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BACKGROUND:No studies currently focus on the measurement of daily water loss under certain physical activity level continuously and precisely. OBJECTIVE:To provide evidence for daily water requirement in Chinese young men based on the measurement of the daily water loss in Chinese young men under moderate physical activity. METHODS:Twenty male subjects were enroled, and 23-hour whole-body sweat loss and urine output were measured using high-precision body weighting scale in whole-room indirect calorimeter. The results were converted to daily (24-hour) water requirement to determine the daily water requirement. Daily whole-body sweat loss per unit body weight, daily whole-body sweat loss per unit fat free mass and daily whole-body sweat loss per unit surface area were calculated. RESULTS AND CONCLUSION:In Chinese young men, daily water loss was (3 339.7±509.9) g, daily urine output was (1 982.9±449.5) g and daily whole-body sweat loss was (1 356.7±215.6) g. There was a linear correlation between water intake and water loss (r=0.616,P < 0.05). Daily whole-body sweat loss per unit body weight was (21.0±3.6) g/kg, daily whole-body sweat loss per unit fat free mass was (25.8±3.9) g/kg and daily whole-body sweat loss per unit surface area was (799.4±129.4) g/m2. Daily water requirement of Chinese young men under moderate physical activity is approximately 3 340g, and moreover, water loss increases with the increase of water intake.
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@#Capital Medical University has opened the courses of Prosthetic and Orthotics Engineering since 2003. Through a three-period development of more than ten years, the professional training scheme has met the international requirements and highlight in specialty characteristics. It needs a combination of medicine, rehabilitation, technology, prosthetic and orthotics, an enough foundation for personals and sites, teachers of bi-profession, and a comprehensive test system to practice.
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This paper is mainly devoted to the relationship between the correlation dimension (CD) of exercise heart rate variability (EHRV) and the status of cardiovascular function. Hypertensive patients and healthy people were enrolled in two contrast groups. Dynamic electrocardiograph (ECG) in step exercise was recorded. EHRV was extracted by wavelet transform. The CDs in the whole course of exercise and in three stages of exercise were calculated, the three stages being named rest-before-exercise, during-exercise, and after-exercise. SPSS software was used for statistical analysis. The results revealed all the CDs showed significant difference between two groups except that in the stage of during exercise. By discrimination analysis, the average correct rate was 92.2%. It indicated that the CD in stress status probably could be an effective non-linear parameter for assessing cardiovascular function status.
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Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Case-Control Studies , Electrocardiography , Methods , Exercise , Physiology , Exercise Test , Heart Rate , Physiology , Hypertension , Nonlinear Dynamics , Signal Processing, Computer-AssistedABSTRACT
0.05). CONCLUSION The sound localization apparatus can test the localization ability of person, and it can be used in simply and reasonably.