Biomarcadores de estresse em ratos exercitados por natação em intensidades igual e superior à máxima fase estável de lactato

Contarteze, Ricardo Vinícius Ledesma; Manchado, Fúlvia de Barros; Gobatto, Cláudio Alexandre; Mello, María Alice Rostom de

doi:10.1590/s1517-86922007000300008

Cited by 12 publications

(11 citation statements)

References 41 publications

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“…The same was demonstrated by Manchado et al 11 when analyzing the MLSS in Wistar rats submitted to treadmill running and swimming exercise (~3Á9 mmolÁl -1 versus~5Á9 mmolÁl -1 , respectively). In fact, Contarteze et al 26,27 have demonstrated increased levels of stress biomarkers, such as corticosterone and adrenocorticotropic hormones, in rats submitted to swimming exercise when compared with running mice.…”

Section: Discussionmentioning

confidence: 99%

Assessment of aerobic capacity during swimming exercise in ob/ob mice

et al. 2011

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Obesity is a highly prevalent condition associated with several diseases. Physical exercise has been considered as a non-pharmacological tool in the treatment of obesity. However, several aspects underlying exercise evaluation and prescription in obesity and associated pathologies are still under investigation. Although many research involving exercise have been performed in animal models, there is a lack of protocols for aerobic capacity assessment in obese animals, such as the ob/ob mice. This study aimed the following: (i) to verify the possibility of determining the lactate threshold (LT) on swimming exercise in ob/ob mice and in non-obese heterozygote mice (ob/OB), through visual inspection (vLT) and polynomial adjustment (pLT); and (ii) to verify if the LT determined through these protocols corresponds to the maximal lactate steady state (MLSS). Eight ob/ob and ten ob/OB mice performed an incremental exercise test to determine vLT and pLT as well as constant-load exercise bouts to determine MLSS. There were no within-group differences between vLT, pLT and MLSS [ob/ob: ~5.3% body weight (BW); ob/OB: ~3·6%BW] with a high agreement among protocols. In conclusion, the identification of the LT and MLSS intensities was possible for both groups. These data suggest that the proposed protocols may be used in new research on the effects of different exercise intensities on some aspects of obesity.

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Section: Discussionmentioning

confidence: 99%

Assessment of aerobic capacity during swimming exercise in ob/ob mice

et al. 2011

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“…The animals performed the training with frequency of five days per week (one hour/day), supporting load equivalent to 2% of their body weight attached to their torsos, during eight weeks, with beginning at 90 days old. The 2% of their body weight intensity used in the present study may be considered light to moderate or subliminary, since it is already well-established that the load equivalent to the aerobic/anaerobic metabolic transition (anaerobic threshold) is obtained in average at 5% of body weight from the application of different tests adapted to the rat conditions during the swimming exercise 10 .…”

Section: Dietmentioning

confidence: 99%

Efeito de dietas hiperlipídicas com extrato de baru e chocolate sobre a área de adipócitos de ratos submetidos ao exercício físico

Ravagnani

Ravagnani²,

Neto³

et al. 2012

Rev Bras Med Esporte

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Introduction: Fat tissue accumulation provokes several metabolic disorders, which may be attenuated by dietetic modulation and physical exercise. Objective: The effects of hypercaloric/hyperlipidic diets with additional baru extract associated to aerobic exercise on adipocytes from different regions as well as on hepatic triglycerides (TGL hep )of Wistar rats were evaluated. Methods: The animals, except for the control ones (Nuvilab ® diet: 3.48kcal/g), were fed with a chocolate-based diet (4.17 kcal/g) during 2 months in order to induce obesity. The animals were then distributed into 6 groups, according to the introduction of baru extract diet as well as to swimming training: Sedentary Control (SC); Trained Control (TC); Sedentary Baru (SB); Trained Baru (TB); Sedentary Chocolate (SCho) and Trained Chocolate (TCho). The trained animals were subjected to swimming exercise supporting overload equivalent to 2% of body weight, during 8 weeks, 5x/week, and 1h/day. At the end, the animals were killed and the TGL hep content was determined. The retroperitoneal (RET), inguinal (IN), and omental (OM) fat tissues were excised, weighted, and submitted to adipocyte area evaluation. Results:The hypercaloric diet increased both body weight and cell areas of RET if compared to the control diet (P<0.05). The physical training decreased the OM (TCho: 6370.91 ± 7776.13 < SCho: 7341.28 ± 2.24 µm2) and IN (TCho: 5147.49 ± 5712.71 < SCho: 7083.11±7682.40 µm2) cell areas of chocolate group as well as IN cell areas of TC

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“…Studies show that cortisol secretion increases with the intensity of the physical activity. High-intensity exercise increases the activity of stress hormones, such as cortisol, adrenocorticotropic hormone (ACTH), and catecholamines (norepinephrine, epinephrine, and dopamine) [37,38]. The increase of these hormones may inhibit synthesis and stimulation of protein degradation, and consequently lead to their breakdown in skeletal muscles [39].…”

Section: Discussionmentioning

confidence: 99%

A randomised-controlled trial pilot study examining the effect of pelvic floor muscle training on steroid hormone concentrations in elderly women with stress urinary incontinence

Weber‐Rajek¹,

Radzimińska²,

Strączyńska³

et al. 2019

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Introduction: In this study, we attempted to examine the effect of pelvic floor muscle training on testosterone and cortisol concentrations in elderly women with stress urinary incontinence.Material and methods: The number of participants included in the analysis was 59: 30 women in the experimental group (EG) and 29 women in the control group (CG). The EG underwent pelvic floor muscle training, whereas the CG did not receive any therapeutic intervention. In the present study the authors measured testosterone and cortisol concentrations as well as body mass index (BMI) in all study participants at the initial and final assessments.Results: The initial and final assessment results were compared and showed a statistically significant decrease in cortisol concentration and an increase in testosterone concentration in the EG. However, no statistically significant differences in the measured variables were observed in the CG at the initial and final assessments. The authors did not report any statistically significant correlations between testosterone and cortisol concentrations and the BMI score in the EG and CG. Also, statistically significant correlations between testosterone and cortisol concentrations in the EG were not apparent.Conclusions: Determination of the concentration of testosterone and cortisol is a method that may help to objectify pelvic floor muscle training outcomes in elderly women with stress urinary incontinence.

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Biomarcadores de estresse em ratos exercitados por natação em intensidades igual e superior à máxima fase estável de lactato

Cited by 12 publications

References 41 publications

Assessment of aerobic capacity during swimming exercise in ob/ob mice

Assessment of aerobic capacity during swimming exercise in ob/ob mice

Efeito de dietas hiperlipídicas com extrato de baru e chocolate sobre a área de adipócitos de ratos submetidos ao exercício físico

A randomised-controlled trial pilot study examining the effect of pelvic floor muscle training on steroid hormone concentrations in elderly women with stress urinary incontinence

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