ABSTRACT
RESUMEN Introducción: los conductores de transporte están expuestos a largas jornadas que pueden provocar fatiga física por excesiva concentración visual y esfuerzos en diversos músculos. La fatiga laboral que experimentan puede ser definida como un estado no placentero, por la saturación de actividad muscular, mental y afectiva que induce a enfermedades en los sistemas gástrico, circulatorio e inmunológico, al igual que a trastornos del sueño. Objetivo: analizar la fatiga laboral percibida en relación con sus factores asociados, en choferes de compañías de transporte provenientes de tres provincias de Ecuador. Materiales y métodos: se realizó un estudio de tipo no experimental, prospectivo, analítico y transversal, en 141 conductores profesionales de tres provincias ecuatorianas. Se les aplicó el cuestionario sueco de fatiga ocupacional SOFI-SM, que evaluó la fatiga física, mental, psíquica e irritabilidad. Se realizó un análisis bivariado con las variables nominales de edad, escolaridad y antigüedad, a través de las pruebas Chi cuadrado de Pearson y V de Cramér. Para la comprobación de fatiga por provincia de procedencia, se realizó el análisis de covarianza mediante la prueba de Kruskal-Wallis. Resultados: se evidenció el nivel inadecuado e inaceptable de fatiga física, con una prevalencia del 64,5 % de inferencia estadística con el estado civil. No se presentaron diferencias significativas entre las puntuaciones totales del instrumento y la provincia de procedencia. Conclusiones: el nivel alto de fatiga indicó la urgencia de implementar actividades de recuperación, de adecuación de horarios y de contratación de más personal, puesto que este agotamiento ocasiona impericias, distracciones y malas decisiones que conllevan a los accidentes de tránsito. Es necesario intervenir desde la medicina laboral en la evaluación de la salud de los conductores para conocer cuáles son las enfermedades preexistentes que pudieran estar influyendo en la fatiga laboral.
ABSTRACT Introduction: transport drivers are exposed to long working days that can cause physical fatigue due to excessive visual concentration and effort in various muscles. The occupational fatigue they experiment may be defined as an unpleasant state, because of the saturation of the muscular, mental and affective activity that induces diseases in the gastric, circulatory and immunological systems as well as sleep disorders. Objective: to analyze perceived occupational fatigue in relation with its associated factors, in drivers of transportation companies from three provinces of Ecuador. Materials and methods: a non-experimental, prospective, analytical and cross-sectional study was conducted in 141 professional drivers of three Ecuadorian provinces. The Swedish occupational fatigue questionnaire SOFI-SM was applied, which evaluated the physical, mental, psychical fatigue and irritability. A bivariate analysis was carried out with the nominal variables age, schooling, and seniority through Pearsonꞌs Chi squared and Cramer's tests. To verify the fatigue by province of origin, the analysis of covariance was performed using the Kruskal-Wallis test. Results: the inadequate and unacceptable level of physical fatigue was evidenced, with a prevalence of 64.5 % of statistical inference with marital status. There were no significant differences between the total scores of the instrument and the province of origin. Conclusions: the high level of fatigue indicated the urgency of implementing recovery activities, adapting schedules and hiring more staff, since this exhaustion causes imperfections, distractions and bad decisions that lead traffic accidents. It is necessary to intervene from the occupational medicine in the evaluation of the health of the drivers to find out which pre-existing diseases could be influencing occupational fatigue.
ABSTRACT
Physical fatigue often appears after stroke, which may influence rehabilitation training and recovery. This paper introduced the causes, clinical manifestations and related factors of physical fatigue after stroke. Energy metabolism increases after stroke, which may play a role in physical fatigue after stroke, and can be managed in some ways. It is needed to research the application of energy metabolism measure in physical fatigue after stroke further.
