title: The relationship between isometric trunk muscle endurance and physical activity related energy expenditure in healthy young adults.
abstract: BACKGROUND
  Despite the popularity of core stabilization, there is limited evidence as to the relationship between performance on tests of isometric trunk muscle endurance and physical activity levels in adults.
  
  
  OBJECTIVE
  To investigate the relationship between isometric trunk muscle endurance and physical activity related energy expenditure in healthy young adults.
  
  
  METHODS
  A total of 51 participants (24 female) participated in the study. Median age and body mass index were; 22 years (Min-max: 18-26 years) and 21.8 kg/m2 (Min-Max: 18.59-28.98 kg/m2), respectively. Participants completed the International Physical Activity Questionnaire. Isometric trunk muscle endurance was assessed with holding times of isometric trunk flexor, extensor, and lateral side bridge tests. Collected data were summarized based on median and interquartile ranges. The Spearman's correlation test was used to ascertain the relationship between isometric trunk muscle endurance and physical activity related energy expenditure.
  
  
  RESULTS
  There were no gender differences in holding times of the trunk flexor and trunk extensor endurance tests (p> 0.05). Males showed higher endurance scores for side bridge test than females (p< 0.001). No difference was found in physical activity related energy expenditure between males and females. No correlation was observed between isometric trunk muscle endurance and physical activity related energy expenditure for either females or males (p> 0.05).
  
  
  CONCLUSIONS
  According to our findings, trunk muscle endurance is not related to physical activity related energy expenditure in healthy young adults.
authors.forename: Deniz
authors.initials: D
authors.lastname: Bayraktar
authors.forename: Seher
authors.initials: S
authors.lastname: Özyürek
authors.forename: Arzu
authors.initials: A
authors.lastname: Genç
mesh_terms: D000293:Adolescent; D000328:Adult; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D010807:Physical Endurance / Q000502:physiology*; D060726:Torso / Q000502:physiology*; D055815:Young Adult
keywords: Trunk muscles; endurance; energy expenditure; physical activity; young adults