Page 7 - William Brown 2017

Information, Inspiration and Influences

Anthropometric and Ergonomic Data

Considerations

When designing a product that is intended to be used by a variety of people,
you need to consider sizes. I plan to have my product be attached to the user,
for example straps over the shoulders to allow them to get into the correct body
position whilst having to move against the resistance. Therefore, I need to get
an estimate on the average size of a male and female. The biggest problem I’ll
be facing is that rugby is a game for all sizes. Size will range from small to extra
large whilst depending on age groups. Not only do I need to gather data for
body sizes but also I need to look at resistance strengths. There will be an
element of resistance in the product as it helps to replicate movement in game
situations and also help to reduce risk of injury by strengthening the muscles Shoulder width 720mm
groups worked. I will need to consider which resistance to use so that it works Max- 50cm
for all users. I might have to look at having a changeable resistance setting, but Av.- 40cm
first I need to gather the data. Min- 35cm

Female
Max Height: 6'9ft
Av. Height (UK): 5'4ft The resistance band charts are useful data to have gathered because
Male Min Height: 5'ft I plan to use resistance bands as the main part of my product. The
Max Height: 7ft function of the bands in my design is to provide a strength related
Av. Height (UK): 5'9 As the consumer’s physical strengths will training to target muscles used in a jackal and this will strengthen
Min Height: 5' vary, it means getting a general strength of those muscle groups which will in turn prevent injury. Along with the
resistance to allow for effective force on strength benefits, the bands will also be a substitute for the
each individual will be vital for the product to movements that are replica in a game. For example, an opponent
succeed. Ways around this problem would be attempting a clear out by rolling the jackler.
to allow for the bands to be interchangeable
Shoulder width so that the consumer can change the
Max- 50cm difficulty of resistance when they choose.
Av.- 40cm This means that the bands need to be easily
Min- 35cm assembled and disassembled.

Resistance bands & therabond pound per
power to weight:
Formula: max. band resistance (lbs) x 2.2
(2.2lbs=1kg)= (body weight (kg)/ans)= pounds per
kg force x weight (kg) = power to weight (lbs)
required

Weight range: 50kg-150kg (both male and female)  Minimum resistance needed: (tan band) 2.4lbs x
2.2lbs= 5.28 --> 60kg (av. minimum weight for
both genders)/31.24= 1.92 ppf --> 60 x 1.92=
Ergonomics 115.2lbs
The way in which the jackal trainer interacts with the consumer is key in order to be a success. In  Medium resistance needed: (blue band)5.8lbs x
order to get the product to interact with the consumer I have found the average size for an adult 2.2lbs= 12.75 --> 85kg/12.76= 6.6 pounds per
male and female. I plan to target age groups 14-upwards the sizes of these ages will be anything force --> 85 x 6.6= 535.5lbs This equations list tells me the minimum, medium and maximum
from 5ft3 to 7ft in height and from 50kg-150kg in weight. The shoulder width is an important  Maximum resistance needed: (black amount of resistance needed to withstand or apply the appropriate
measurement to get because the jackal trainer might need the user to hit a pad with their band)14.2lbs x 2.2lbs= 31.24 --> 150kg (max amount of resistance to the user, based on their weight. It is only a
shoulder as the main function. My product needs to allow for adjustments or even if it were to be a rugby player weight)/31.24= 4.80ppf --> 150 x guideline, but will be helpful when developing the rugby jackal
seated product then it should allow a base for most sizes and weights. 4.8= 720lbs trainer in the future.

William Brown 6