Muscular Strength Exercise Research Articles

The Relationships Between Recreational Drug Abuse and School Records Among Korean Adolescents

ABSTRACTBackground: Recreational drug abuse control has long been a major goal of global health and social welfare organizations. Objective: The purpose of this study was to examine the possible associations between recreational drug abuse and Korean adolescents’ school records. Methods: In 2012, 74,186 seventh- through twelfth-grade students participated in the Eighth Korea Youth Risk Behavior Web-based Survey. Associations between recreational drug abuse and school records were assessed using multivariate logistic regression analysis after adjusting for the covariates of age, body mass index, frequency of smoking, frequency of alcohol consumption, frequency of breakfast consumption, parents’ educational levels, family economic status, mental stress, physical activity frequency, and participation in muscular strength exercises. Results: The odds ratios (with 95% confidence intervals) for males who had used or were using recreational drugs and who had achieved average or higher than average school achievement according to their records, compared to males who had never used recreational drugs, were as follows: “almost never,” 1.026 (0.777–1.354; p = 0.858); “past use but no current use,” 0.990 (0.568–1.727; p = 0.972); and “currently using,” 0.732 (0.424–1.263; p = 0.262). The odds ratios (with 95% confidence intervals) for females were as follows: “almost never,” 0.804 (0.560–1.153; p = 0.235); “past use but no current use,” 0.771 (0.448–1.326; p = 0.347); and “currently using,” 0.932 (0.276–3.148; p = 0.910). Conclusions: Recreational drug abuse was associated neither positively nor negatively with Korean adolescents’ school records.

Effects of AquaTitan Bracelet on Quadriceps Muscles Recovery after Fatiguing Muscular Strength and Endurance Exercise

Effects of AquaTitan Bracelet on Quadriceps Muscles Recovery after Fatiguing Muscular Strength and Endurance Exercise

The Study on the Isokinetic Muscular Strength and Anaerobic Exercise Capacity of Visually Impaired and Non-Disabled National Judo Athletes.

The Study on the Isokinetic Muscular Strength and Anaerobic Exercise Capacity of Visually Impaired and Non-Disabled National Judo Athletes.

우리나라 청소년의 건강행태와 구강질환증상의 관련성

Objectives: The purpose of the study was to investigate the relationship between health behavior and oral symptoms in Korean adolescents. Methods: The subjects were 72,060 adolescents who were selected from the web-based survey of the 10th (2014) Korean Youth Risk Behavior of Korean Center for Disease Control. Data were analyzed by PASW statistics 18.0. A web-based self-reported questionnaire was completed by 74,167 middle and high school students. The subjects consisted of 36,470 boy students (52.2%) and 35,590 girl students (47.8%) from 400 middle schools and 400 high schools. Results: Multiple logistic regression analysis revealed that experience of oral symptoms were related with sex, age, academic achievement, economic status, alcohol drinking, moderate physical activity, muscular strength exercises, walking, fruit consumption, milk consumption, fast food consumption, snack consumption, daily tooth brushing frequency, use of fluoride toothpaste, school based oral health education, dental sealant and dental scaling. Conclusions: There were close relationship between heath behavior, oral health behavior, and experience of oral symptoms. To improve the health promotion for the adolescents, oral health program development and primary prevention strategy must be established.

Effect of the Muscular Strength Exercise and Massage on Muscle Injury Marker and IGF-1

This experiment is to identify the effect of aid combined with strength exercise and massage affecting muscle injury marker and insulin-like growth factor: IGF-1. Therefore, there were Experimental Group (EG) and Control Group (CG) to identify the effect of the experimental aid. Each aided for 60 minutes, 40 minutes of strength exercise and 20 minutes of massage program, total 24 strength exercises, 3 times a week, for 8 weeks. Through this process we could see there is interactive effect on ammonia, phosphorus, creatine kinase, and lactate dehydrogenase, which are muscle injury markers. There is also interactive effect on IGF-1, which is insulin-like growth factor. As a result, aid combined with strength exercise and massage has a positive effect on muscle injury marker and IGF-1.

