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  • 1
    Electronic Resource
    Electronic Resource
    Sweating economy by graded control in well-trained athletes (1997)
    Springer
    Pflügers Archiv 433 (1997), S. 675-678 
    Details
    ISSN: 1432-2013
    Keywords: Key words Long-term physical training ; Acclimation to heat ; Body temperature ; Frequency of sweat expulsion ; Local sweat rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Local sweat rates (M sw) at the chest and thigh and the frequency of sweat expulsions (F sw) were determined in human subjects with (athletes) or without (non-athletes) long-term physical training during moderate bicycle exercise (80 W for 30 min) at ambient thermoneutrality (23°C) and 60% relative humidity. There was a tendency for M sw to be lower in athletes. The rise of M sw with increasing F sw was significantly less steep and F sw was also controlled at a significantly lower rate in athletes than in non-athletes. The start of exercise was followed by a temporary decrease in mean skin temperature (T-s) which was less distinct in athletes. The rise in T-s at the end of exercise was significant in athletes (0.80 ± 0.26°C) but not in non-athletes (0.26 ± 0.33°C). The results indicate that long-term physical training leads to improved circulatory heat transfer to the skin and to a more graded nervous control of sweat expulsion and, further, tends to reduce the rate of sweating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004240050331
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    TGF-β1 mediates 70-kDa heat shock protein induction due to ultraviolet irradiation in human skin fibroblasts (1999)
    Springer
    Pflügers Archiv 438 (1999), S. 239-244 
    Details
    ISSN: 1432-2013
    Keywords: Key words Anti TGF-β receptor antibody ; Heat shock protein 70 ; Human skin fibroblast cell ; Transforming growth factor-β ; Ultraviolet B
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Ultraviolet B (UVB) alters the expression of heat shock protein 70 (HSP70) in cultured fibroblast cells derived from human skin. However, the nature of the signal transduction pathway remains to be determined. Transforming growth factor-β (TGF-β) has a large variety of biological functions, including cell growth control, modulation of inflammation and immunoregulation. In this study, we examined whether TGF-β is associated with the process of HSP70 expression induced by UVB irradiation. The constitutive expression of TGF-β1 mRNA and HSP70 expression in human skin fibroblast cells were detected using reverse transcription polymerase chain reaction (RT-PCR) and Western blot analysis. The results indicate that: (1) UVB irradiation stimulates HSP70 expression in a dose- and time-dependent manner, (2) constitutive expression of TGF-β1 mRNA is detected after UVB irradiation, the level of which peaks at 4 h after 10 mJ cm–2 of UVB irradiation, (3) HSP70 expression is induced by TGF-β1 without UVB irradiation, and (4) HSP70 expression induction with UVB irradiation is inhibited by preincubation of the cells with the anti-TGF-β type II receptor antibody. Our results suggest that HSP70 expression induced by UVB involves the autocrine signalling of TGF-β production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004240050905
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Analysis of sweat evaporation from clothing materials by the ventilated sweat capsule method (1997)
    Springer
    European journal of applied physiology 76 (1997), S. 1-7 
    Details
    ISSN: 1439-6327
    Keywords: Key words Thermal sweating ; Sweat absorption ; Silk-cotton-nylon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The local influence of three clothing materials i.e. silk, cotton and nylon, in (1) full or (2) partial skin contact or (3) at 3 mm from the skin, on sweat evaporation from the chest skin surface of human subjects was studied. The hygrometer-ventilated capsule method was used and sweating was induced at ambient thermoneutrality by a central heat load following lower-leg immersion in water at 43°C. The presence of clothing delayed the rise in capsule relative humidity (CRH) induced by heat loading. During the first 6 min of heating, CRH rose more steeply with clothing that was in full skin contact than with clothing that had partial or no contact. The rate of decrease in CRH from 1 min to 6 min after heating was not influenced by the presence of clothing or by the different degrees of skin contact. The subsequent return of CRH to the pre-heating level was delayed most by cotton, less by silk and least by nylon. For silk and nylon, partial contact with the skin prolonged the return to control conditions, as compared with full skin contact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004210050205
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    Paper (German National Licenses)
    Fulltext
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