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MY22P01 - 22_1.0_22.08.2021
80
Operation
6.5.3
Determining the sitting position
The starting point for a comfortable posture is the
correct position of the pelvis. If the pelvis is in the
wrong position, it can cause different types of
pain, e.g. in the shoulder or back.
Figure 84: The pelvis is in the right position (green) or
incorrect position (red)
The pelvis is in the right position if the spine forms
an S-shape and a natural, easy arch.
The pelvis is positioned incorrectly if it tilts slightly
backwards. As a result, the spine becomes curved
and can no longer deflect to an optimal extent.
A suitable sitting position must be selected
beforehand depending on the pedelec type,
physical fitness and desired trip distance or
speed.
It is especially advisable to check and optimise
the sitting position once more before longer rides.
Position on roadster
Position on city bike
Angle of upper body
(black dashed line)
Upright, almost vertical
posture, back at an angle of
almost 90°.
Handlebars and handles are
very close to the upper body.
Slightly inclined upper body,
back at an angle of 60°–70°.
Angle between upper arm & upper body
(red line)
Extremely acute angle at
around 20°.
The upper arms are almost
parallel to the upper body.
The hands are simply placed
loosely on the handlebars.
An angle of 75°–80° is
optimum.
Many people prefer a smaller
angle of up to 60° as it requires
to less effort to support the
shoulders, arms and hands.
Saddle-handlebar height difference
(blue and green line)
>10
The handlebars are posi-
tioned far higher than the
saddle.
10…5
The handlebars are posi-
tioned higher than the saddle.
Benefits
The spine is intuitively moved
into its natural S-shape.
The strain on arms and hands
is very slight – no effort
required to support.
The upright position provides a
good overview in traffic.
Force can be applied to the
pedals when pedalling without
using much energy.
Disadvantages
Force is applied relatively inef-
ficiently to the pedals.
Weight rests exclusively on the
buttocks.
The spine slumps after a short
time for many people (pelvic
straightening).
The arms are often stretched
through to the high handlebars
– this leads to tense shoulders
and painful hands.
The spine tends to slump
quickly due to the “high posi-
tion”.
Fitness level and use
Low fitness level, occasional
cyclists.
Medium fitness level, city
cyclists.
Table 32: Overview of sitting positions
Содержание 22-15-2094
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Страница 208: ...MY22P01 22_1 0_22 08 2021 207 Documents D EBE D F A G A C...
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