Scorpions of the Family Buthidae have lower water loss rates (WLR) and enhanced osmoregulatory capacities in comparison with sympatric species of F. Scorpionidae. In this study we followed changes in water content of different body compartments in four scorpion species under prolonged desiccation conditions. The high initial WLR previously reported for Scorpionidae result in rapid depletion of ...

The main purpose of the present study was to investigate the effect of 16 weeks of resistance training (RT) on body water in men and women. Thirty men (22.7 ± 4.4 years, 68.4 ± 9.0 kg and 174.5 ± 6.6 cm) and 34 women (22.7 ± 4.1 years, 58.8 ± 11.9 kg and 162.6 ± 6.2 cm) underwent progressive RT for 16 weeks (2 phases, 8 weeks each), 3 times per week, that consisted of 10-12 whole body exercises...

BACKGROUND As a reduction of water spaces is expected in the elderly because of fat-free mass loss, disease is often associated with increased hydration. The present study compared water spaces and cellular hydration in adults, healthy and diseased aged patients. METHODS An open study was conducted in 6 geriatric wards and a nutrition laboratory involving 85 aged diseased persons, 68 healthy ...

Acknowledging that total body water (TBW) turnover is complex, and that no measurement is valid for all situations, this review evaluates 13 hydration assessment techniques. Although validated laboratory methods exist for TBW and extracellular volume, no evidence incontrovertibly demonstrates that any concentration measurement, including plasma osmolality (P(osm)), accurately represents TBW gai...

The New Zealand sea lion, Phocarctos hookeri, is the deepest- and longest-diving sea lion. We were interested in whether the diving ability of this animal was related to changes in its at-sea and diving metabolic rates. We measured the metabolic rate, water turnover and diving behavior of 12 lactating New Zealand sea lions at Sandy Bay, Enderby Island, Auckland Islands Group, New Zealand (50 de...

概要 諸種 内分 泌疾患 々者についてtotal exchangeable sodium (Nae)お よびpotassium (Ke)を 測定 し,得 た成績 をtotal body water (TBW)か ら算出 したlean body massと の関連 において比較 した. 原発性 アル ドス テロ ン症ではNaeは 著増 し, Keは 減少 していた.一 方続発性 アル ドステ ロン症を伴な つた腎尿 細管 性 アシ ドージスでは, Naeお よびTBWの 増加は な くKeは 著減 していた. Cushing症 候 群 ではKeは 減少 していた. Addison病 では予想 されたNaeの 減少, Keの 増加 はみ られなかつた.褐 色 細胞腫 ではNae, Keお よびTBWは いずれ も正常 であつた.甲 状線機能亢 進症 ではNae増 加, Ke減 少 の傾 ...

A theoretical efficiency has been calculated from the known urea clearance of the artificial kidney, the assumed total body water of the patient, and the initial plasma urea. The efficiency of dialysis never significantly exceeded the calculated figure. In some patients with trauma or glomerulonephritis the efficiency was very poor whereas in patients with renal failure complicating pregnancy t...

1. Multi-frequency bio-impedance analysis has been used to estimate extracellular and total body water in a heterogeneous group of 43 surgical patients (23 males, 20 females). 2. Radioisotope-dilution methods were used for the measurement of extracellular and total body water. 3. Resistance and reactance were measured between wrist and ankle at frequencies from 5 kHz to 1 MHz. 4. Extracellular ...

Both acute and chronic dehydration can have important implications for human behaviour and health. Young children, non-autonomous individuals and the elderly are at a greater risk of dehydration. Mild hypertonic dehydration could be related to less efficient cognitive and physical performance and has been reported to be associated with frequently occurring pathological conditions, especially ne...

Deuterium dilution for the measurement of total body water (TBW) has been conducted using varying protocols for equilibration. We measured TBW from deuterium dilution in urine samples in twenty-eight subjects using three protocols: (1) early morning dosage without breakfast, measuring deuterium in a second voiding at 4 h and 6 h; (2) early morning dosage with breakfast with the same measurement...