Rock Climbing for Promoting Physical Activity in Youth.

Prevalence of overweight and obesity in youth has steadily increased over the last decade, although it appears to have currently stabilized. Physical inactivity is a major contributor to this obesity epidemic, and more than half of American youth do not meet physical activity recommendations. Rock climbing and bouldering require both aerobic and anaerobic fitness, with the metabolic cost comparable to moderate to vigorous physical activity in adults. Minimal data on youth climbers exist, yet climbing is extremely popular with youth, and thus the sport may be a viable option for decreasing the prevalence of obesity. Available data show that rock climbing can provide youth with muscular strength and endurance building exercise, and possibly improve flexibility. In addition, rock climbing has the potential to provide youth with moderate levels of physical activity according to recommended guidelines. Nine peer reviewed articles are included in this review, as these are the articles specifically associated with youth climbing and health-related fitness. Due to limited research in this area, no articles were excluded if they were related to health-related fitness and youth and rock climbing/bouldering. This review aims to systematically address the impact of rock climbing and bouldering on health-related fitness in youth.

Non-Traditional Muscular Strength and Endurance Activities for Elementary and Middle School Children

Over the past decade many muscular strength and endurance routines have been introduced to children and adults toward improving overall health and fitness. When performed correctly, there are countless benefits to performing weight bearing resistance-type exercises to develop the upper, lower, and core areas of the body. The National Association for Sport and Physical Education (NASPE, 2004) has indicated that quality physical education programs must address and require students to participate in muscular strength and endurance activities on a regular basis. In a time when many schools are currently experiencing significant budgetary cuts and/or restrictions, physical educators have come upon a challenging era to provide or replace various types of exercise equipment targeting muscular strength and endurance. The purpose of this article is to provide low-cost or no-cost exercises using milk jugs, surgical tubing, and playground apparatus that will improve muscular strength and endurance for elementary-age and middle school-age children. Specifically, 20 examples of muscular strength and endurance exercises are provided, targeting improved personal health. All activities within the article align with Standards 3 and 4 of a quality physical education program, as indicated by the National Association for Sport and Physical Education (NASPE, 2004).

Association between cigarette consumption and academic achievement in Korean adolescents

Aims: The purpose of this study was to examine whether smoking frequency and cigarette consumption are related to academic achievement in Korean adolescents. Method: Data from the Seventh Korea Youth Risk Behavior Web-based Survey (KYRBWS-VII) administered in 2011 were analyzed; 75,643 adolescents from the first year of middle school through the third year of high school participated in the survey. We used multivariate logistic regression analysis to investigate the association in question after adjusting for variables such as age, body mass index, frequency of drinking, frequency of breakfast consumption, parents’ education level, family economic status, mental stress and the frequency of vigorous physical activity (PA), moderate PA and muscular strength exercises. Results: The odds ratios (ORs) for achieving average or higher academic achievement in boys compared with those who never smoked and stratified by the frequency of smoking were as follows: 1–2 day(s) per month, 0.594 (p < 0.001); 3–5 days per month, 0.571 (p < 0.001); 6–9 days per month, 0.529 (p < 0.001); 10–19 days per month, 0.472 (p < 0.001); 20–29 days per month, 0.491 (p < 0.001) and every day, 0.342 (p < 0.001). For girls, the ORs for achieving average or higher academic achievement compared with those who never smoked and stratified by the frequency of smoking were as follows: 1–2 day(s) per month, 0.482 (p < 0.001); 3–5 days per month, 0.409 (p < 0.001); 6–9 days per month, 0.648 (p = 0.037); 10–19 days per month, 0.723 (p = 0.032); 20–29 days per month, 0.543 (p < 0.001) and every day, 0.433 (p < 0.001). The ORs in boys for achieving average or higher academic achievement compared with those who never smoked and stratified by cigarette consumption were as follows: <1 cigarette per day, 0.656 (p < 0.001); 1 cigarette per day, 0.541 (p < 0.001); 2–5 cigarettes per day, 0.446 (p < 0.001); 6–9 cigarettes per day, 0.375 (p < 0.001); 10–19 cigarettes per day, 0.281 (p < 0.001) and ≥20 cigarettes per day, 0.340 (p < 0.001). For girls, the ORs for achieving average or higher academic achievement compared with those who never smoked and stratified by cigarette consumption were as follows: <1 cigarette per day, 0.550 (p < 0.001); 1 cigarette per day, 0.507 (p < 0.001); 2–5 cigarettes per day, 0.549 (p < 0.001); 6–9 cigarettes per day, 0.356 (p < 0.001); 10–19 cigarettes per day, 0.353 (p < 0.001) and ≥20 cigarettes per day, 0.729 (p = 0.242). Conclusion: There are certain indicators that smoking negatively influences educational achievement in Korean adolescents. To improve academic achievement, it is recommended that adolescents do not smoke.

