Background: The squat is one of the most used exercises in the field of strength and
conditioning. It is included as a core exercise in many sports training programmes to
enhance athletic performance due to its biomechanical and neuromuscular similarities
of a wide range of athletic movements. The barbell squat commonly used by athletes
participating in resistance training and it is generally performed using regular athletic
shoes or specially designed weightlifting shoes. However it is now getting more
common to perform the barbell back squat in barefoot or in barefoot-inspired foot
wear. Weightlifting shoes may be well known to weightlifters but to the noncompetitive
lifters and professional athletes they are in general unfamiliar. It is
believed that the structure of the weightlifting shoe supports proper squat mechanism.
There is however limited scientific data reporting on the use of weightlifting shoes
and therefore, it may be needed to investigate how weightlifting shoes affects the
lower body lifting kinematics in the back squat compared to other conditions. Aim:
The aim of the study was to compare the kinematic differences that appears in the
sagittal plane when performing a barbell back squat wearing weightlifting shoes and
barefoot. Method: Fifteen healthy participants (n=15) completed the study. The study
included the barbell back squat in three sets of three repetitions on 50, 60 and 70% of
the participant’s 1RM. The participants performed the movement in both weightlifting
shoes and barefoot in an order randomly chosen and all movements was recorded with
a digital camera from the sagittal plane. Results: The results showed that the angles
were greater in the weightlifting shoe condition on all percentage. The results showed
that there was no statistical significance in the hip angle at 50% of 1RM (p= 0,370) or
at 70% (p = 0,053) but a statistical significance in the hip angle at 60 % (p = 0,028).
The results showed no statistical significance in the ankle angle at 50% of 1RM (p =
0,997), 60% (p = 0,182) or 70 % (p = 0,332). Conclusion: Findings from this study
did not demonstrate that there was a significant difference between performing a
barbell back squat in weightlifting shoes and barefoot. More research is needed to
investigate and compare more variables in the difference between performing a
barbell back squat wearing weightlifting shoes and barefoot.
2016. , 15 p.