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Home / Equine Research Bank / Equine Vet J Suppl / Effect of short-term exercise training on insulin sensitivit...
Equine veterinary journal. Supplement2002; (34); 81-84; doi: 10.1111/j.2042-3306.2002.tb05396.x

Effect of short-term exercise training on insulin sensitivity in obese and lean mares.

Abstract: Twelve untrained aged mares were used to determine whether 7 days of light exercise improved peripheral tissue insulin sensitivity. Mares were divided into obese-exercised (n = 3), obese-sedentary (n = 3), lean-exercised (n = 3) and lean-sedentary (n = 3) groups. The exercised groups were worked at a trot to a heart rate (HR) of not more than 140 beats/min for 30 min in a round pen. Each group was subjected to 3 euglycaemic hyperinsulinaemic clamps: prior to exercise (P), 24 h following the seventh exercise training session (E) and 9 days postexercise training (PE). Prior to exercise training, the mares in the obese group were confirmed insulin-resistant compared to the mares in the lean group. There was no change in bodyweight or body condition in the obese or lean groups throughout the study. Glucose infusion rate (GIR) was higher (P<0.05) on E compared to P days in the obese-exercised and lean-exercised groups. Insulin sensitivity returned to pre-exercise values by 9 days postexercise in the obese-exercised and lean-exercised groups. The results of this study suggest that improvement in insulin sensitivity occurs in obese mares without a long interval of exercise training and in the absence of a change in bodyweight.
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Publication Date: 2002-10-31 PubMed ID: 12405664DOI: 10.1111/j.2042-3306.2002.tb05396.xGoogle Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research investigates the influence of short-term exercise on insulin sensitivity in obese and lean mares. The study concludes that even a brief period of exercise can improve insulin sensitivity in both obese and lean mares, irrespective of change in body weight.

Methodology

  • The study used twelve untrained, aged mares and divided them into categories based on weight (obese and lean) and physical activity (exercised and sedentary).
  • Exercise for the relevant groups was set at a trotting pace, not exceeding a heart rate of 140 beats per minute, for a span of 30 minutes.
  • Three euglycaemic hyperinsulinaemic clamps were carried out on each group at various stages. These tests were done before the exercise training (P), 24 hours after the final exercise session (E), and 9 days following the exercise training (PE).

Key Findings

  • Before the study, it was confirmed that the obese mares were insulin-resistant relative to the lean mares, as expected.
  • No significant change was seen in the mares’ bodyweight or condition regardless of their starting state or the introduction of exercise.
  • In terms of Glucose Infusion Rate (GIR), both the obese and lean exercised groups exhibited higher rates after exercise.
  • Insulin sensitivity in both exercised groups returned to pre-exercise levels by the 9-day post-exercise mark.

Conclusions

  • The authors suggest that even short-term light exercise can improve insulin sensitivity in mares, both obese and lean.
  • This improvement in insulin sensitivity did not necessitate a long duration of training or any major shift in body weight.
  • However, the improvement upon exercise seems temporary, as after a span of 9 days, insulin sensitivity regressed to its original state.

Cite This Article

APA
Powell DM, Reedy SE, Sessions DR, Fitzgerald BP. (2002). Effect of short-term exercise training on insulin sensitivity in obese and lean mares. Equine Vet J Suppl(34), 81-84. https://doi.org/10.1111/j.2042-3306.2002.tb05396.x

Publication

Equine veterinary journal. Supplement
NlmUniqueID: 9614088
Country: United States
Language: English
Issue: 34
Pages: 81-84

Researcher Affiliations

Powell, D M
  • Department of Veterinary Science, Maxwell Gluck Equine Research Center, University of Kentucky, Lexington 40546, USA.
Reedy, S E
    Sessions, D R
      Fitzgerald, B P

        MeSH Terms

        • Animals
        • Female
        • Glucose / metabolism
        • Glucose Clamp Technique / veterinary
        • Horse Diseases / blood
        • Horse Diseases / metabolism
        • Horses
        • Insulin / blood
        • Insulin Resistance / physiology
        • Obesity / blood
        • Obesity / metabolism
        • Obesity / veterinary
        • Physical Conditioning, Animal / physiology
        • Random Allocation

        Citations

        This article has been cited 16 times.
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