Impact of strength training exercise on secondary prevention of childhood obesity; an intervention within the school system

The physical exercise is an important therapeutic tool to prevent and treat obesity, as well as reducing metabolic alterations and the risk of non-communicable diseases. To evaluate the impact of a strength training exercise intervention within the school system, this includes muscular strength exercise, dietary education and psychological support in obese children. We worked with 120 obese schoolchildren, between 8 and 13 years, recruited from 3 schools. Group 1 (n = 60) participated in the intervention, which included physical exercise, dietary education, and psychological support, for 3 months. Group 2 (n = 60) received only the educational intervention and psychological support for the first 3 months, and then received the exercise intervention from months 3 to 6. Participants were evaluated for BMI, waist circumference, body fat, presence of metabolic syndrome and cardiovascular risk factors. At 3 months, there were significant differences between the groups for change in BMI z-score, waist circumference, and body fat as well as prevalence of metabolic syndrome, abdominal obesity, hypertriglyceridemia, and fasting hyperglycemia. In group 1, these parameters decreased and increased, in group 2. From months 3 to 6, Group 2 showed a significant decrease in abdominal obesity, high blood pressure, and hypertriglyceridemia, while Group 1 showed a significant increase in high blood pressure and no change in other cardiovascular risk factors. This study demonstrates the positive impact of a strength training physical exercise program on reduction of body fat, metabolic syndrome and cardiovascular risk factors. This study supports the use of exercise as a treatment for obesity and its comorbidities in schoolchildren.

Association of smoking frequency and cigarette consumption with obesity in Korean adolescents

The purpose of this study was to examine whether smoking frequency and cigarette consumption were related with obesity in Korean adolescents. A total of 72,399 adolescents from 1st grade middle-school to 3rd grade high-school participated in the 5th Korea Youth Risk Behavior Web-based Survey (KYRBWS) project in 2009. The relationship between the body mass index (BMI), smoking frequency, and cigarette consumption was assessed using multivariate logistic regression analysis after adjusting for covariate variables like age, frequency of alcohol consumption and severe alcohol intoxication, amount of alcohol consumed, parents' education level, economic status, sedentary activities during the week, mental stress, sleep duration, frequency of vigorous and moderate physical activities, and muscular strength exercises during the week. We concluded that both smoking frequency and cigarette consumption had positive effects with regard to weight loss in adolescents. However, because smoking has negative side effects on general health, including an increase in abdominal fat and morbidity rates of obesity-related diseases, we recommend that adolescents should not smoke (Tab. 3, Ref. 26).

Effects of calcium intake, milk and dairy product intake, and blood vitamin D level on osteoporosis risk in Korean adults: analysis of the 2008 and 2009 Korea National Health and Nutrition Examination Survey

