Effects of endurance training and captivity on activity metabolism of lizards.

@article{Garland1987EffectsOE,
  title={Effects of endurance training and captivity on activity metabolism of lizards.},
  author={Theodore Garland and Paul L. Else and A. J. Hulbert and Patrick Tap},
  journal={The American journal of physiology},
  year={1987},
  volume={252 3 Pt 2},
  pages={
          R450-6
        }
}
Two groups of Amphibolurus nuchalis, an Australian agamid lizard, were maintained in captivity for 8 wk. The "trained" group was given submaximal exercise at 1 km/h on a motorized treadmill, 30 min/day, 5 days/wk; the treadmill was inclined 10% for the last 5 wk. The "sedentary" group was not exercised. Endurance capacity did not change significantly in either group, but sprint speed decreased in trained lizards. The sedentary group exhibited significant decreases in maximal O2 consumption… 
View on PubMed
biology.ucr.edu
75 Citations
Highly Influential Citations
3
Background Citations
26
Methods Citations
4
Results Citations
8

Figures and Tables from this paper

75 Citations

Citation Type

Citation Type

Making Olympic lizards: the effects of specialised exercise training on performance
TLDR
Specialised training in lizards leads to dramatic increases in performance and changes in physiology and is revealed that muscle plasticity in response to training may be widespread phylogenetically.
Seasonal, sexual, and individual variation in endurance and activity metabolism in lizards.
TLDR
All organ masses scale allometrically; larger lizards have relatively smaller livers, but larger hearts and thigh muscles, and individual variation in endurance correlates with individual differences in heart LDH and thigh CS and PK activities.
Seasonal, sexual, and individual variation in endurance and activity metabolism in lizards
TLDR
SeasonaL, sexual, and individual variation in endurance and activity metabolism in lizards, collected in central Australia during mid and late summer, shows that Hematocrit and hemoglobin increase during early ontogeny, but are mass independent in adults.
Exercise training enhances aerobic capacity in juvenile estuarine crocodiles (Crocodylus porosus).
Exhaustive exercise training enhances aerobic capacity in American alligator (Alligator mississippiensis)
TLDR
This study confirms that estuarine crocodiles (Crocodylus porosus) increase their maximum metabolic rate in response to exhaustive treadmill training, and in the present study, this response in another crocodilian, American alligator (Alligator mississippiensis).
MakingOlympiclizards: theeffects ofspecialised exercisetraining on performance
TLDR
Performance and physiological differences among green anole lizards that were trained for sprinting or endurance, using an increasingly rigorous training regimen over 8 weeks reveal that muscle plasticity in response to training may be widespread phylogenetically.
Effects of swimming on metabolic recovery from anoxia in the painted turtle
TLDR
The hypothesis that 1 or 2 h of aerobic swimming following anoxic submergence would enhance the rate of lactate disappearance from the blood just as sustained aerobic exercise does in mammals and fishes following strenuous exercise is tested.
Timing of locomotor impairment and shift in thermal preferences during gravidity in a viviparous lizard
TLDR
The recovery of locomotor abilities after parturition was independent of the intensity of reproductive investment, and mass-independent variation in locomotor performances might be explained by physiological consequences of reproductionindependent of the physical burden.
Patterns of Metabolic Recovery from Exercise in Amphibians and Reptiles
TLDR
Whereas the recovery metabolism of many mammals seems to facilitate the rapid return of acid-base balance via lactate oxidation, the strategy of lactate removal employed by amphibians and reptiles provides for a mechanism of immediate muscle glycogen replenishment and consequently a reestablished capacity for subsequent activity.
The evolution of activity capacity.
The capacities of animals for activity (burst speed, maximal exertion, endurance) are examined in relation to their selective importance in extant populations and the pattern of their evolution in…
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 38 REFERENCES
Seasonal, sexual, and individual variation in endurance and activity metabolism in lizards.
TLDR
All organ masses scale allometrically; larger lizards have relatively smaller livers, but larger hearts and thigh muscles, and individual variation in endurance correlates with individual differences in heart LDH and thigh CS and PK activities.
Physiological and Biochemical Adaptations to Training in Rana pipiens
TLDR
The trained animals demonstrated a greater removal of lactate from the muscle 15 rain after fatigue, indicating an increased aerobic capacity and a response similar to that reported for mammals.
Physiological correlates of locomotory performance in a lizard: an allometric approach.
  • T. Garland
  • Biology
    The American journal of physiology
  • 1984
TLDR
Three measures of locomotory performance and a series of variables thought to affect performance were measured in the iguanid lizard Ctenosaura similis and it is indicated that 89% of the residual variation in ENDUR is correlated with variation among individuals in thigh muscle mass, VO2max, heart mass, and liver citrate synthase (CS) activity.
PHYSICAL TRAINING IMPROVES SWIMMING PERFORMANCE OF THE AFRICAN CLAWED FROG XENOPUS LAEVIS
TLDR
Frogs trained for endurance accumulated less lactate in muscle than untrained frogs performing the same swimming task, while trained frogs had low concentrations of glycogen in muscle and did not deplete it during exercise.
Exercise bioenergetics following sprint training.
Exercise capacity and cardiac function of rats with drug-induced cardiac enlargement.
TLDR
It is suggested that rodent hearts moderately enlarged by relatively low doses of isoproterenol possess normal metabolic and functional capacity and had no apparent effect on maximal exercise performance of the whole animal.
Dynamic exercise training in foxhounds. II. Analysis of skeletal muscle.
TLDR
Unlike humans and other mammals (i.e., rat), foxhounds did not manifest biochemical or histochemical adaptations in skeletal muscle as the result of endurance training.
Linear increase in aerobic power induced by a strenuous program of endurance exercise.
TLDR
It appears from these results that aerobic work capacity can increase more rapidly and to a greater extent in response to training than has generally been thought.
The response of the Galago senegalensis to physical training
ADAPTIVE RESPONSES IN DIFFERENT TYPES OF MUSCLE FIBERS TO ENDURANCE EXERCISE
TLDR
A series of studies were undertaken to investigate the effects of long-term exercise programs on the biochemical properties and patterns of glycogen utilization of three different types of rodent skeletal muscle, including liver and in different fiber types of skeletal muscle.
...
1
2
3
4
...