolic rate Exercise British Columbia Salmon Restoration and Innovation Fund BCSRIF-083 Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (Suppl_1): jeb243421.
Published: 8 March 2022
... O 2 uptake capacity and possibly aerobic performance in situations of high O 2 demand (e.g. exercise) or low O 2 availability (e.g. environmental hypoxia). We also found that FW fishes had significantly higher haemoglobin (Hb)–O 2 binding affinities than SW species, which will increase the O 2...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (1): jeb243194.
Published: 6 January 2022
... Exercise French Government France Canada Research Fund 149716-2018 Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 05955-2017 Canada Research Chair 950-230954 To improve physical performance...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (16): jeb210849.
Published: 13 August 2021
... species ( Taylor et al., 1987 ; Weibel et al., 1987 ). They observed a similar scaling relationship between exercise V̇ O 2 ,max and the absolute volume of mitochondria in active muscles (a key determinant of the capacity for mitochondrial O 2 utilization) across wild and domestic mammals spanning...
Journal Articles
J Exp Biol (2021) 224 (13): jeb232520.
Published: 29 June 2021
... provide evidence that O 2 supply capacity is not constant in all fishes, with some species exhibiting an elevated O 2 supply capacity in hypoxic environments. We further discuss the divergent selective pressures on hypoxia- and exercise-based cardiorespiratory adaptations in fishes, while also considering...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (8): jeb235846.
Published: 26 April 2021
... by The Company of Biologists Ltd 2021 Summary: Experimentally increased foraging effort and reproduction affects overall daily energy expenditure in zebra finches and provides evidence for sex-specific differences in energy management strategies. Exercise Workload Parental care Energetics...
Includes: Supplementary data
Journal Articles
In collection:
Cardiology articles
J Exp Biol (2021) 224 (6): jeb234237.
Published: 18 March 2021
...Franziska Röchner; Angelika Schmitt; Anne-Lena Brändle; Annunziata Fragasso; Barbara Munz ABSTRACT Regular exercise induces a broad spectrum of adaptation reactions in a variety of tissues and organs. However, the respective mechanisms are incompletely understood. In the context of their analysis...
Journal Articles
J Exp Biol (2021) 224 (4): jeb239699.
Published: 25 February 2021
... developmental periods potentially has long-lasting impacts on hosts. Using four selectively bred high runner and four non-selected control lines of mice, we examined the effects of early-life diet and exercise manipulations on the adult microbiome by sequencing the hypervariable internal transcribed spacer...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (5): jeb217125.
Published: 11 March 2020
... to the interacting stressors of hypoxia and exercise vary among individuals, and that HT and change in HT are not simple functions of aerobic metabolic rate. * Author for correspondence ( kkraskura@ucsb.edu ) Competing interests The authors declare no competing or financial interests. 22 10 2019...
Journal Articles
In collection:
Cardiology articles
J Exp Biol (2020) 223 (5): jeb214163.
Published: 11 March 2020
... and hunting prey. This response is variable and modulated by factors such as dive duration, depth, exercise and cognitive control. This study assessed the potential role of exercise and relative lung volume in the regulation of heart rate ( f H ) during dives of adult female California sea lions instrumented...
Journal Articles
J Exp Biol (2020) 223 (4): jeb215335.
Published: 20 February 2020
... Exercise Stroke volume Contractility Inotropy Vasodilatation Arthur C. Guyton (1919–2003) revolutionised our understanding of the circulation by arguing that regulation of the heart per se plays only a minor role in the normal control of cardiac output, despite heart rate ( f H ) being one...
Journal Articles
J Exp Biol (2019) 222 (23): jeb213058.
Published: 10 December 2019
... activity patterns, we analyzed femora of growing turkeys that were experimentally exercised for 10 weeks on either an inclined or declined treadmill or served as controls ( N =15 individuals, 5 per group). Our multivariate approach identified certain patterns involving three different entheses (associated...
Journal Articles
J Exp Biol (2019) 222 (16): jeb205211.
Published: 16 August 2019
... , 185 - 191 . 10.1016/0300-9629(77)90224-9 Joyce , W. , Elsey , R. M. , Wang , T. and Crossley , D. A. II ( 2018 ). Maximum heart rate does not limit cardiac output at rest or during exercise in the American alligator (Alligator mississippiensis) . Am. J. Physiol. Regul...
Journal Articles
J Exp Biol (2019) 222 (14): jeb199711.
Published: 19 July 2019
...Fabo Shan; Tao Yang; Junxia Li; Qing-Yuan Huang ABSTRACT It is well known that exercise-induced fatigue is exacerbated following hypoxia exposure and may arise from central and/or peripheral mechanisms. To assess the relative contribution of peripheral and central factors to exercise-induced...
Journal Articles
J Exp Biol (2019) 222 (10): jeb198424.
Published: 29 May 2019
...Hossein Shirvani; Saleh Rahmati-Ahmadabad; David Robert Broom; Reza Mirnejad ABSTRACT The hypothalamus controls metabolism and feeding behaviour via several signals with other tissues. Exercise and supplements can change hypothalamic signalling pathways, so the present study investigated...
Journal Articles
J Exp Biol (2019) 222 (9): jeb201400.
Published: 30 April 2019
... in zebrafish ( Danio rerio ). We rejected the hypothesis that mitochondrial efficiency (P/O ratios) predicted CoT. We also rejected the hypothesis that CoT is modulated by temperature acclimation, exercise training or their interaction, although CoT increased with increasing acute test temperature...
Journal Articles
J Exp Biol (2019) 222 (6): jeb197426.
Published: 27 March 2019
... at 8°C only, it would yield essentially the same, highly significant change ( P <0.01) for both resistance and conductance. However, we argue that this would not be the immediate, or most appropriate, choice for the original two-factor (temperature and exercise) analysis. Furthermore, this would...
Journal Articles
J Exp Biol (2018) 221 (22): jeb191056.
Published: 14 November 2018
...Kang Nian Yap; Morag F. Dick; Christopher G. Guglielmo; Tony D. Williams ABSTRACT Despite widely held assumptions that hematocrit (Hct) is a key determinant of aerobic capacity and exercise performance, this relationship has not often been tested rigorously in birds and results to date are mixed...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (21): jeb164327.
Published: 31 October 2018
...Hans Hoppeler ABSTRACT Maximal oxygen consumption ( V̇ O 2 ,max ) denotes the upper limit of aerobic energy flux through the cascade of oxygen transfer from the environment to tissue mitochondria, essentially to skeletal muscle mitochondria during intense exercise. A high V̇ O 2 ,max is a key...