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TRANSCRIPT
Research Collection
Conference Paper
Exercise specific Loading Conditions and Movements of Squats,Lunges Goodmornings and Deadlifts
Author(s): Schellenberg, Florian; Taylor, William R.; Lorenzetti, Silvio
Publication Date: 2015
Permanent Link: https://doi.org/10.3929/ethz-a-010550455
Rights / License: In Copyright - Non-Commercial Use Permitted
This page was generated automatically upon download from the ETH Zurich Research Collection. For moreinformation please consult the Terms of use.
ETH Library
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Florian Schellenberg, William R. Taylor and Silvio Lorenzetti
Institute for Biomechanics, ETH Zurich, Switzerland [email protected]
EXERCISE SPECIFIC LOADING CONDITIONS AND MOVEMENTS
OF SQUATS, LUNGES, GOODMORNINGS AND DEADLIFTS
28.06.2015 Florian Schellenberg | [email protected] 1
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Introduction – Background - Strength Training
WHO suggestions:
| | 28.06.2015 Florian Schellenberg | [email protected] 3
Introduction – Background - Strength Training
WHO suggestions:
Frequent injuries
during fitness training (Müller, R., 1999)
Reasons:
overloading (45.6%)
wrong execution of the exercise (21.1%) (Müller, R., 1999)
24.4%
16.6%
11.0%
8.8%
0% 10% 20%
shoulder
back
thigh
knee
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Joint kinematics and loading
conditions in knee, hip and lumbar
spine
Squat, Split Squat (Lunges),
Deadlifts and Goodmornings
Specific and effective training
programs to athletes or injury based
rehabilitation techniques to patients
Low risk of injury
28.06.2015 Florian Schellenberg | [email protected] 4
Aim
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12 cam opto electronic
system (50 Hz / 100 Hz)
Marker-Set: 55 &
22 on back & 2 on barbell
2 Force Platforms (2000 Hz)
Squat (sres vs. sunr)
Split Squat (Lunges)
Deadlifts (DL)
Goodmornings (GM)
28.06.2015 Florian Schellenberg | [email protected] 5
Method – Strength exercises
Schütz, 2014 Schellenberg, 3DAHM, 2014 Schellenberg, 2013
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Kinematic
Cloud approach
Functional determined center of rotation (fCoR)
Range of Motion (RoM)
Kinetic
Maximal external joint moment normed with bodyweight
Quasistatic approach
28.06.2015 Florian Schellenberg | [email protected] 6
Method – Evaluation
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Results – Knee
Kinematic RoM:
High in DLs and Squats
Small in GM
Kinetic:
DLs not weight dependent
External extension
moment in GM
Highest Moment in
Lunges (rear leg)
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28.06.2015 Florian Schellenberg | [email protected] 8
Results – Hip
Kinematic RoM:
High in DLs and Squats
Small during Lunges
Kinetic
External flexion moments
except rear leg during
Lunges => Quadriceps
DLs (50%) > Lunges
(front leg) > GM
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28.06.2015 Florian Schellenberg | [email protected] 9
Results – Back (L4/L5)
Kinematic RoM
Similar
Sres > Sunr (List, 2013)
Attention to reversal
point (eccentric ->
concentric)
Kinetic
High moments during
DLs
GM > Squats
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Hip Knee
28.06.2015 10
Conclusion
Due to the training
goal, coach or athlete
should use these
plots, to choose
appropriate exercises
Examples:
Strengthen Hamstrings
(H:Q Ratio): GMs
Strengthen front side:
Rear leg Lunges
Sport specific examples
Florian Schellenberg | [email protected]
Knee Hip
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Thank you for your attention
Questions?
28.06.2015 Florian Schellenberg | [email protected] 11
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