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Clinical Trial Summary

Eating disorders (ED) are serious mental illnesses with high mortality rates and significant impact on an individual's quality of life. These disorders are characterized by preoccupation of weight and shape, leading to restrictive eating behavior and compensatory behaviors (purging and excessive/compulsive exercise). Comorbidities with mental health problems are common. Athletes in leanness-focused sports report higher levels of EDs compared to athletes from sports without such focus . Energy Availability (EA) has been suggested the key variable in "Relative Energy Deficiency in Sports" (RED-S) with studies reporting impairment of reproductive function and bone formation. Climbing is a weight sensitive sport where athletes generally, benefit from a lean body shape and low weight, a risk factors for ED. Therefore, climbing athletes can be expected to be at high-risk to develop these conditions. To our knowledge, there are no studies on the prevalence and magnitude of EDs among climbers. Due to the overrepresentation of EDs reported in sports and the poor treatment prognosis, early detection and prevention of ED symptoms are essential. The present study will study the prevalence of ED symptoms, changes over time and trajectories of key variables along with related problem areas such as bone health and mental health problems in order to take steps towards tailored strategies for the prevention of EDs in climbing. The overall purpose of the project is to study prevalence and changes over a two-year period (with a planned follow-up period of up to five years) of eating disordered (ED) symptoms, mental health problems, overuse injuries, bone health as well as indications of relative energy deficiency (RED-S) in elite vs. sub-elite Swedish climbers. Climbers will be compared to a group of normal controls. Further, differences will be studied in groups with high vs. low levels of EDs, comparing occurrence of mental health problems, overuse injuries and bone health. Trajectories of mentioned variables over time will be analyzed.


