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Articles by Robert Bjerknes
Puberty starts earlier
- Ingvild Særvold Bruserud,
- Ninnie Helén Bakken Oehme,
- André Madsen,
- Karen Rosendahl,
- Robert Bjerknes,
- Mathieu Roelants,
- Pétur B. Júlíusson
24.10.2022:
New Norwegian data show that the median age for the onset of puberty in Norwegian girls is six months earlier than previously believed. New growth curves for Norwegian girls and boys were published in 2009 (1). At that point, there were no data available for the pubertal development of children and...
New curves for body mass index among children and adolescents
- Pétur Benedikt Júlíusson,
- Jøran Hjelmesæth,
- Robert Bjerknes,
- Mathieu Roelants
02.10.2017:
The Norwegian curves for body mass index published in 2009 included international cut-off values for overweight and obesity in children and adolescents. Here, we present an update of this curve which now includes a cut-off for severe obesity, and argue why it should be used. The body mass index (BMI...
New reference charts for weight-related body measurements in children
- Bente Brannsether,
- Mathieu Roelants,
- Robert Bjerknes,
- Pétur Benedikt Júlíusson
22.11.2016:
Body mass index (BMI) is used to diagnose overweight and obesity. Charts for sex- and age-adjusted body mass index, based on data from the Bergen Growth Study, have been published previously. We now present new charts for waist circumference, waist-height ratio, triceps skinfolds and subscapular...
Growth charts for Norwegian children
- Pétur B. Júlíusson,
- Mathieu Roelants,
- Geir Egil Eide,
- Dag Moster,
- Anders Juul,
- Roland Hauspie,
- Per Erik Waaler,
- Robert Bjerknes
12.02.2009:
Measurements of European populations have shown a slow, positive trend in children’s growth – with a gradual increase in final height by 0.3 – 3 cm for every decade (1) – (3). This development is mainly due to better nutrition, improved socio-economic conditions and fewer infections (4). In...