Assessment of subcutaneous adipose tissue using ultrasound in highly trained junior rowers     

Anne Kelso  Emese Trájer  Katja Machus  Gunnar Treff  Wolfram Müller  Jürgen M. Steinacker 《European Journal of Sport Science》2017,17(5):576-585

Introduction: There is a large variety of body fat (BF) measurements, which differ in validity and reliability. The aim of this study was to measure subcutaneous adipose tissue (SAT) using ultrasound (US) in highly trained junior rowers in a field setting, establish fat patterning profiles, and compare the profiles between male and female athletes. Skinfold thickness (SKF) measurements were also taken and compared to US measurements. Methods: Sixteen athletes participated. US measurements were taken at eight sites and reported as a sum of SAT (D): D_Excl (without embedded structures) and D_Incl (including embedded structures). SKF was measured at three sites and reported as a sum of adipose tissue thickness (SUM_SKF). Results: Mean SAT thickness (D_Incl) was 27.6?±?12.4?mm for males and 65.5?±?11.8?mm for females. Females had significantly more embedded structures than males (P?=?.016). Significant correlations were found (P?<?.001, r?=?0.92) comparing SUM_SKF to D_Incl and between SKF and US measurements at the thigh site (P?<?.001, r?=?0.86). Conclusion: US is a suitable tool to measure BF in the field testing of athletes and enables measurements of SAT with an accuracy and reliability not reached before. The sum of thicknesses (D_Incl or D_Excl) can be used to represent subcutaneous fat based on accurate measurements of uncompressed SAT thicknesses.  相似文献   

Sportwissenschaft interdisziplinär     

Klaus Willimczik  Gunnar Drexel 《Sportwissenschaft》2004,34(1):85-90

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Evening activities as a potential confound in research on the adrenocortical system in children   总被引：2，自引：0，他引：2  

Kertes DA  Gunnar MR 《Child development》2004,75(1):193-204

The relation among children's evening activities, behavioral characteristics, and activity of the hypothalamic-pituitary-adrenocortical axis was assessed in normally developing children ages 7 to 10 years. Salivary cortisol at bedtime was compared on evenings when children had structured activities outside of the home with unstructured evenings at home in relation to parental reports of children's behavioral characteristics. Participating in evening activities, particularly sport activities, was associated with small increases in bedtime cortisol levels in boys but not in girls. Differences in cortisol on activity versus no-activity nights were negatively related to children's social isolation. These results show that in studies with children, nights on which participants engage in sport activities should be avoided when collecting ambulatory measures of salivary cortisol concentrations.  相似文献   

Dampening of Adrenocortical Responses during Infancy: Normative Changes and Individual Differences   总被引：6，自引：0，他引：6  

Megan R. Gunnar  Laurie Brodersen  Kent Krueger  Joseph Rigatuso 《Child development》1996,67(3):877-889

Changes in cortisol and behavioral responses were examined longitudinally in 83 infants (39 girls, 44 boys) tested at their well-baby exams with inoculations at 2, 4, 6, and 15 months (72 infants completed all testing). Another sample of 2-, 4-, and 6-month-olds ( n = 18 per age) received mock exams without inoculations to determine early developmental changes to the exam procedures. Behavioral distress was coded every 30 sec during the exam, a 5-min inoculation period, and a 20-min recovery period. Salivary cortisol was obtained upon arrival at the clinic and 25 min after the beginning of the inoculation period. To the exam-inoculation procedures, cortisol responses were high at 2 months, decreased significantly between 2 and 4 months, remained comparable between 4 and 6 months, and then declined again between 6 and 15 months. Between 6 and 15 months there was also a decrease in pretest cortisol. By 15 months, significant increases in cortisol from pre- to posttest were no longer observed for most infants. To the exam-only procedures, cortisol responses decreased between 2 and 4 months, and by 4 months most infants failed to show pre- to posttest increases in cortisol. Behavioral distress decreased between 2 and 6 months, but increased again at 15 months. While crying and cortisol were modestly correlated during the 2- to 6-month exam-inoculation procedures, at 15 months no significant correlations were obtained. Behavioral and hormonal reactions thus followed different ontogenetic paths and may provide different information about infant functioning. There was some evidence that the emergence of the circadian rhythm in cortisol might be related to the early decrease in cortisol response.  相似文献   

