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Registros recuperados: 11
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Catecholamine response to exercise in individuals with different levels of paraplegia BJMBR
Steinberg,L.L.; Lauro,F.A.A.; Sposito,M.M.M.; Tufik,S.; Mello,M.T.; Naffah-Mazzacoratti,M.G.; Cavalheiro,E.A.; Silva,A.C..
The purpose of this study was to investigate the effect of the level of injury on the serum level of norepinephrine (Nor) and epinephrine (Epi) at rest and after maximal exercise in individuals with paraplegia. Twenty-six male spinal cord-injured subjects with complete paraplegia for at least 9 months were divided into two groups of 13 subjects each according to the level of injury, i.e., T1-T6 and T7-T12. Serum Nor and Epi concentrations were measured by HPLC-ECD, at rest (PRE) and immediately after a maximal ergospirometric test (POST). Statistical analysis was performed using parametric and non-parametric tests. Maximal heart rate, peak oxygen uptake, and PRE and POST Nor were lower in the T1-T6 than in the T7-T12 group (166 ± 28 vs 188 ± 10 bpm; 18.0 ±...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catecholamines; Paraplegia; Exercise; Norepinephrine; Epinephrine; Spinal cord injury.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000800007
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Effect of L-carnitine on exercise performance in patients with mitochondrial myopathy BJMBR
Gimenes,A.C.; Bravo,D.M.; Nápolis,L.M.; Mello,M.T.; Oliveira,A.S.B.; Neder,J.A.; Nery,L.E..
Exercise intolerance due to impaired oxidative metabolism is a prominent symptom in patients with mitochondrial myopathy (MM), but it is still uncertain whether L-carnitine supplementation is beneficial for patients with MM. The aim of our study was to investigate the effects of L-carnitine on exercise performance in MM. Twelve MM subjects (mean age±SD=35.4±10.8 years) with chronic progressive external ophthalmoplegia (CPEO) were first compared to 10 healthy controls (mean age±SD=29±7.8 years) before they were randomly assigned to receive L-carnitine supplementation (3 g/daily) or placebo in a double-blind crossover design. Clinical status, body composition, respiratory function tests, peripheral muscle strength (isokinetic and isometric torque) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exercise tolerance; Muscle strength; Mitochondrial myopathy; L-carnitine supplementation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000400354
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Effects of type of physical exercise and leisure activities on the depression scores of obese Brazilian adolescent girls BJMBR
Stella,S.G.; Vilar,A.P.; Lacroix,C.; Fisberg,M.; Santos,R.F.; Mello,M.T.; Tufik,S..
Several studies have indicated that depressive states may lead to hypokinesia with diminished metabolic rate and energy use. Hypokinesia associated with certain eating behaviors may lead to an unfavorable energy balance that can contribute to the emergence and prevalence of obesity among children and adults. The purpose of the present study was to examine the possibility of reducing depression inventory scores in female adolescents with third-degree obesity while testing the effectiveness of different exercise programs in reducing anxiety and depression scores. The sample consisted of 40 female subjects (mean age 16 ± 1.56 years) divided into 4 groups (aerobic training, anaerobic training, leisure activities, and control). Subjects had a body mass index of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adolescents; Physical exercise; Leisure activity; Obesity.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100017
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Relationship between the quality of life and the severity of obstructive sleep apnea syndrome BJMBR
Lopes,C.; Esteves,A.M.; Bittencourt,L.R.A.; Tufik,S.; Mello,M.T..