ABSTRACT
According to the theory of traditional Chinese medicine (TCM), spleen and stomach are the most important visceral system to maintain human life and health, and healthy spleen and stomach can help to nourish the primordial qi, so as to maintain sufficient vitality of the body. Therefore, invigorating the spleen plays an important role in the prevention and recovery of human diseases. In this paper, the correlation between the theory of invigorating the spleen of TCM and the function of modern health care was discussed, and the relationship between spleen invigorating and digestive tract protection, immunomodulation, anti-oxidation, relieving physical fatigue, helping to reduce fat and lose weight, improving sleep and other modern health care functions and its mechanism were systematically summarized and analyzed. The mechanism and material basis of important spleen-invigorating Chinese medicinal materials such as Astragalus membranaceus, Poria cocos, Dioscorea opposita, Euryale ferox, Atractylodes macrocephala and Polygonatum sibiricum and classic recipe of invigorating spleen such as Guipi Decoction, Sijunzi Decoction, Buzhong Yiqi Decoction and Lizhong Decoction were briefly reviewed, in order to provide some new ideas and methods for the development and utilization of spleen-invigorating medicine and food resources in TCM and the research and development of TCM health food.
ABSTRACT
Objectives: The current study examined a supplement (denoted here as V7) containing astaxanthin, reduced coenzyme Q10, leucine, arginine, citrulline, DHA, and krill oil and a placebo containing only salad oil. This study examined the subjective level of fatigue and the performance level while subjects consumed the supplement or the placebo for 30 day. Methods: Subjects were 19 members of the women’s softball club at a physical education university. Results: Results indicated that leg fatigue, the state of the back, dark spots on the skin, and performance on a 50-m sprint improved significantly after consuming V7 in comparison to values prior to consumption. Scores for a total of 6 items—leg fatigue, the state of the hips, the state of the back, skin blotches, and eye strain—improved significantly after consuming V7 in comparison to values prior to consumption. Conclusion: These findings presumably indicate that DHA (an essential fatty acid) and krill oil (krill are rich in theω3 polyunsaturated fatty acids DHA and EPA) in phospholipid form are taken up by the cell membrane. The 2 substances enhance cell and tissue function in the body by prompting cells to take up nutrients and quickly eliminate waste products. Moreover, reduced coenzyme Q10 had 2 actions—“production of energy” and “antioxidant action” that inhibited physical deterioration—while astaxanthin had “antioxidant action.” This antioxidant action, anti-fatigue action, antiinflammatory action, enhanced immunity, and enhanced endurance synergistically acted to alleviate general fatigue. Moreover, muscle protein synthesis stimulated by leucine, arginine, and citrulline alleviated muscle fatigue in the legs, knees, hips, and back, presumably accounting for the improved time on the 50-m sprint.
ABSTRACT
The purpose of the present study was to determine the effects of polysaccharide from Rhodiolae Radix (PRR) on physical fatigue using a forced swimming test in male mice. 96 mice were divided randomly into four groups based on body weight (n = 24). One of the groups was the control group; the others were PRR supplemented groups (25, 50 and 100 mg/kg body weight). Forced swimming test of mice were carried out after 28 days of PRR administration, and the blood lactic acid (BLA), blood urea nitrogen (BUN), liver glycogen and muscle glycogen contents were deter-mined. The data suggest that PRR can extend the exhaustive swimming time of the mice, as well as increase the tissue glycogen contents, and decrease the BLA and BUN contents. These results indicated that PRR had significant anti-fatigue effects.
ABSTRACT
The purpose of the present study was to determine the effects of polysaccharide from Rhodiolae Radix (PRR) on physical fatigue using a forced swimming test in male mice. 96 mice were divided randomly into four groups based on body weight (n = 24). One of the groups was the control group; the others were PRR supplemented groups (25, 50 and 100 mg/kg body weight). Forced swimming test of mice were carried out after 28 days of PRR administration, and the blood lactic acid (BLA), blood urea nitrogen (BUN), liver glycogen and muscle glycogen contents were deter-mined. The data suggest that PRR can extend the exhaustive swimming time of the mice, as well as increase the tissue glycogen contents, and decrease the BLA and BUN contents. These results indicated that PRR had significant anti-fatigue effects.