Evaluation of motorcyclist's discomfort during prolonged riding process with and without lumbar support

Abstract

Objective: The primary aim of this study is to examine the effects of a backrest: using a prototype of a lumbar support presented in author's earlier study on the discomfort rating of the body parts of motorcyclist. Methods: One hundred motorcyclists participated in this study, all in good physical condition and with no immediate complaint of musculoskeletal disorders. Each participant was asked to sit for 2 hours on a motorcycle in two different sessions (with and without the lumbar support) in a controlled room environment. At every 15 minutes interval the participants were required to rate their discomfort level on the Borg's CR-10 questionnaire. Results: The rate of discomfort level (in all body parts) decreased over time during the testing period with the prototype. In terms of the discomfort 'break point', participants identified low back and upper back as the most affected body parts prior to comfort changes during the testing period with the use of the prototype. Conclusions: The use of this prototype provides a protective mechanism for the motorcyclist's musculoskeletal system, particularly the spinal column. Therefore, this prototype is capable of providing ideal posture while simultaneously enhancing the comfortability of the motorcyclist during the riding process (by reducing discomfort).

Incidence of musculoskeletal disorders in police officers riding motorcycles while on duty

“…Najczęściej dotyczy on okolicy pośladków, górnego i dolnego odcinka kręgosłupa oraz ramion. Nieco rzadziej występuje w obrębie głowy i szyi oraz w kończynach górnych [5,6].…”

“…sztywności mięśni, która może być przyczyną dolegliwości ze strony układu ruchu podczas jazdy lub po jej zakończeniu. Ból zależy od pozycji, jaką przyjmuje motocyklista, oraz od budowy motocykla i dotyczy przede wszystkim kręgosłupa oraz mięśni przykręgosłupowych [5,6].…”

Calf massager: Intervention for body muscle discomfort during prolonged standing

“…Before they decided to voluntarily participate in the study, all the respondents had answered a presurvey questionnaire that consisted of age, heavy activity, sports activity, sleep hours, BMI, and health information. Finally, the procedures were explained, and the informed consent letter was distributed (Karuppiah et al, ). The respondents were informed that they could withdraw from the study at any time if they no longer wished to participate in the study.…”

“…This is also a factor that can contribute to musculoskeletal disorders as respondents that do heavy work while at work might experience other leading factors other than prolonged standing that may also cause ergonomic discomfort. Approximately 70% of the respondents are physically active and involved in sports activities, which proves F I G U R E 2 The body chart discomfort using Borg's CR-10 scale (Borg, 1982;Karuppiah et al, 2012) T A B L E 1 Sociodemographic of workers who involved in the study (n = 100)…”

Evaluate the Associated Deformities in Motor Bike Riders

“…Backrest support helps in reduction in shift of load and stress of upper body segments i.e. arm, head and chest region even gravity works to lower body segments which decrease the intradiscal compressive forces and helps in providing comfort on back musculature 8,4,9,10,11 . In addition due to change of spine mechanics pelvic mechanics also is disturbed like "lumbosacral rhythm" may be decrease or increase angles.…”