1990
DOI: 10.1139/z90-174
|View full text |Cite
|
Sign up to set email alerts
|

Effects of exercise training and coronary ablation on swimming performance, heart size, and cardiac enzymes in rainbow trout, Oncorhynchus mykiss

Abstract: Rainbow trout, Oncorhynchus mykiss, were exercise trained for 28–52 days. Trained fish were 13% larger and swam 12% faster in an aerobic swimming test. Training induced cardiac growth that was isometric with body growth, since ventricle mass relative to body mass was constant. The proportions of compact and spongy myocardia in the ventricle were also unchanged by training. Trained fish had significantly higher levels of citrate synthase, β-hydroxyacyl CoA dehydrogenase, and hexokinase in both compact and spong… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

9
86
1

Year Published

1995
1995
2023
2023

Publication Types

Select...
9

Relationship

0
9

Authors

Journals

citations
Cited by 132 publications
(96 citation statements)
references
References 0 publications
9
86
1
Order By: Relevance
“…This result is in line with previous studies on exercised salmonids (Gallaugher et al 2001, Castro et al 2013, even considering differences in setup, although exceptions do exist (Farrell et al 1990). The increase in heart size is most likely related to an increased cardiac workload during sustained swimming through an increase in aerobic respiration.…”
Section: Heart Morphologysupporting
confidence: 92%
See 1 more Smart Citation
“…This result is in line with previous studies on exercised salmonids (Gallaugher et al 2001, Castro et al 2013, even considering differences in setup, although exceptions do exist (Farrell et al 1990). The increase in heart size is most likely related to an increased cardiac workload during sustained swimming through an increase in aerobic respiration.…”
Section: Heart Morphologysupporting
confidence: 92%
“…Reduced ATP depletion after fatigue challenge and increased energy stores in muscle occurs in rainbow trout Oncorhynchus mykiss as an effect of exercise (Pearson et al 1990, McFarlane & McDonald 2002. Other positive effects of exercise include increased cardiac output (Farrell et al 1991), ventricular mass (Gallaugher et al 2001, Castro et al 2013, intestinal blood flow (Thorarensen et al 1993), maximum metabolic rate ) and swimming performance (Farrell et al 1990, Pearson et al 1990). There are also indications that exercise generates a more robust fish with a higher ability to cope with different challenges, such as pathogens (Castro et al 2011).…”
Section: Introductionmentioning
confidence: 99%
“…Active fishes usually have a larger relative heart mass (Santer, 1985;Farrell, 1991). Accordingly, exercise training can produce isometric cardiac growth as seen in rainbow trout (Farrell et al, 1990). Cardiac output depends on the volume of the heart and the pressure generated by wall tension.…”
Section: Addressing Capacity Performance and Energy Budgetmentioning
confidence: 99%
“…At swimming velocities approaching U crit , the metabolic demand for oxygen may be greater than that which can be provided by the cardio-respiratory system, just as would occur in hypoxic conditions (Jones and Randall, 1978). Likewise, exercise training in fish may also alter components of the cardio-respiratory system, for example, resulting in larger hearts or higher pumping performance (Hochachka, 1961;Farrell et al, 1990;Gamperl and Farrell, 2004), higher Hb and myoglobin concentration (Holk and Lykkeboe, 1998), and increased skeletal muscle capillarity and tissue O 2 extraction (Love et al, 1977;Gamperl and Farrell, 2004). An increase in M O2,max and U crit has been observed after exercise training in rainbow trout (Oncorhynchus mykiss) (Holk and Lykkeboe, 1998), darkbarbel catfish (Peltebagrus vachelli) (Liu et al, 2009;Li et al, 2010) and striped bass (Morone saxatilis) (Young and Cech, 1993;Young and Cech, 1994); however, they have not previously been investigated in goldfish.…”
Section: Introductionmentioning
confidence: 99%