Journal of Sensors / 2017 / Article / Tab 1

Research Article

A Study on the Effects of Heavy Backpack and Development of a Preventative Prototype

Table 1

Curvature of different parts of spine with different weights of backpacks at different position.

ConditionMean
curvature (degree)
Standard deviation value

Thoracic angle0–10% body weight [3].47.413.60.157
Body weight > 10% [3].43.812.70.157

Lumbar lordosis angle0–10% body weight [3].26.614.30.266
Body weight > 10% [3].23.911.70.266

Trunk flexion0–25% body weight [9].9.66–3.067.87–2.06<0.001
After exercise [10].10.54.50.04
Body weight
< 10% [8].
4.21.90.179
Stand, body
weight = 0% [11]
−8.10
00.25
Stand, body weight < 10% [11].2.150.15
2.40
Stand, body weight > 10% [11].6.20.6
50
Walk, body weight = 0% [11].0.55.2
8.43.6
Walk, body weight < 10% [11].9.94.6
9.752.05
Walk, body weight > 10% [11].154.8
7.86.1
Run, body weight = 0% [11].10.92.2
10.64.7
Run, body weight < 10% [11].231.1
17.152.88
Run, body weight > 10% [11].21.63.2
10.95
2.65

Sacral angleBody weight
< 10% [8].
24.59.80.054
Body weight
> 10% [8].
19.510.20.054