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  • 1
    Digitale Medien
    Digitale Medien
    Capillarity of elite cross-country skiers: a lectin (Ulex europaeus I) marker (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of medicine & science in sports 3 (1993), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Capillary morphometries in human skeletal muscle has been limited by technical problems in visualization. The purpose of this study was to develop a method for identifying capillary endothelium at the light level of resolution and to reassess the skeletal muscle capillarity in trained and untrained subjects. A lectin system of biotinylated Ulex europaeus I (UEA-I), a vascular endothelial marker, provided a stain dense enough for direct computer-aided image analysis. A morphometric comparison was made between Andersen's periodic acid-Schiff and the UEA-I capillary stains on tissue sections of human skeletal muscle. When identical fibers from adjacent sections were compared, the capillary density was 6% and cap fiber was 9% greater using die lectin method. Biopsies from 17 cross-country skiers were compared with those of 8 age-matched sedentary controls. The capillary density in the triceps muscle for the skiers was 536.1 ± 33.1 compared with 296 ± 17.7 for the controls. Longitudinal profiles that appear in skeletal muscle cross-sections suggest a more isotropic (random orientation) configuration of the capillary bed than proposed by the Krogh model. There were 50.6% more longitudinal profiles in the trained samples. The UEA-I lectin appears to be a valid and potentially useful marker for computerized image analysis of non-pathological vascular endothelium, and tie differences in capillarity between trained and untrained individuals may be greater than previously reported.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0838.1993.tb00385.x
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  • 2
    Digitale Medien
    Digitale Medien
    Capillarity of elite cross-country skiers: a lectin (Ulex europaeus I) marker (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of medicine & science in sports 3 (1993), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Capillary morphometrics in human skeletal muscle has been limited by technical problems in visualization. The purpose of this study was to develop a method for identifying capillary endothelium at the light level of resolution and to reassess the skeletal muscle capillarity in trained and untrained subjects. A lectin system of biotinylated Ulex europaeus I (UEA-I), a vascular endothelial marker, provided a stain dense enough for direct computer-aided image analysis. A morphometric comparison was made between Andersen's periodic acid-Schiff and the UEA-I capillary stains on tissue sections of human skeletal muscle. When identical fibers from adjacent sections were compared, the capillary density was 6% and cap fiber was 9% greater using the lectin method. Biopsies from 17 cross-country skiers were compared with those of 8 age-matched sedentary controls. The capillary density in the triceps muscle for the skiers was 536.1 ± 33.1 compared with 296 ± 17.7 for the controls. Longitudinal profiles that appear in skeletal muscle cross-sections suggest a more isotropic (random orientation) configuration of the capillary bed than proposed by the Krogh model. There were 50.6% more longitudinal profiles in the trained samples. The UEA-I lectin appears to be a valid and potentially useful marker for computerized image analysis of non-pathological vascular endothelium, and the differences in capillarity between trained and untrained individuals may be greater than previously reported.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0838.1993.tb00368.x
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  • 3
    Digitale Medien
    Digitale Medien
    “Living high − training low” altitude training improves sea level performance in male and female élite runners (2002)
    Oxford, UK : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 12 (2002), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Acclimatization to moderate high altitude accompanied by training at low altitude (living high–training low) has been shown to improve sea level endurance performance in accomplished, but not élite, runners. Whether élite athletes, who may be closer to the maximal structural and functional adaptive capacity of the respiratory (i.e. oxygen transport from environment to mitochondria) system, may achieve similar performance gains is unclear. To answer this question, we studied 14 élite men and eight élite women before and after 27 days of living at 2500 m while performing high-intensity training at 1250 m. The altitude sojourn began 1 week after the USA Track and Field National Championships, when the athletes were close to their season's fitness peak. Sea level 3000-m time trial performance was significantly improved by 1.1% (95% confidence limits 0.3–1.9%). One-third of the athletes achieved personal best times for the distance after the altitude training camp. The improvement in running performance was accompanied by a 3% improvement in maximal oxygen uptake (72.1 ± 1.5–74.4 ± 1.5 ml kg− 1 min− 1). Circulating erythropoietin levels were near double initial sea level values 20 h after ascent (8.5 ± 0.5–16.2 ± 1.0 IU ml−1). Soluble transferrin receptor levels were significantly elevated on the 19th day at altitude, confirming a stimulation of erythropoiesis (2.1 ± 0.7–2.5 ± 0.6 μ g ml-1). Hb concentration measured at sea level increased 1 g dl−1 over the course of the camp (13.3 ± 0.2–14.3 ± 0.2 g dl−1). We conclude that 4 weeks of acclimatization to moderate altitude, accompanied by high-intensity training at low altitude, improves sea level endurance performance even in élite runners. Both the mechanism and magnitude of the effect appear similar to that observed in less accomplished runners, even for athletes who may have achieved near maximal oxygen transport capacity for humans.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1034/j.1600-0838.2002.120111_1.x
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  • 4
    Digitale Medien
    Digitale Medien
    Changes in hemoglobin values in elite cross-country skiers from 1987 to 1999 (2000)
    Copenhagen : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 10 (2000), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Hemoglobin data have been available from ski teams beginning from 1987, and from 1989 to 1999 we have followed hemoglobin values in elite cross-country skiers in international competitions. The mean values at the 1989 World Nordic Ski Championships were lower than population reference values, as would be expected from plasma volume expansion associated with endurance training. However, an increase, particularly in the maximal values, became obvious in 1994 and rose further in 1996. These extreme values provide both a health risk to the individual athlete and unfair competition. After a rule limiting hemoglobin values was introduced, the drop of the highest values was remarkable: among men 15 g/l (0.23 mmol/l) and among women 42 g/l (0.65 mmol/l). It would appear that the rule had achieved its goal of limiting extreme hemoglobin values. Yet the mean hemoglobin concentrations in men and women have continued to rise, suggesting the continued use of artificial methods to increase total hemoglobin mass.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1034/j.1600-0838.2000.010002098.x
