A C Silva’s research while affiliated with Federal University of São Paulo and other places

What is this page?


This page lists works of an author who doesn't have a ResearchGate profile or hasn't added the works to their profile yet. It is automatically generated from public (personal) data to further our legitimate goal of comprehensive and accurate scientific recordkeeping. If you are this author and want this page removed, please let us know.

Publications (58)


Quantificação de parâmetros respiratórios em pacientes com epilepsia do lobo temporal
  • Article

January 2007

·

3 Reads

Arquivos de Neuro-Psiquiatria

·

A M F Abreu

·

M Albuquerque

·

[...]

·


Table 2 Pubertal stages in nonstunted (N) and stunted (S) girls throughout follow-up
Table 3 Association between socioeconomic variables and nutritional status at different moments of follow-up
Lower resting metabolic rate and higher velocity of weight gain in a prospective study of stunted vs nonstunted girls living in the shantytowns of S??o Paulo, Brazil
  • Article
  • Full-text available

August 2005

·

113 Reads

·

54 Citations

European Journal of Clinical Nutrition

Previous studies have shown that stunting increases the risk of obesity in developing countries, particularly among girls and women, but the underlying reasons are not known. This study aimed to investigate the relationship between stunting, weight gain, and resting metabolic rate. A prospective study was conducted over 36 months with girls from shantytowns in São Paulo, Brazil. A total of 15 stunted girls (S) were compared with 15 nonstunted (N) ones of similar weight for height ratio. Resting metabolic rate was measured using indirect calorimetry, and the socioeconomic status was determined by interviews in the household. In addition, body composition was measured by skinfold thickness, while the growth rate was calculated dividing the change in weight and the change in height by the follow-up period. The results of the present study, when combined, revealed that the S group had a lower resting metabolic rate throughout the follow-up period with the differences being significant at 24 and 36 months of follow-up, associated with an increase in the rate of weight gain and a decrease in lean mass, when compared to the N group. These changes are known to be risk factors for obesity and may help to explain the particularly higher prevalence of obesity in women in urban areas of developing countries.

Download

Swimming of pregnant rats at different water temperatures

September 2003

·

48 Reads

·

33 Citations

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology

We studied the chronic effect of exercise during water immersion, associated with thermal stress (water temperature at 22, 35 and 40 degrees C) at an intensity of 80% of maximal work load supported in pregnant rats (P) and non-pregnant female rats (NP). P and NP were subdivided into three subgroups according to water temperature during exercise (P22 and NP22; P35 and NP35; P40 and NP40). The animals were submitted to daily swimming sessions of 10-15 min, for 19 days of pregnancy (P) or experimental conditions (NP). Plasma concentration of triglycerides, cholesterol, glucose, total protein, albumin and corticosterone were determined 24 h after the last exercise session. Weight gain and rectal temperature pre- and post-swimming session were also determined. The offspring were examined just after caesarian section on the 20th day of pregnancy to check weight, length and litter size. Pregnant rats showed an increase of triglycerides, reduction of glycemia, total protein and albumin and cholesterol (at 35 degrees C) when compared to non-pregnant animals. Such effects probably lead to an adequate delivery of substrate to the fetus and prepare the mother for lactation. Daily thermal stress did not modify metabolic responses to exercise in pregnant rats. Results also show a deleterious effect on offspring when the mother is exposed daily to extreme temperatures during swimming. These results suggest that water temperature (cold and hot) in swimming have to be considered to avoid damage in fetal development.




Évaluation isocinétique du genou chez les patients atteints de polyarthrite rhumatoïde

December 2002

·

13 Reads

Revue du Rhumatisme

Objectives. Rheumatoid arthritis is a chronic inflammatory disease with a clinical picture of arthritis, muscle hypotrophy, loss of range of motion, loss of strength and disability. The objective of this study was to evaluate knees of patients with rheumatoid arthritis using an isokinetic dynamometer. Methods. Fifty patients with a diagnosis of rheumatoid arthritis and 50 control subjects were evaluated using an isokinetic dynamometer (Cybex 6.000) regarding the following parameters: peak torque, peak torque angle, power, total work, peak torque acceleration time, set total work, torque acceleration energy (‘explosion’) and endurance. Comparisons between rheumatoid arthritis and the control group, left side versus right side, flexors and extensors and the proportion between flexors and extensors were made. The subjects were also evaluated through the Health Assessment Questionnaire, visual and analogical scale of pain, EPM-ROM and goniometry of the knee. Results. The results showed that patients with rheumatoid arthritis have less strength than the control group (P


Table 1 Values referring to the maximum e€ort test 
Reduction of periodic leg movement in individuals with paraplegia following aerobic physical exercise

