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  • 1995-1999  (2)
  • Dentin  (1)
  • Key words Preventive exercise – exercise intensity – dance for the elderly – sports for the elderly  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Clinical oral investigations 1 (1997), S. 125-130 
    ISSN: 1436-3771
    Keywords: Key words Fluoride ; Dentin ; Dentinal fluid flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of the present study was to compare fluoride uptake of dentin with and without simulating dentinal fluid flow. Eighty-five dentinal discs were prepared from retained human molars. Seventeen discs were used to assess baseline fluoride content (controls). Sixty-eight discs were evenly distributed among two experimental groups and were fixed for 24 h in a two-chamber device allowing for simulating dentinal fluid flow. Thirty-four samples were treated with dentifrice slurry containing a low fluoride concentration (Elmex, dilution 1:5); the remaining discs were treated with a solution of a high fluoride concentration (Elmex Fluid). For the perfused group, each of the 17 discs of the high and low concentration fluoride groups were constantly perfused during the experiment. The remaining fluoridated specimens were not perfused. All specimens were assayed for KOH-soluble fluoride and structurally bound fluoride. Structurally bound fluoride was determined in three successive layers of 20 µm each. Uptake of KOH-soluble fluoride was significantly higher in the specimens fluoridated with Elmex Fluid compared to the samples treated with the dentifrice slurry. The uptake of KOH-soluble fluoride was not influenced by perfusion of the dentinal discs. However, perfusion resulted in lower acquisition of structurally bound fluoride in the samples treated with the dentifrice slurry. After application of Elmex Fluid, no significant difference was found in the amount of structurally bound fluoride between the perfused specimens and non-perfused samples. It is suggested that further studies on fluoride uptake in dentin should use a model simulating outward dentinal fluid flow.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für Gerontologie + Geriatrie 32 (1999), S. 207-212 
    ISSN: 0044-281X
    Keywords: Schlüsselwörter Präventives Training – Belastungsintensität – Seniorentanz – Alterssport ; Key words Preventive exercise – exercise intensity – dance for the elderly – sports for the elderly
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In field research, training intensity was tested during three different dances by recording the exercise heart rates. The subjects (twelve women from 59 to 77 years old) were tested once a week three times, over three minutes with a break of three minutes, three weeks in all. The sequence of the dances changed every week. 108 values of the maximum heart rates measured were considered for statistical calculation. 77 percent of these values were above the threshold to reach health related relevance. There was no significant difference between the seperate dances. The results suggest that dancing even of slow dances will have positive effects for a preventive heart-circulatory training, when the exercise program takes into account, within the context of a particular group, the needs of the individual, especially training duration and training frequency.
    Notes: Zusammenfassung In einer Felduntersuchung wurde die Belastungsintensität während dreier, vom Takt und Tanzprofil her unterschiedlicher Tanzformen bei 12 Frauen im Alter von 59 bis 77 Jahren ( {\overline x} = 69 Jahre) mittels Pulsfrequenzmessung erhoben. Die Versuchspersonen wurden jeweils dreimal 3 Minuten lang mit je 3 Minuten Pause belastet, dies insgesamt dreimal im Wochenabstand. Dabei wurde die Abfolge der Tänze von Woche zu Woche variiert. Die erzielten auswertbaren 108 Spitzenwerte lagen zu 77 % oberhalb der Reizschwelle für ein gesundheitsorientiertes Ausdauertraining. Diese Ergebnisse lassen erwarten, daß das Tanzen auch relativ langsamer Tanzformen bei wenig trainierten Frauen im fortgeschrittenen Lebensalter positive Effekte im Sinne eines präventiven Herz-Kreislauf-Trainings verspricht, wenn es im konkreten Fall gelingt, die beim Tanzen erreichbare Belastungsintensität durch weitere, individuell auf die Population abgestimmte Belastungsnormative, insbesondere Belastungsdauer und -häufigkeit, zu ergänzen.
    Type of Medium: Electronic Resource
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