Verminderung des Verformungsvermögens bei mehrachsigen Spannungszuständen unter Kriechbeanspruchung

Ewald, J.

doi:10.1002/mawe.19910221002

“…The reason for these different findings was possibly the small part of left-handers in all of the current large-scale studies with a mean of 50 left-handed, ranging from 22 to 120 (Crosby et al, 1994;Ewald and Kohler 1991;Hanten et al, 1999;Harth and Vetter 1994;Massy-Westropp et al, 2004;Mathiowetz et al, 1985). Such sample sizes are probably not large enough to sufficiently discuss influenced hand strength in this special part of the population multifactorially and the percentage of 7.3% left-handed in our study group is too small to establish reference values for leftdominant people.…”

Section: Discussionmentioning

confidence: 70%

“…1) Gilbertson and Barber-Lomax 1994;Hanten et al, 1999;Harth and Vetter 1994;Massy-Westropp et al, 2004;Mathiowetz et al, 1985), the percentage of left-handed participants Ewald and Kohler 1991;Hanten et al, 1999;Harth and Vetter 1994;MassyWestropp et al, 2004;Mathiowetz et al, 1985), and the influence of gender, height and weight on grip and pinch strength (Crosby et al, 1994;Gilbertson and Barber-Lomax 1994;Hanten et al, 1999;Harth and Vetter 1994;Mathiowetz et al, 1985). It becomes apparent that these characteristics do not vary between different populations, suggesting a cultural independent age and gender related distribution of hand strength.…”

Section: Discussionmentioning

confidence: 99%

“…Samples for normative studies must be large, random, and representative for the population's heterogeneity to be statistically valid (Portney and Watkins 1993). In the existing large-scale investigations for normative data reliability is affected by the lack of an acceptable sample size (Crosby et al, 1994;Fraser and Benten 1983;Gilbertson and Barber-Lomax 1994;Harkonen et al, 1993), the small number of 4 very old subjects (Ewald and Kohler 1991;Hanten et al, 1999;Massy-Westropp et al, 2004;Mathiowetz et al, 1985;Thorngren and Werner 1979), the focus on a special part of the population Harth and Vetter 1994;Schmidt and Toews 1970) or the deviation from standard protocol or type of dynamometer (Fraser and Benten 1983;Hanten et al, 1999;Schmidt and Toews 1970;Thorngren and Werner 1979). In addition, comparing the data of different populations indicates that there is a considerable variation and questions the reliability of applying norms internationally (Fraser and Benten 1983;Gilbertson and BarberLomax 1994).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Age- and Gender-Specific Normative Data of Grip and Pinch Strength in a Healthy Adult Swiss Population

Werle

¹

,

Goldhahn

²

,

Drerup

³

et al. 2009

J Hand Surg Eur Vol

View full text Add to dashboard Cite

Assessment of hand strength is used in a wide range of clinical settings especially during treatment of diseases affecting the function of the hand. This investigation aimed to determine age-and gender-specific reference values for grip and pinch strength in a normal Swiss population with special regard to old and very old subjects as well as to different levels of occupational demand. Hand strength data were collected using a Jamar dynamometer and a pinch gauge with standard testing position, protocol and instructions. Analysis of the data from 1023 tested subjects between 18 and 96 years revealed a curvilinear relationship of grip and pinch strength to age, a correlation to height, weight and significant differences between occupational groups. Hand strength values differed significantly from those of other populations, confirming the thesis that applying normative data internationally is questionable. Age-and gender-specific reference values for grip and pinch strength are presented. Hand strength data were collected using a Jamar dynamometer and a pinch gauge with standard testing position, protocol and instructions.Analysis of the data from 1023 tested subjects between 18 and 96 years revealed a curvilinear relationship of grip and pinch strength to age, a correlation to height, weight and significant differences between occupational groups. Hand strength values differed significantly from those of other populations, confirming the thesis that applying normative data internationally is questionable.

