0000000000757920
AUTHOR
Thomas Birkedal Stenqvist
Relative Energy Deficiency in Sport (RED-S) among Norwegian male athletes. Energy availability, health, and performance among male athletes at different age and performance levels
Paper III is excluded from the dissertation until it will be published. Relative Energy Deficiency in Sport (RED-S) is a syndrome where low energy availability (LEA) has a negative impact on health [e.g., endocrine and metabolic alterations, reproductive dysfunction, impaired bone mineral density (BMD)] and performance. In females, the development and prevalence of RED-S have been well-investigated. However, research on males of all ages and performance levels is lacking. The overall aim of this dissertation was therefore to investigate RED-S among Norwegian male athletes at different age and performance levels. Three independent studies have been performed, and three original papers are in…
Prevalence of relative energy deficiency in sport among well-trained male Norwegian cyclists and long-distance runners
Masteroppgave i idrettsvitenskap - Universitetet i Agder 2016 Introduction Relative Energy Deficiency in Sport (RED-S) links low and reduced energy availability (EA) with negative health and performance consequences, though not well investigated in male endurance athletes. The aim of this study was to investigate the prevalence of RED-S and associated health consequences in well-trained male endurance athletes. Methods Forty-one subjects, cyclists (n=21) and runners (n=20) [age: 40 (31-45) years; BMI: 23.5 (21.4-24.0) kg/m2; body-fat: 14.0% (10.0-16.5%); training volume: 12 (9-16) h/week presented as median + interquartile range] were recruited. Protocol included assessment of bone health, …
Energy balance during outdoor education winter training: a pilot study
Learning in the mountains during winter prepares upcoming guides for tough environments by placing demands on their energy intake and enabling them to cope with a complex environment. However, few studies have explored energy intake and expenditure in outdoor education. Thus, energy intake during a 24-hour winter mountain course was investigated in a Norwegian educational context, where students must absorb large volumes of information in a challenging environment. Twenty university students (11 men, 9 women) underwent body composition, weighed energy intake, and accelerometry-based energy expenditure measurements. Overall, the students had an energy deficit of>2,300 kilo-calories/day, corr…