This study was performed to determine the effects of dietary calcium (Ca) intake, milk and dairy product intake, and serum vitamin D level on bone mineral density. The survey data from the 2008-2009 Korea National Health and Nutrition Examination Survey (KNHANES) for adults (3,819 males, 5,625 females) aged > 20 years were examined; osteoporosis was defined according to the standards for Asian populations (T-score < -2.5). The risk for osteoporosis significantly decreased as Ca intake increased; this effect persisted (quartile 4 vs. quartile 1 of Ca intake: odds ratio [OR] 0.66; 95% confidence interval [CI]: 0.50-0.87) even after adjustment for gender, age, and other factors (body mass index, serum vitamin D, menstruation, female hormone intake, menopausal status, and the number of days per week of muscular strength exercise). Additionally, the risk for osteoporosis significantly decreased as the Ca/P ratio increased (quartile 4 vs. quartile 1: OR 0.76; 95% CI: 0.58-0.98). The degree of risk was 0.96 (0.66-1.38) in those who consumed < 1 portion of milk or dairy products daily, and 0.71 (0.53-0.96) in those who consumed > 1 portion per day, compared with those who had zero intake. The risk for osteoporosis significantly decreased as the serum 25(OH) vitamin D level increased. From these results, we advocate an increase in Ca, milk, and dairy product intake, and that serum 25(OH) vitamin D levels be maintained within the normal range, for the maintenance of bone health and the prevention of osteoporosis in adults.

Is Physical Exercise with a Support Group of Elderly Effective for Chronic Musculoskeletal Pain?

ObjectiveEvaluate the degree of clinical benefit of an exercising program performed by elderly patients with chronic pain.MethodsThis is an uncontrolled prospective longitudinal study that enrolled subjects with musculoskeletal pain who were voluntarily participating in the YMCA's elderly exercise program. Each session started with a 15-minute meeting to talk about their daily lives. Afterwards, they performed an hour session of flexibility, muscular strength, and aerobic exercises. There were four assessments that included a demographic data questionnaire, Visual Analog Scale [VAS] for pain intensity, the Health Assessment Questionnaire [HAQ], and the Medical Outcome Study Short Form-36 Health Survey [SF-36].ResultsThirty-four subjects, all over 60 years old, with 83 percent female and 17 percent male were studied. The pain VAS showed a significant improvement in time 1 and 2 in relation to other times. Significant improvement in the HAQ and the functional capacity [P < 0.0001], pain [P < 0.0001], genera...

Land- and water-based exercise intervention in women with fibromyalgia: the al-andalus physical activity randomised controlled trial

BackgroundThe al-Andalus physical activity intervention study is a randomised control trial to investigate the effectiveness of a land- and water-based exercise intervention for reducing the overall impact of fibromyalgia (primary outcome), and for improving tenderness and pain-related measures, body composition, functional capacity, physical activity and sedentary behaviour, fatigue, sleep quality, health-related quality of life, and cognitive function (secondary outcomes) in women with fibromyalgia.Methods/DesignOne hundred eighty women with fibromyalgia (age range: 35-65 years) will be recruited from local associations of fibromyalgia patients in Andalucía (Southern Spain). Patients will be randomly assigned to a usual care (control) group (n = 60), a water-based exercise intervention group (n = 60) or a land-based exercise intervention group (n = 60). Participants in the usual care group will receive general physical activity guidelines and participants allocated in the intervention groups will attend three non-consecutive training sessions (60 min each) per week during 24 weeks. Both exercise interventions will consist of aerobic, muscular strength and flexibility exercises. We will also study the effect of a detraining period (i.e., 12 weeks with no exercise intervention) on the studied variables.DiscussionOur study attempts to reduce the impact of fibromyalgia and improve patients' health status by implementing two types of exercise interventions. Results from this study will help to assess the efficacy of exercise interventions for the treatment of fibromyalgia. If the interventions would be effective, this study will provide low-cost and feasible alternatives for health professionals in the management of fibromyalgia. Results from the al-Andalus physical activity intervention will help to better understand the potential of regular physical activity for improving the well-being of women with fibromyalgia.Trial registrationClinicalTrials.gov ID: NCT01490281

Association between weight status and recreational drug abuse in Korean adolescents