The effects of sleep disorders on the quality of life (QOL) have been documented in the literature. Excessive sleepiness and altered circadian rhythms may negatively affect ability to learn, employment, and interpersonal relations, and directly degrade QOL. The objective of the present study was to evaluate the impact of obstructive sleep apnea syndrome of varying severity on QOL. The study was conducted on 1892 patients aged 18 years or older referred by a physician to the Sleep Institute, São Paulo, with complaints related to apnea (snoring, excessive daytime sleepiness, hyperarousal, and fatigue). They were submitted to overnight polysomnography for the diagnosis of sleep disorders from August 2005 through April 2006. The patients completed the Epworth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical activity; Obstructive sleep apnea syndrome; Quality of life; Sleepiness.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008001000013
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Relationship between work rate and oxygen uptake in mitochondrial myopathy during ramp-incremental exercise BJMBR
Gimenes,A.C.; Neder,J.A.; Dal Corso,S.; Nogueira,C.R.; Nápolis,L.; Mello,M.T.; Bulle,A.S.; Nery,L.E..
We determined the response characteristics and functional correlates of the dynamic relationship between the rate (Δ) of oxygen consumption ( <img border=0 width=11 height=13 src="548_files/image001.gif" v:shapes="_x0000_i1188">O2) and the applied power output (work rate = WR) during ramp-incremental exercise in patients with mitochondrial myopathy (MM). Fourteen patients (7 males, age 35.4 ± 10.8 years) with biopsy-proven MM and 10 sedentary controls (6 males, age 29.0 ± 7.8 years) took a ramp-incremental cycle ergometer test for the determination of the <img border=0 width=11 height=13 src="548_files/image001.gif" v:shapes="_x0000_i1189">O2 on-exercise mean response time (MRT) and the gas exchange threshold (GET). The Δ<img border=0...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Muscular diseases; Oxygen consumption; Cardiopulmonary exercise testing; Skeletal muscle; Pathophysiology; Mitochondrial myopathy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000400013
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Resistance exercise improves hippocampus-dependent memory BJMBR
Cassilhas,R.C.; Lee,K.S.; Venâncio,D.P.; Oliveira,M.G.M.; Tufik,S.; Mello,M.T..
It has been demonstrated that resistance exercise improves cognitive functions in humans. Thus, an animal model that mimics this phenomenon can be an important tool for studying the underlying neurophysiological mechanisms. Here, we tested if an animal model for resistance exercise was able to improve the performance in a hippocampus-dependent memory task. In addition, we also evaluated the level of insulin-like growth factor 1/insulin growth factor receptor (IGF-1/IGF-1R), which plays pleiotropic roles in the nervous system. Adult male Wistar rats were divided into three groups (N = 10 for each group): control, SHAM, and resistance exercise (RES). The RES group was submitted to 8 weeks of progressive resistance exercise in a vertical ladder apparatus,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical exercise; Passive avoidance; Insulin-like growth factor 1; Resistance training; Hippocampus; Memory.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001200015
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Sleep, ageing and night work BJMBR
Pires,M.L.N.; Teixeira,C.W.; Esteves,A.M.; Bittencourt,L.R.A.; Silva,R.S.; Santos,R.F.; Tufik,S.; Mello,M.T..
Studies have shown that the frequency or worsening of sleep disorders tends to increase with age and that the ability to perform circadian adjustments tends to decrease in individuals who work the night shift. This condition can cause consequences such as excessive sleepiness, which are often a factor in accidents that occur at work. The present study investigated the effects of age on the daytime and nighttime sleep patterns using polysomnography (PSG) of long-haul bus drivers working fixed night or day shifts. A total of 124 drivers, free of sleep disorders and grouped according to age (<45 years, N = 85, and ≥45 years, N = 39) and PSG timing (daytime (D) PSG, N = 60; nighttime (N) PSG, N = 64) participated in the study. We observed a significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sleep; Shift work; Night work; Aging; Polysomnography; REM; Slow wave sleep (SWS).
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000900011
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Sleep disorders, sleepiness and traffic safety: a public health menace BJMBR
Pandi-Perumal,S.R.; Verster,J.C.; Kayumov,L.; Lowe,A.D.; Santana,M.G.; Pires,M.L.N.; Tufik,S.; Mello,M.T..