December 2002

·

75 Reads

·

46 Citations

Spinal Cord

According to the American Association of Sleep Disorders, periodic leg movements (PLM) are classified into the group of intrinsic sleep disorders. Studies on PLM in individuals with spinal cord injury are very recent. The objective of the present study was to assess the efficacy of aerobic training in reducing the index/score of PLM in individuals with complete spinal cord injury. Twelve male volunteers with complete spinal cord injury between T7 and T12 were submitted to six polysonographies (PSG Oxford Medilog SAC system; EEG, EMG and EOG: (1) basal night, (2) 12 h after a maximum effort test, (3) 36 h after a maximum effort test, (4) after 44 days of aerobic physical training, (5) 12 h after the last training session, and (6) 36 h after the last training session. All volunteers participated in a physical training program for 44 days using an arm crank ergometer. Data were analyzed statistically by the Wilcoxon test, with the level of significance set at alpha5%. The results demonstrated a statistically significant reduction (P < or = 0.05) in the comparison of first evaluation (35.1 PLM/h) with fifth (12.70 PLM/h) and sixth evaluation (18.5 PLM/h). This study suggests that a program of regular and systematized physical activity promotes an effective reduction of PLM in individuals with spinal cord injury.


Isokinetic evaluation of the knee in patients with rheumatoid arthritis

December 2002

·

74 Reads

·

35 Citations

Joint Bone Spine

Rheumatoid arthritis is a chronic inflammatory disease with a clinical picture of arthritis, muscle hypotrophy, loss of range of motion, loss of strength and disability. The objective of this study was to evaluate knees of patients with rheumatoid arthritis using an isokinetic dynamometer. Fifty patients with a diagnosis of rheumatoid arthritis and 50 control subjects were evaluated using an isokinetic dynamometer (Cybex 6.000) regarding the following parameters: peak torque, peak torque angle, power, total work, peak torque acceleration time, set total work, torque acceleration energy ('explosion') and endurance. Comparisons between rheumatoid arthritis and the control group, left side versus right side, flexors and extensors and the proportion between flexors and extensors were made. The subjects were also evaluated through the Health Assessment Questionnaire, visual and analogical scale of pain, EPM-ROM and goniometry of the knee. The results showed that patients with rheumatoid arthritis have less strength than the control group (P < 0.05); the extensors are stronger than the flexors (P < 0.05); no significant differences between the right and the left knee for rheumatoid arthritis and the control group were observed and the proportion between flexors and extensors is the same in both groups. We concluded that regarding the isokinetic parameters, the knees of subjects with rheumatoid arthritis are different from normal knees with decreased strength parameters, maintaining the proportion between flexors and extensors with a global loss of strength in the segment, excluding the high speeds in some of the parameters.


Knee performance after anterior cruciate ligament reconstruction

August 2002

·

69 Reads

·

41 Citations

Isokinetics and Exercise Science

The aim of this study was to determine differences in isokinetic performance, hop tests, range of motion and thigh circumference between the involved and uninvolved leg in patients after 4, 5, 6 and 8 months after anterior cruciate ligament (ACL) reconstruction and to investigate the possible correlation between the different evaluation methods. Fourteen male subjects submitted to intra-articular reconstruction of the anterior cruciate ligament with patellar tendon graft. All parameters improved from the 4th to the 8th month post-op. The deficits were more pronounced for the quadriceps than for the hamstrings, which regained full function at 5 months. Quadriceps performance and thigh circumference were impaired even after 8 months. According to the Lysholm Score, all subjects scored at least as good function and 54% had excellent results. There was a positive correlation between quadriceps performance and both single and triple hops (0.51-0.63), whilst for the harmstrings the correlations were weak (0.32-0.44). We conclude that: 1) Individuals with anterior cruciate ligament injury present quadriceps weakness even after 8 months of the reconstructive surgery using patellar tendon graft; 2) when an isokinetic dynamometer is not available, horizontal impulse tests can be used to evaluate quadriceps deficiency; 3) thigh circumference should not be used as a measurement to predict muscle performance; 4) the Lysholm Score is not sensitive to detect limitations in muscle performance.



Citations (24)


... Morris et al. (42) confirmed these results and found deficits in maximal torque and rate of torque development at various knee joint angles in athletes with ACLR using HT autograft technique compared to the contralateral limb. These findings results are consistent with previous studies indicating significant deficits in BTB reconstructions compared to the contralateral side and support the ongoing discourse on optimal graft selection for ACLR (43). ...

Reference:

A comparative analysis of autograft choices of anterior cruciate ligament reconstruction and their effects on muscle strength and joint biomechanics
Knee performance after anterior cruciate ligament reconstruction
  • Citing Article
  • August 2002

Isokinetics and Exercise Science

... Complete spinal cord lesions result in a loss of motor and sensory functions conducted via afferent and efferent spinal pathways and also in an interruption of pathways from the brain to the peripheral sympathetic nervous system; this results in pathological changes of the sympathetic innervation depending on anatomic organization of the pathways in the spinal cord (4,6,37,38). For these reasons, spinal cord injury (SCI) leads to cardiovascular and metabolic alterations at rest and during exercise (10,11,17,25,29,38). ...

