Design of a Posture Monitor Student: Ryan Sidari Supervisors: Olivia Lockwood Sherry Randhawa
Student: Ryan Sidari Supervisors: Olivia Lockwood Sherry Randhawa.
Dec 24, 2015
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Design of a Posture Monitor
Student: Ryan Sidari Supervisors: Olivia Lockwood
Sherry Randhawa
Lower back pain & causes Background Project objectives Progress so far Schedule & deliverables Summary
Introduction
80% of people will have a back problem at one point during their lives [1]
In South Australia, one quarter of compensation claims are a result of back injuries [2]
$40 million dollars to the state in workers compensation payouts [3]
Lower Back Pain
A cumulative injury to the lumbar region Stress on discs, ligaments and muscles over time
[4]
Forward bending leading cause [5]
Cause of Lower Back Pain
Load
Time
A cumulative injury to the lumbar region Stress on discs, ligaments and muscles over time
[4]
Forward bending leading cause [5]
Cause of Lower Back Pain
Load
Time
Tissue failure tolerance
Applied load
A cumulative injury to the lumbar region Stress on discs, ligaments and muscles over time
[4]
Forward bending leading cause [5]
Cause of Lower Back Pain
Load
Time
Tissue failure tolerance
Applied load
Margin of safety
A cumulative injury to the lumbar region Stress on discs, ligaments and muscles over time
[4]
Forward bending leading cause [5]
Cause of Lower Back Pain
Load
Time
Tissue failure tolerance
Applied load
FAILURE & INJURY
Physiotherapist driven “Physio-in-your-pocket” Monitor user’s posture and give
feedback Early versions of device
Background
Bluetooth Low power iPhone app:
◦ Real-time feedback◦ Reminder system◦ Review statistics◦ Calibration◦ Avatar
Ergonomics: ◦ Circuit board design◦ Chest and hip straps
Run trials to validate
Objectives
So Far... Research and decide on components Investigate Bluetooth and develop basic app
So Far... Research and decide on components Investigate Bluetooth and develop basic app
...What next?
Gantt Chart
Schedule
Gantt Chart
Schedule
Research
Gantt Chart
Schedule
Design
Gantt Chart
Schedule
Development
Gantt Chart
Schedule
Testing
Gantt Chart
Schedule
Results
Gantt Chart
Schedule
Final
The main deliverables for the project are the: ◦ Sensors◦ iPhone app◦ Results◦ Thesis
Deliverables
• Success of the project may be evaluated on two levels:1) Functionality of device/app2) Results from laboratory trials
Take home messages: Lower Back Pain not
only painful but costly to both the patient and state.
Reduce cause with “physio-in-your-pocket”
SIT & STAND UP STRAIGHT!
Summary
[1] Hill, D, Lucy, D, Tyers, C & James, L 2007, What works at work? Review of evidence assessing the effectiveness of workplace interventions to prevent and manage common health problems, Corporate Document Services,p35
[2] SafeWork SA 2013, Back Injuries: the leading cause of workplace claims, viewed 29 March 2013, <http://www.safework.sa.gov.au/contentPages/docs/resHealthyWorkplaceBackIntro.pdf>
[3] SafeWork SA 2007, The Cost, viewed 4 April 2013, <http://www.safework.sa.gov.au/contentPages/EducationAndTraining/HazardManagement/LiftingAndCarrying/liftCost.htm>
[4] Mitchell, T, O’Sullivan, PB, Burnett, AF, Straker, L & Smith A 2008, Regional differences in lumbar spinal posture and the influence of low back pain, BMC Musculoskeletal Disorders, vol 9
[5] Govindu, NK & Babski-Reves, K 2012, Effects of personal, psychological and occupational factors on low back pain severity in wokers, International Journal of Industrial Ergonomics, viewed 27 March 2013 <http://dx.doi.org/10/1016/j.ergon.2012.11.007 >
Questions?
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