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Recently, studies have pointed to greater knee joint laxity (KJL) as a potential contributor to the higher rate of ACL injury among female athletes with some researchers reporting that hormones influence joint laxity throughout the menstrual cycle. However, how changes in KJL during the menstrual cycle affect knee joint loading, which ultimately leads to ACL injury, has not been investigated.
Increased KJL was observed during ovulation in most female subjects; however, subject variations corresponding to hormonal fluctuations were detected. When this subject variation was correlated with
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Produktbeschreibung
Recently, studies have pointed to greater knee joint
laxity (KJL) as a potential contributor to the
higher rate of ACL injury among female athletes with
some researchers reporting that hormones influence
joint laxity throughout the menstrual cycle.
However, how changes in KJL during the menstrual
cycle affect knee joint loading, which ultimately
leads to ACL injury, has not been investigated.

Increased KJL was observed during ovulation in most
female subjects; however, subject variations
corresponding to hormonal fluctuations were
detected. When this subject variation was correlated
with knee joint mechanics, changes in KJL were
positively correlated with changes in knee internal
rotation and adduction loads. The findings indicated
that alterations in KJL lead to increases in knee
joint loads in selected high risk movements.

We conclude that the relationship between the
menstrual phase and knee joint loads cannot be
simply generalized without knowing an individual s
changes in KJL. The influence of hormones on KJL was
subject-specific, possibly explaining why some
female athletes are more prone to ACL injuries than
others.
Autorenporträt
Sang Kyoon Park, PhD: Studied Biomechanics at the University of
Calgary, Canada. Research Team Manager at the Footwear
Industrial Promotion Center, Busan, South Korea.