Study on effect of backrest thickness to lumbar muscle fatigue during computer work.
- Author:
Yan-di HUANG
1
;
Sheng WANG
;
Tong WANG
;
Li-hua HE
;
Yuan-feng LIU
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Female; Humans; Lumbosacral Region; Male; Muscle Fatigue; Muscle, Skeletal; physiology; Occupational Health; Posture; Sprains and Strains; etiology; prevention & control; Young Adult
- From: Chinese Journal of Industrial Hygiene and Occupational Diseases 2012;30(2):113-114
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the relationship between backrest thickness and lumbar muscle fatigue so as to confirm the fitting backrest thickness.
METHODTwenty subjects coming from university seated at a computer workstation in three backrest thicknesses: 4, 7 and 10 cm. The time that the subjects reported the lumbar muscle fatigue was collected during each trial and subjective appraise was collected at the end of the entire protocol.
RESULTSThe MF value decreased and lumbar muscle felt fatigue in all three backrest thickness. Subject could feel fatigue more late [(45.0 +/- 10.8) min] and subject felt more comfort at 7 cm thickness.
CONCLUSIONIt is better to relive computer worker lumbar muscle fatigue when the backrest thickness was kept on 7 cm. Work break was needed because one hour work could cause muscle fatigue.