PLASMA LEVEL OF CATHECOLAMINES IN PARAPLEGICS 850
  • Citing Article
  • May 1996

Medicine and Science in Sports and Exercise

... Peripheral neuropathies also do not result in markedly increased serum muscle enzyme activity. 2 Polymyositis can cause initial stiffness, awkward gait, and muscle pain as observed in this cat, and polymyositis can produce dramatic increases in serum muscle enzyme activity. However, the progression to a flaccid lower motor neuron paralysis is not typical of inflammatory myopathy. ...

TRAINING AND NEUROMUSCULAR DISEASE
  • Citing Article
  • May 1998

Medicine and Science in Sports and Exercise

... No Brasil, essas doenças ocorrem nas diversas regiões do país, seja em zona rural ou urbana e em diferentes faixas etárias (Monteiro et al., 2009;Fonseca et al., 2010). Essas afecções estão correlacionadas com níveis socioeconômicos mais baixos e condições precárias de saneamento básico, representando um flagelo, sobretudo para as populações mais pobres (Grillo et al., 2000). ...

Influência das condições socioeconômicas nas alterações nutricionais e na taxa de metabolismo de repouso em crianças escolares moradoras em favelas no município de São Paulo

Revista da Associação Médica Brasileira

... The body weight was reduced -was less in mostly Ex offspring, capillary/fibre ratio was different compared to control inactive group. The effect of Ex was shown to depend of the relative work load applied to the mother, which was particularly marked at high work loads [38]. ...

Effect of exercise during pregnancy, graded as a percentage of aerobic capacity: Maternal and fetal responses of the rat
  • Citing Article
  • February 1991

Comparative Biochemistry and Physiology Part A Physiology

... To date, the preponderance of caffeine and exercise performance literature has utilized anhydrous caffeine (in a capsule) [40][41][42][43][44][45][46] for simpler dose standardization and placebo creation. There is also a growing body of literature studying the effects of using alternate delivery methods of caffeine during exercise [5] such as coffee [18,[47][48][49][50][51][52][53][54][55][56], energy drinks, herbal formulas [57] and 'pre-workout' formulas, among others. A review of alternate caffeine forms may be found in the Alternative caffeine sources section and Tables 4, 5, 6, 7 and 8. ...

Effects of caffeine on the rate of perceived exertion
  • Citing Article
  • February 1990

Brazilian Journal of Medical and Biological Research

... In this study, most of the owners who perceived their dogs to be low-heat-tolerant animals also reported their dogs panting. During panting, dogs increase minute ventilation by increasing their respiratory rate and decreasing their tidal volume, a type of shallow breathing that normally preserves alveolar gas exchange [23]. However, exposure of dogs to extreme hot conditions, such as during walks at times of high radiant heat load, can turn panting to thermal hyperventilation and increase the susceptibility of dogs to developing respiratory alkalosis and heat stroke [22,24]. ...

Aerobic training effects on maximum oxygen consumption, lactate threshold and lactate disappearance during exercise recovery of dogs
  • Citing Article
  • February 1989

Comparative Biochemistry and Physiology Part A Physiology

... This is contrary to the VO 2 drift (i.e., slow component) that might be expected. The VO 2 slow component is correlated with lactate concentration [32]. Lactate concentration decreased throughout our exercise test indicating our participants were most likely working below their lactate threshold. ...

Oxygen consumption and ventilation during constant-load exercise in runners and cyclists
  • Citing Article
  • April 1989

The Journal of sports medicine and physical fitness

... The addition of specific cardiac abnormalities did not retrieve relevant additional results and were therefore excluded from our final query b indicates that word variations of the search term were also searched unable to obtain full text or detailed abstracts of 15 possibly relevant articles. Twelve of these articles were identified in the original search, whilst the other 3 were found through the related articles search (Additional file 1: Table S4, [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]). We identified a total of 264 published cases of SMA patients with cardiac pathology. ...

Cardiorespiratory responses to exercise in patients with spinal muscular atrophy and limb-girdle dystrophy
  • Citing Article
  • February 1987

Brazilian Journal of Medical and Biological Research

... This limitation leads us to think that while it is absent in patients at rest, impairment of the respiratory muscles could be revealed by more intense stimulation during physical exercise. This kind of ventilatory limitation is found in the literature with regard to dystrophic patients [11,24,25] or persons suffering from metabolic myopathies [13]. Screening of them is possible through measurement of maximal inspiratory and expiratory pressures and by means of a muscle exercise test objectifying increased maximal ventilation. ...

Breathing pattern during exercise in myopathic subjects
  • Citing Article
  • February 1987

Brazilian Journal of Medical and Biological Research