show abstract

“…Focusing on hand dominance in current large scale investigations, the difference between the strength scores of right and left-dominant people varies from -2.8% to 18% and -6.5% to 4.4% for grip and pinch strength respectively (Crosby et al, 1994;Ewald and Kohler 1991;Hanten et al, 1999;Harth and Vetter 1994;Mathiowetz et al, 1985). The reason for these different findings was possibly the small part of left-handers in all of the current large-scale studies with a mean of 50 left-handed, ranging from 22 to 120 (Crosby et al, 1994;Ewald and Kohler 1991;Hanten et al, 1999;Harth and Vetter 1994;Massy-Westropp et al, 2004;Mathiowetz et al, 1985).…”

Section: Discussionmentioning

confidence: 99%

Age- and Gender-Specific Normative Data of Grip and Pinch Strength in a Healthy Adult Swiss Population

WERLE¹,

GOLDHAHN²,

DRERUP³

et al. 2009

Journal of Hand Surgery (European Volume)

View full text Add to dashboard Cite

Assessment of hand strength is used in a wide range of clinical settings especially during treatment of diseases affecting the function of the hand. This investigation aimed to determine age-and gender-specific reference values for grip and pinch strength in a normal Swiss population with special regard to old and very old subjects as well as to different levels of occupational demand. Hand strength data were collected using a Jamar dynamometer and a pinch gauge with standard testing position, protocol and instructions. Analysis of the data from 1023 tested subjects between 18 and 96 years revealed a curvilinear relationship of grip and pinch strength to age, a correlation to height, weight and significant differences between occupational groups. Hand strength values differed significantly from those of other populations, confirming the thesis that applying normative data internationally is questionable. Age-and gender-specific reference values for grip and pinch strength are presented. Hand strength data were collected using a Jamar dynamometer and a pinch gauge with standard testing position, protocol and instructions.Analysis of the data from 1023 tested subjects between 18 and 96 years revealed a curvilinear relationship of grip and pinch strength to age, a correlation to height, weight and significant differences between occupational groups. Hand strength values differed significantly from those of other populations, confirming the thesis that applying normative data internationally is questionable.

show abstract

Beurteilung von mehrachsigen Spannungs‐Dehnungszuständen im Langzeitkriechbereich auf der Basis von Festigkeitshypothesen

Kußmaul

¹

,

Maile

²

,

Sheng

³

1994

Materialwissenschaft Werkst

1

0

View full text Add to dashboard Cite

Assessment of multiaxial stress states in the long-term creep range on basis of the strength hypothesesThe validity of strength hypotheses to describe the multiaxial stress states in the long-term crcep range was examined by means of creep tests on specimens of 1CrlMo-steel at 550 "C. It was found out that the v. Mises hypothcsis is suitable to describe the creep deformation behaviour in the range, where n o irreversible creep damage could be observed.The creep damage generally occurs at the end of secondary crcep range reaching the minimum creep rate. In the presence of creep damage and to evaluate creep rupture a combined strength hypothesis should be used. By means of the combination o f diffcrcnt stresses not only the deformation but also the damage in thc microstructure could be taken into account. There is a good coincidencc between the predicted and the metallographic determined damage, so that this hypothesis is also generally suitable to estimate the rcmanent life.

show abstract

Verminderung des Verformungsvermögens bei mehrachsigen Spannungszuständen unter Kriechbeanspruchung

Cited by 3 publications

References 5 publications

Age- and Gender-Specific Normative Data of Grip and Pinch Strength in a Healthy Adult Swiss Population

Age- and Gender-Specific Normative Data of Grip and Pinch Strength in a Healthy Adult Swiss Population

Age- and Gender-Specific Normative Data of Grip and Pinch Strength in a Healthy Adult Swiss Population

Beurteilung von mehrachsigen Spannungs‐Dehnungszuständen im Langzeitkriechbereich auf der Basis von Festigkeitshypothesen

Contact Info

Product

Resources

About