AbstractThe purpose of this study was to investigate the relationship between weight status and recreational drug use in Korean adolescents. A total of 72,399 adolescent students (38,152 boys and 34,247 girls) from the middle first to high third grade participated in the 5th Korea Youth Risk Behaviour Web-based Survey (KYRBWS-V) project in 2009. They were assessed for body mass index (BMI) and recreational drug abuse. The associations between BMI and recreational drug use were examined using multivariable logistic regression analysis after adjusting for the covariate variables of age, smoking frequency and cigarette consumption, frequency of alcohol consumption and severe alcohol intoxication, amount of alcohol consumed, parents’ education level, economic status, sedentary activities during the week, mental stress, sleep duration, frequency of vigorous and moderate physical activities, and muscular strength exercises during the week. For boys, the odds ratio (OR) (95% confidence interval [CI]) between overweight and drug use were 0.990 (0.723–1.356; p = 0.950) for almost none, 0.939 (0.521–1.693; p = 0.834) for past use, and 0.791 (0.385–1.624; p = 0.523) for present use. The OR (95% CI) between obesity and drug use was 0.731(0.508–1.052; p = 0.091) for almost none, 0.755 (0.389–1.465; p = 0.407) for past use, and 0.701 (0.314–1.565; p = 0.386) for present use. For girls, the OR (95% CI) between overweight and drug use was 1.112 (0.702–1.763; p = 0.650) for almost none, 1.103 (0.464–2.619; p = 0.825) for past use, and 0.927 (0.267–3.218; p = 0.905) for present use. The OR (95% CI) between obesity and drug abuse was 0.594 (0.261–1.352; p = 0.215) for almost none, 1.318 (0.462–3.764; p = 606) for past use, and &lt;0.001(&lt;0.001–&lt;0.001; p = 0.998) for present use. We concluded that recreational drug use had no correlation with overweight and obesity in Korean adolescents.

Relationship between obesity in Korean adolescents and the frequency of alcohol consumption, the amount of alcohol consumed, and the frequency of severe alcohol intoxication

The purpose of this study is to determine whether the frequency of alcohol consumption, the amount of alcohol consumed, and the frequency of severe alcohol intoxication are related with obesity in Korean adolescents. In 2009, 72,399 students from the 7th to 12th grades participated in the 5th Korea Youth Risk Behavior Web-based Survey (KYRBWS-V) project. Multiple logistic regression analyses were used to assess whether body mass index (BMI) was associated with the frequency of alcohol consumption, the amount of alcohol consumed, and the frequency of severe alcohol intoxication, after controlling for covariate variables such as age, parent's education level, household economic status, frequency of vigorous and moderate physical activities, and frequency of muscular strength exercises during the week, sedentary lifestyle during the week, mental stress, and sleep duration. No relationship was observed between the frequency of alcohol consumption and body weight in adolescents. However, for boys, the odds ratio (95% confidence interval [CI]) between becoming overweight and the amount of alcohol consumed was 0.678 (range, 0.534-0.862; p = 0.002) for 2 to <3 bottles of beer and 0.810 (range, 0.674-0.973; p = 0.025) for 3 to <4 bottles of beer. The odds ratio (95% CI) between becoming obese and the amount of alcohol consumed was 0.794 (range, 0.653-0.964; p = 0.020) for 3 to <4 bottles of beer and that between becoming obese and the frequency of severe alcohol intoxication was 0.758 (range, 0.598-0.959; p = 0.021) when alcohol was consumed 1-2 times per month. For girls, the odds ratio (95% CI) between becoming overweight and the amount of alcohol consumed was 0.752 (range, 0.579-0.978; p = 0.033) for 3 to <4 bottles of beer and that between becoming obese and the amount of alcohol consumed was 1.753 (range, 1.033-2.972; p = 0.037) for ≥4 bottles of beer. We conclude that there is no relationship between the frequency of alcohol consumption and becoming overweight or obese. Although weight gain and obesity in boys and girls due to moderate consumption of alcohol are less prevalent, high alcohol consumption can increase weight gain in girls.:

Effects of leg strength and bicycle ergometry exercise on cardiovascular deconditioning after 30-day head-down bed rest

