In the current study, the effect of hand dominance was evident for the scapular posterior tilt, and the interaction of hand dominance and arm elevation angle significantly influenced the movement pattern of the scapular posterior/anterior tilt and upward/downward rotation.
In order to account for hand dominance in grip strength, if the non-dominant hand was injured, the percentage will be multiplied by 1.10; if the dominant hand was injured, the percentage will be multiplied by 0.90 [ 61].
The average limb volume of the contralateral hand was 480.4±81.5 ml, while the volume of the affected hand was significantly reduced (469.2±83.4 ml; p<0.05; p<0.001 after correction for hand dominance.
The groups were compared by the Chi-square test for sex, fracture classification, hand dominance, and retirement; Wilcoxon rank sum test for DASH and PRWE scores; and unpaired Student t-test for objective physical and radiographic measurements.
To test whether group differences in hand dominance could influence the results, activation levels for non-dominant hand and dominant arm movements were extracted from a homologous ROI contralateral to the dominant hand, in an age-matched sub-group of the control participants.
Since grip strength is related to personal factors such as age, gender, hand dominance and weight, we sought for a different modality of grip strength to correlate with the outcome of a patient questionnaire, because these questionnaires cannot be used in patients with intellectual or language difficulties, a growing group in our cosmopolitan world.
As the right leg was significantly stronger for both groups, hand dominance does not seem to be a good predictor of the stronger side for both dorsi-flexion and plantar-flexion.
Because these data come primarily from right-handed individuals, the relationship between left cerebral specialization for praxis representation and hand dominance remains unclear.
General health, age, gender, education, hand dominance (i.e. preferred hand for handwriting), body height and body weight are assessed with a self-administered questionnaire.