Interpersonal Behaviour in Counseling: Client and Counselor Expectations and Experiences Related to Their Evaluation of Session     

Gunnar?SchedinEmail author 《International journal for the advancement of counseling》2005,27(1):57-69

Expectations and experiences of the interpersonal behaviour between the counselor and the client were investigated in an exploratory study, and related to the evaluation of career counseling sessions with adolescents in a secondary school context in Sweden. The relationship was measured by using the Structural Analysis of Social Behaviour model (SASB). In general, positive evaluation as judged by the clients was found to be related to the clients having more positive expectations and experience of their own and counselors affiliative behaviour. No positive associations between own expected and experienced behaviour and evaluation were found as judged by the counselors. Affiliative behaviour was found to be the most important dimension in predicting evaluation of sessions in a positive way for the clients.  相似文献   

Coping with aversive stimulation in the neonatal period: quiet sleep and plasma cortisol levels during recovery from circumcision   总被引：2，自引：0，他引：2  

M R Gunnar  S Malone  G Vance  R O Fisch 《Child development》1985,56(4):824-834

Measures of behavioral state and plasma cortisol were obtained on 80 healthy, full-term, 2-3-day-old, male newborns who were scheduled to be circumcised. To establish baseline or precircumcision levels, the newborns were observed, and behavioral state was recorded for the half hour prior to circumcision. Blood was sampled via heelstick for plasma cortisol determination at the end of this observation period. The newborns were then circumcised and assigned randomly to one of 4 postcircumcision, blood-sampling time-point groups. The time points were 30, 90, 120, and 240 min following the beginning of circumcision. Behavioral state was observed during circumcision and for the half hour prior to taking the second blood sample. The results showed a return to baseline cortisol levels sometime prior to 240 min, with data from an additional group of 10 newborns indicating that the return occurred by 150 min. Behavioral distress during circumcision was associated with elevations in plasma cortisol at 30 and 90 min. Quiet sleep was correlated negatively with plasma cortisol prior to circumcision, and significant increases in quiet sleep followed circumcision, with the greatest increase corresponding to the period of most rapid reductions in cortisol.  相似文献   

Morphological decomposition supports word recognition in primary school children learning to read: evidence from masked priming of German derived words     

Elisabeth Fleischhauer  Gunnar Bruns  Michael Grosche 《Journal of Research in Reading》2021,44(1):90-109

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25-jähriges Jubiläum der „Arbeitsgemeinschaft Skilauf an Hochschulen“ (ASH)     

Gunnar Drexel 《Sportwissenschaft》2000,30(4):488-491

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A Perspective on the Intended Science Curriculum in Iceland and its ‘Transformation’ over a Period of 50 Years     

Meyvant Thorolfsson  Gunnar E. Finnbogason  Allyson Macdonald 《International Journal of Science Education》2013,35(17):2641-2665

In recent decades, a consensus has emerged among educators and scientists that all compulsory school students need good science education. The debate about its purpose and nature as a school subject in an emerging information society has not been as conclusive. To further understand this, it helps to examine how the science curriculum has transformed and what forces have shaped it as a core curricular area over time. This article sheds light on the transformation of the science curriculum for compulsory schools in Iceland in force from 1960 to 2010. Using criteria based on curriculum ideologies regarding the function of learners, instructors and subject matter in the learning process and the orientation of content and product versus process and development, it offers findings from content analysis of the intended science curriculum. The official curriculum was studied and conceptualised as it has evolved over time. The curriculum developers appear to have been striving for a compromise between conflicting views, resulting in what the authors of this article conceive as a ‘kaleidoscopic quilt’ of ideas over the period studied.  相似文献   

Sportwissenschaft interdisziplinär     

Gunnar Drexel 《Sportwissenschaft》2007,37(4):456-464

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