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Q ANGLE AND Q FACTOR
Q Angle represents the degree of angle formed between
the quadriceps and the patellar tendon. Because women
have wider hips, they tend to have a wider Q Angle. The
angle is measured when the foot is in the bottom-center
position of the pedaling stroke or assessed while looking
at the knees from the front while standing. There is no
scientific data that suggests an ideal angle in relation to
indoor or outdoor cycling.
Q Factor (also known as Tread) represents the distance
between the two pedal cranks on a bike. Q Factor
separation varies from bike to bike. For example, indoor
bikes, road bikes and mountain bikes will all have slightly
different Q Factors. Road riders with narrower hips may
prefer a smaller Q Factor in order to generate more power.
However, participants in indoor cycling classes come
in all shapes and sizes. Keiser chose a Q Factor to best
represent the majority of indoor cyclists. Regardless of Q
Angle or Q Factor, alignment is key and instructors should
always cue riders to maintain a proper alignment from the
hip to the knee to the second toe.
POSITION ON THE SADDLE
Keiser designed its bike saddle with a rider’s comfort in mind. Finding a comfortable position in the
saddle may initially be challenging for some riders. However, correct positioning plus logging riding time
will help. The ischial tuberosities (the SIT bones) tend to be more widely spaced in women than men.
Therefore, men and women find comfort differently on the saddle. Ideally, the widest part of the saddle
should support the SIT bones and the front of the saddle (the narrow part) is meant to help control the
riding position. The nose of the saddle may bother riders the most if it compresses nerves or irritates
the soft tissues. To help riders find greater comfort, remind riders to align their SIT bones back over the
saddle, to maintain a neutral pelvic position and to take breaks as needed (i.e., go into a standing climb).
Cycling fast and out of control may also cause greater discomfort due to the amount of uncontrolled
bouncing that can occur while seated. Remind riders to ride with control. Cycling shorts or gel seat
covers may also help.
TECHNICAL
ASPECTS
Male Female
Tread/
Q Factor