Sleep disorders are not uncommon and have been widely reported throughout the world. They have a profound impact on industrialized 24-h societies. Consequences of these problems include impaired social and recreational activities, increased human errors, loss of productivity, and elevated risk of accidents. Conditions such as acute and chronic insomnia, sleep loss, excessive sleepiness, shift-work, jet lag, narcolepsy, and sleep apnea warrant public health attention, since residual sleepiness during the day may affect performance of daily activities such as driving a car. Benzodiazepine hypnotics and zopiclone promote sleep, both having residual effects the following day including sleepiness and reduced alertness. In contrast, the non-benzodiazepine...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sleep disorders; Sleepiness; Automobile and truck drivers; Automobile traffic; Public health.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000700003
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Sleep habits and complaints of adults in the city of São Paulo, Brazil, in 1987 and 1995 BJMBR
Pires,M.L.N.; Benedito-Silva,A.A.; Mello,M.T.; Del Giglio,S.; Pompeia,C.; Tufik,S..
This study compares the prevalence of complaints of insomnia, excessive diurnal sleepiness, parasomnias, and sleep habits of the adult population in the city of São Paulo, Brazil, estimated in surveys carried out in 1987 and 1995. Representative samples of 1000 adult residents per survey were interviewed using a validated structured sleep questionnaire, the "UNIFESP Sleep Questionnaire". Difficulty maintaining sleep, difficulty initiating sleep and early morning awakening, occurring at least three times a week, were reported in 1987 and 1995, by 15.8/27.6, 13.9/19.1, and 10.6/14.2% of the interviewees, respectively, significantly increasing throughout time. These sleep problems were more often found among women. Frequencies of excessive diurnal sleepiness...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sleep; Sleep disorders; Insomnia; Diurnal sleepiness; Parasomnias; Epidemiology; Sleep habits.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007001100011
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Sleep patterns and sleep-related complaints of Brazilian interstate bus drivers BJMBR
Mello,M.T.; Santana,M.G.; Souza,L.M.; Oliveira,P.C.S.; Ventura,M.L.; Stampi,C.; Tufik,S..
Sleep-related complaints have become a highlight for physicians as well as public health administrators. Studies of sleep patterns and sleep-related complaints of shift workers have been useful in minimizing reduction in the quality of life due to the warping of the sleep-wake cycle. The objective of the present study was to assess patterns of sleep, sleep-related complaints as well as physical activity and scoring rates for depression and anxiety in interstate bus drivers. Data were obtained with a sleep questionnaire, with the Beck inventory for depression, and the State-Trait Anxiety Inventory (STAI). A total of 400 interstate bus drivers from the northern, southern, central-western and south-eastern regions of Brazil were interviewed. Sixty percent of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sleep; Sleep-related disorders; Shift workers; Depression; Anxiety; Physical activity.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000100010
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Strength and power training did not modify cardiovascular responses to aerobic exercise in elderly subjects BJMBR
Queiroz,A.C.C.; Chehuen,M.R.; Costa,L.A.R.; Wallerstein,L.F.; Mello,M.T.; Ugrinowitsch,C.; Forjaz,C.L.M..
Resistance training increases muscle strength in older adults, decreasing the effort necessary for executing physical tasks, and reducing cardiovascular load during exercise. This hypothesis has been confirmed during strength-based activities, but not during aerobic-based activities. This study determined whether different resistance training regimens, strength training (ST, constant movement velocity) or power training (PT, concentric phase performed as fast as possible) can blunt the increase in cardiovascular load during an aerobic stimulus. Older adults (63.9 ± 0.7 years) were randomly allocated to: control (N = 11), ST (N = 13, twice a week, 70-90% 1-RM) and PT (N = 15, twice a week, 30-50% 1-RM) groups. Before and after 16 weeks, oxygen uptake (VO2),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aging; Resistance training; Maximal exercise test; Aerobic exercise.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000900006
Registros recuperados: 11
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