Normalization of EMG signals: to normalize or not to normalize and what to normalize to

M Halaki, K Ginn - … in electromyography analysis-a perspective on …, 2012 - books.google.com
Electromyography (EMG) has been around since the 1600s [1]. It is a tool used to measure
the action potentials of motor units in muscles [2]. The EMG electrodes are like little …

Superior humeral head migration occurs after a protocol designed to fatigue the rotator cuff: a radiographic analysis

JN Chopp, JM O'Neill, K Hurley… - Journal of shoulder and …, 2010 - Elsevier
HYPOTHESIS: Awkward postures and repetitive work have been suggested to lead to
shoulder fatigue, which may in turn decrease the subacromial space. The aim of this study …

Influence of fatigue on upper limb muscle activity and performance in tennis

S Rota, B Morel, D Saboul, I Rogowski… - … of Electromyography and …, 2014 - Elsevier
The study examined the fatigue effect on tennis performance and upper limb muscle activity.
Ten players were tested before and after a strenuous tennis exercise. Velocity and accuracy …

Influence of bench angle on upper extremity muscular activation during bench press exercise

JD Lauver, TE Cayot… - European journal of sport …, 2016 - Taylor & Francis
This study compared the muscular activation of the pectoralis major, anterior deltoid and
triceps brachii during a free-weight barbell bench press performed at 0°, 30°, 45° and–15° …

Specific prime movers' excitation during free-weight bench press variations and chest press machine in competitive bodybuilders

G Coratella, G Tornatore, S Longo… - European Journal of …, 2020 - Taylor & Francis
The current study compared the muscle excitation in free-weight bench press variations and
chest press machine. Ten competitive bodybuilders were recruited. The EMG-RMS …

The specificity of fatiguing protocols affects scapular orientation: Implications for subacromial impingement

JN Chopp, SL Fischer, CR Dickerson - Clinical Biomechanics, 2011 - Elsevier
BACKGROUND: Shoulder impairments are often associated with altered scapular
kinematics. As muscles control scapular movement, functionally altering muscle …

Reliability of EMG normalisation methods for upper-limb muscles

S Rota, I Rogowski, S Champely… - Journal of sports …, 2013 - Taylor & Francis
The study investigated different electromyographic (EMG) normalisation methods for upper-
limb muscles. This assessment aimed at comparing the EMG amplitude and the reliability of …

Optimal combinations of isometric normalization tests for the production of maximum voluntary activation of the shoulder muscles

F Dal Maso, P Marion, M Begon - Archives of physical medicine and …, 2016 - Elsevier
Objective To identify the smallest combinations of maximum voluntary isometric contraction
(MVIC) tests that produce near-maximum voluntary activation (MVA) for a large proportion of …

Spatial dependency of shoulder muscle demands in horizontal pushing and pulling

A McDonald, BR Picco, AL Belbeck, AY Chow… - Applied Ergonomics, 2012 - Elsevier
Pushing and pulling account for nearly half of all manual material handling tasks. The
purpose of this investigation was to develop a 3-D spatial muscle activity map for the right …

Revision of the shoulder normalization tests is required to include rhomboid major and teres major

KA Ginn, M Halaki, I Cathers - Journal of Orthopaedic Research, 2011 - Wiley Online Library
Abstract The four “Shoulder Normalization Tests” were found previously to be a
parsimonious set of isometric tests that produce maximal voluntary isometric contractions …