The purpose of this study is to determine if the intermittent leg muscular strength exercise and bicycle ergometry exercise could attenuate cardiovascular deconditioning induced by prolonged −6° head-down bed rest (HDBR). Fifteen male subjects were randomly allocated into group A ( n=5, 30 days HDBR without exercise), group B ( n=5, 30 days HDBR with leg muscular strength exercise) and group C ( n=5, 30 days HDBR with bicycle ergometry exercise). The orthostatic tolerance (OT) was determined by +75°/20 min head-up tilt (HUT) test and the submaximal exercise capacity was determined by bicycle ergometry before and after HDBR. The results were as follows: (1) Compared with that before HDBR, OT time decreased dramatically by 57.6% ( p<0.001) after HDBR in group A, while it decreased by 36.4% ( p=0.084) in group B and by 34.7% ( p=0.062) in group C. (2) Compared with that before HDBR, the submaximal exercise time decreased significantly by 17.7% ( p<0.05) and 21.1% ( p<0.05) in groups A and B, respectively, after HDBR. However, it had no change (+1.3%, p>0.77) in group C. (3) compared with that before HDBR, the changes of heart rate (HR) and blood pressure were slightly improved in group B and C, while deteriorated in group A during orthostatic test and exercise test after HDBR. The results indicate that leg muscular strength exercise and bicycle ergometry exercise could partially attenuate the cardiovascular deconditioning induced by 30 d HDBR, and the latter exercise training could fully provide the protection for the loss of exercise capacity.

걷기와 근력운동이 비만 여성 참가자의 신체구성, 체력 및 혈청지질에 미치는 영향

걷기와 근력운동이 비만 여성 참가자의 신체구성, 체력 및 혈청지질에 미치는 영향

Randomized Controlled Trial of Intradialytic Resistance Training to Target Muscle Wasting in ESRD: The Progressive Exercise for Anabolism in Kidney Disease (PEAK) Study

To determine whether prolonged (24 weeks) intradialytic progressive resistance training (PRT) could counteract muscle wasting more effectively than short-duration training (12 weeks) in patients with end-stage renal disease. Randomized controlled trial. 49 patients (age, 62.6 +/- 14.2 years; 0.3 to 16.7 years on hemodialysis therapy) were randomly assigned to PRT plus usual care for 24 weeks (24WK group) or a crossover control group that received usual care for the first 12 weeks, then PRT plus usual care for the latter 12 weeks (12WK group). Two sets of 10 free-weight PRT exercises were performed at a high intensity during routine thrice-weekly hemodialysis treatment under direct supervision. Primary outcomes include thigh muscle cross-sectional area by means of computed tomography and intramuscular lipid content estimated through attenuation. Secondary outcomes include muscular strength, exercise capacity, and C-reactive protein level. The 24WK group increased muscle cross-sectional area (+1.82 +/- 3.25 cm(2)) compared with losses in the 12WK group (-1.37 +/- 6.87 cm(2); relative effect size, 0.59; 95% confidence interval [CI], -0.27 to 6.65; P = 0.04). However, this outcome did not achieve the level of statistical significance required (P = 0.025) after Bonferroni correction for multiple primary outcomes. There was no significant change in intramuscular lipid content between groups (+0.19 +/- 1.32 versus +0.16 +/- 1.69 Hounsfield units in the 24WK and 12WK groups, respectively; P = 0.31). Log C-reactive protein level tended to decrease in the 24WK group compared with the 12WK group (relative effect size, -0.63; 95% CI, -0.27 [-0.54 to 0.00]; P = 0.05). The 24WK group improved muscular strength measures and exercise capacity throughout the trial. Single geographic site used; no control group without exercise exposure; unblinded assessment of some secondary outcome measures. Prolonged intradialytic PRT did not significantly improve muscle cross-sectional area or intramuscular lipid content compared with a shorter duration of exercise. Future trials are required to more thoroughly investigate the clinical importance and magnitude of myogenic adaptations to PRT in this cohort.