Clinical Trial Description

Study objectives: The overall purpose of the project is to study prevalence and changes over a two-year period (with a planned follow-up period of up to five years) of eating disordered (ED) symptoms, mental health problems, overuse injuries, bone health as well as indications of relative energy deficiency (RED-S) in elite and sub-elite Swedish climbers. Climbers will be compared to a group of normal controls. Further, differences will be studied in groups with high vs. low levels of EDs, comparing occurrence of mental health problems, overuse injuries and bone health. Trajectories of mentioned variables (with the exception of bone health) over time will be analyzed. Specific research questions: A) BASELINE To determine the prevalence of disordered eating behaviors, mental health problems, compulsive training, self-reported symptoms of LEA, overuse injuries and bone density in advanced to elite climbers compared to controls. Are there gender differences among climbing athletes as far as ED symptoms, body image, compulsive training, perfectionism, mental health problems, sleep quality and overuse injuries? Do climbing athletes at higher levels of competition (elite vs. advanced) report differing levels of symptoms related to disordered eating behaviors, mental health problems, compulsive training, self- reported symptoms of LEA, overuse injuries and bone density than normal controls? Are there difference between climbing athletes reporting differences in ED symptoms respectively with regards to bone health as measured by Dual-Energy X-ray Absorptiometry (DXA). B) FOLLOW UP To study the trajectories of mentioned variables over time and examine the association between modifiable risk factors and ill health and outcome measured by DASS21, EDEQ and OSLO SPORTS OVERUSE INJURIES QUESTIONNAIRE. Study design: The study design is longitudinal using a web-based questionnaire with four measures over a two-year period (baseline, 6-, 12- and 24 months) and additional follow-ups at 3 and 5 years after baseline. The whole eligible population of Swedish climbers on elite- or sub-elite levels of competition will be invited to participate in the study. Participants will be both male and female, 13 years and older. There is a minimum of 40 climbers eligible at elite level and a minimum of 80 climbers at sub-elite level of competition. A non-elite athlete control group (n matched of the climbing group) from the general population, will be invited to participate in the study. In addition to the web-based questionnaire, participants will be invited to the measurement of bone health using DXA at the baseline measurement. Source population: The whole eligible population of Swedish climbers on elite- or sub-elite levels of competition will be invited to participate in the study. Participants will be both male and female, 13 years and older. Sample size: To our knowledge, no previous research has been presented and since the climbing population is small, and the expected outcome measures (ED-symptoms, mental health problems, injuries and bone health) are unknown, we will not be able to carry out power calculations. However, based on similar injury research by one of the co-applicants, a power calculation was estimated on standard deviation of 1.0, significant level set to 0.05, and statistical power 0.80. The study needed 38 participants in each group to detect estimated group differences. We will therefore include at least 40 in each group. Data collection The study has been endorsed by the Swedish Climbing Federation. Study information will be distributed via the federation to national teams and clubs asking them to distribute the web-based survey link (computed by the research team) to the climbing athletes and controls. The web-based survey will explain the purpose, aims, and ethical rights, as well as how to complete the questionnaire. Further, information regarding, and an invitation to participate the DXA-scan will be included with this information. Upon electronic consent by both parent and athlete (or just athlete if of consenting age (15 y o a)), access to the multi-section questionnaire will be granted. Contact details of the researchers will be available in case of difficulties comprehending the questions. Following completion, the participants' data will be stored at a secure database for analysis. Participants will be ensured of the confidentiality of the study and will be free to withdraw from the study at any time. Appointments for DXA-scans will be set up after informed consent has been established for the study as a whole. Exposures Rock-climbing Outcomes Eating Disorders: The Eating Disorders Questionnaire (EDE-Q 6.0) will be used and consists of four subscales: restraint, eating concern, shape concern and weight concern, addressing core dimensions of eating disorders (Berg et al., 2012). Overuse injuries: The Oslo Sports Trauma Research Center Overuse Injury Questionnaire (OSTRC-O; Clarsen et al., 2020) will be used and measures athlete's self-reported a) participation in sport, b) modified training/competing,c) performance and d) pain in a 4-grades scale from full participation to could not participate due to problems (of injury). Perfectionism: The Frost Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart & Rosenblate, 1990) will be used, utilizing the subscales of personal standards (PS) and concern over mistakes (CM). Compulsive Exercise: Weight loss behaviors and emotion regulation using training is measured with Compulsive Exercise Test (CET; Taranis, Touyz & Meyer, 2011). The subscales included are: "Weight control exercise" (WCE) and "Avoidance of negative affect and rule driven behavior" (ANARDB). Body Image: The brief version of the 8 item Body Shape Questionnaire, (BSQ-8C; Welch, Lagerström & Ghaderi, 2012) will be used. Symptoms of mental health problems are measured by the Depression Anxiety Stress Scale (DASS-21; Lovibond & Lovibond, 1995). Sleep quality: The Pittsburg Sleep Quality Index (PSQI; Carpenter & Andrykowski,1998) will be used and includes 19 items addressing seven subscales: sleep duration, efficiency, quality, latency, medication use, disturbances and daytime dysfunctions. Basic symptoms indicative of RED-S will be assessed by 17 questions about meal pattern, menstrual function and injuries. These questions were developed and previously used with a Swedish figure skating population, 13 years and older (n=224; Edlund, 2020). Dual-Energy X-ray Absorptiometry (DEXA) will be carried out on both athletes and controls, comparing bone mineral density between the groups at baseline. Data analysis and statistics: Group comparisons between climbers and controls examining the difference between the above-mentioned variables between the study groups. Specific tests will be depending on the type of data, distribution of the variables and the size of the study population. Group comparisons examining gender differences among climbers regarding the above-mentioned variables. Specific tests will be depending on the type of data, distribution of the variables and the size of the study population. Group comparisons examining differences among climbers of different level (Elite and advanced) regarding the above-mentioned variables. Specific tests will be depending on the type of data, distribution of the variables and the size of the study population. Associations in climbers between ED symptoms with regards to bone health as measured by Dual-Energy X-ray Absorptiometry (DXA). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05587270
Study type Observational
Source Göteborg University
Contact Mikael Sansone, M.D, Ph.D.
Phone +46709474257
Email mikael.sansone@gmail.com
Status Recruiting
Phase
Start date February 15, 2022
Completion date December 1, 2025

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