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  • 5
    Digitale Medien
    Digitale Medien
    A randomized trial comparing cadexomer iodine and standard treatment in the out-patient management of chronic venous ulcers (1983)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 109 (1983), S. 0 
    Details
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Ninety-three patients with treatment-resistant venous ulcers were included in a multicentre randomized trial to compare cadexomer iodine and the standard treatment used in each centre combined with compression bandages, in healing venous ulcers. The mean duration of ulcers before the trial was more than 2 years. With standard treatment the mean ulcer size increased slightly during the 6-week trial whereas with cadexomer iodine the ulcer size was significantly reduced. Cadexomer iodine was more effective than standard treatment for reduction of pain, removal of pus and debris, removal of exudate, stimulation of granulation and reduction of surrounding erythema. Bacterial infection of ulcers increased or did not change during treatment with the standard therapy whereas cadexomer iodine significantly reduced infection with Staphylococcus aureus, Pseudomonas aeruginosa and other pathogenic organisms. A correlation was seen between the time taken to reduce or eliminate infection with Staphylococcus aureus and rate of ulcer healing. Four patients complained of transient pain in the ulcer after application of the cadexomer iodine. It is concluded that cadexomer iodine increased the rate of healing of infected chronic venous ulcers.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2133.1983.tb03995.x
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  • 6
    Digitale Medien
    Digitale Medien
    Results from the Third Flight of the Millimeter-wave Anisotropy Experiment (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 688 (1993), S. 0 
    Details
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1749-6632.1993.tb43977.x
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  • 7
    Digitale Medien
    Digitale Medien
    MAX searches for intermediate-scale anisotropy of the cosmic microwave background
    Amsterdam : Elsevier
    Infrared Physics and Technology 35 (1994), S. 431-438 
    Details
    ISSN: 1350-4495
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/1350-4495(94)90100-7
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  • 8
    Digitale Medien
    Digitale Medien
    Concentration and transport of nitrate by the mat-forming sulphur bacterium Thioploca (1995)
    [s.l.] : Nature Publishing Group
    Nature 374 (1995), S. 713-715 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Thioploca mats, sediment and water chemistry were studied along a shelf transect off the Chilean coast during late summer, March 1994 (Fig. 1). In the densest Thioploca mat, at 87m water depth, the wet weight of sheathed Thioploca reached nearly 1 kg m2, of which the total bacterial ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/374713a0
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  • 9
    Digitale Medien
    Digitale Medien
    Creating Simple, Low Cost, Animations for Organic Chemistry Instruction (1996)
    Springer
    The chemical educator 1 (1996), S. 1-8 
    Details
    ISSN: 1430-4171
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s00897960058a
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  • 10
    Digitale Medien
    Digitale Medien
    Monitoring of breathing with a segmental air-filled mattress (1971)
    Springer
    Medical & biological engineering & computing 9 (1971), S. 541-547 
    Details
    ISSN: 1741-0444
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Beschreibung / Inhaltsverzeichnis: Sommaire On compare deux systèmes différents pour la surveillance de la respiration dans la période néonatale. La détection des mouvements du thorax et de l'abdomen avec un tensiomètre à mercure, en caoutchouc, et le matelas d'alerte de danger d'apnée. Pour buts cliniques de routine, l'alerte d'apnée a été prouvée d'être une aide digne de foi pour la détection de périodes d'apnée. Les mouvements respiratoires sont transformés dans un signal qu'on peut entendre partout dans les salles, sans surveiller le nouveau-né-et même dans d'autres chambres, à l'aide d'une extension. Le matelas donne l'alarme quand la respiration s'arrête plus longuement que le temps réglé d'avance. Comme système d'alerte d'apnée, l'appareil est aussi parfait qu'on peut éspérer. Il est bien construit, facile à utiliser et indéréglable. En outre il est bon marché pour le service qu'il rend.
    Kurzfassung: Zusammenfassung Es werden zwei verschiedene Arten des Abhörens der Atmung in der Neugeburtsperiode verglichen: Feststellung der Thorax- und Unterleibbewegungen mittels eines Quecksilber-in-Gummi Dehnungsmessers und die Atemstillstand-Alarmmatratze. Die Apnoe-Alarmmatratze hat sich für klinische Routinezwecke als zuverlässiges Hilfsmittel zur Festestellung von Apnoeperioden erwiesen. Die Atembewegungen werden in ein hörbares Signal umgewandelt, das überall im Krankensaal, selbst in anderen Räumen mit Anbauten, ohne Beobachtung des Säuglings wahrgenommen werden kann. Es gibt ein Alarmsignal, wenn die Atmung für eine längere als vorher eingestellte Zeitdauer aufhört. Der Apparat ist als ein Apnoe-Alarm so perfekt, wie man es erwarten muss. Er ist gut entworfen, leicht im Gebrauch und narrensicher. Ausserdem ist er im Hinblick auf seine Leistung billig.
    Notizen: Abstract Two different ways of monitoring respiration in the neonatal period are compared: Detection of the movements of the thorax and abdomen with a mercury-in-rubber strain gauge and the apnoea-alarm mattress. For routine clinical purposes the apnoea-alarm has proved to be a reliable help for the detection of periods of apnoea. The respiration movements are transformed to an audible signal which can be followed everywhere in the wardroom without watching the infant—and even in other rooms with an extension. It gives an alarm if the respiration stops for longer than a preset time. As an apnoea-alarm the instrument is as perfect as one can expect. It is well designed, easy to use and foolproof. Besides it is cheap for its capability.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02474710
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