Muscular Strength and Endurance Alterations in Cancer Patients

0703 Current cancer treatments cause physiological toxicities, which lead to a diminished quality of life for cancer patients during and following treatment. These toxicities can manifest as increased fatigue and muscular weakness. Normal and cancer cells require ATP for normal function, and chemotherapy leads to an apoptotic chemical cascade that depletes ATP. ATP is important for muscular contraction to occur, depletion leads to a decrease in the strength and ability of the muscle to contract. Muscle weakness is also caused by increased protein catabolism that leads to a decrement in skeletal muscle mass. Aerobic exercise programs have decreased fatigue, but little research has focused on muscular strength and endurance. PURPOSE: The purpose of this investigation was to determine the effects of an individualized six-month muscular strength and endurance exercise intervention on cancer patients. METHODS: One hundred-ten cancer patients were used for this investigation. Subjects were classified as exercise (n = 82) or non-exercise (n = 28) based on participation in the exercise program. Muscular strength was assessed with a hand-held dynamometer. Muscular endurance was assessed by the number of repetitions performed on various weight machines (bench press, shoulder press, leg press, lat pull-down, leg curl, and leg extension). Additionally, muscular endurance was measured by the number of crunches that could be performed per minute. After the six-month intervention, exercise and non-exercise subjects were reassessed in the same manner as the initial assessment. RESULTS: Repeated Measures ANOVA was used to determine significant change from pre to post exercise. The exercise group showed significant improvements in upper body (lat pull-down pp = .017, triceps extension pp = .027, shoulder press pp = .043), abdominal (crunches pp = .000), and lower body (leg press pp = .007) muscular endurance following the exercise intervention with no change in muscular strength. The non-exercise group showed no significant changes in upper body (lat pull-down, triceps extension, shoulder press), abdominal (crunches), or lower body endurance (leg press), and had a decrease in muscular strength (handgrip pp = .017). CONCLUSIONS: Muscular strength and endurance can be maintained or improved with exercise training in cancer patients. Suggesting an improved ATP availability and decreased protein catabolism.

Potência muscular máxima na flexão do cotovelo uni e bilateral

FUNDAMENTAÇÃO: Exercícios de fortalecimento muscular podem ser realizados de forma uni e bilateral, contudo, pouco é sabido sobre a potência muscular (PM) e a carga máxima (CM) nessas condições. OBJETIVO: Comparar a PM e a CM na flexão do cotovelo entre os dois braços e entre a soma (das ações unilaterais e os resultados obtidos pela execução simultânea do gesto motor). Desses dois resultados com aquele obtido simultaneamente pelos dois braços. METODOLOGIA: Submetemos 24 adultos jovens (14 homens) (PAR-Q negativo) e inexperientes no exercício de flexão de cotovelo ao teste de 1 RM - duas repetições em velocidade máxima na fase concêntrica com 3s de intervalo para cada carga -, com medida da potência (Fitrodyne, Bratislava), em cada braço e nos dois simultaneamente, em ordem randômica, para determinar a PM e a CM. METODOLOGIA: 24 adultos jovens (14 homens) (PAR-Q negativo) foram submetidos ao teste de 1-RM (exercício flexão de cotovelo) com o objetivo de avaliarmos a PM e CM, todos sem experiência prévia no exercício proposto. O protocolo consistia de duas tentativas, com intervalo de 3s entre as mesmas, quando o avaliado procurava imprimir o máximo de velocidade possível na fase concêntrica do movimento, utilizando ações unilaterais e bilaterais definidas randomicamente. Utilizou-se para medir a potência em cada braço e nos dois simultaneamente o Fitrodyne (Bratislava). RESULTADOS: Os resultados para braço esquerdo e direito na CM - 29,3 ± 2,8 e 29,7 ± 2,9kg - e na PM - 106 ± 14 e 109 ± 12W - foram similares (p &gt; 0,05) e fortemente associados (p &gt; 0,94). Comparando a soma dos valores unilaterais com os da execução bilateral, a CM era 5% maior (p = 0,02) e a PM 5% menor (p = 0,053). CONCLUSÃO: Apesar de todos serem destros, não houve diferenças unilaterais em CM e PM, provavelmente devido à inexperiência nesse exercício (fatores neurais). A soma dos resultados unilaterais difere em 5% daquele obtido bilateralmente, mostrando, contudo, tendências opostas entre PM e CM, provavelmente refletindo uma limitação central na coordenação motora de um movimento complexo feito em máxima velocidade e com carga relativamente alta.