Abstract
The pitching motion is an asymmetric action by which coordination of scapular rotation in the dominant arm might be affected in time and in comparison with the non-dominant arm. The study aimed to compare asymmetry and the evolution of scapular upward rotation over a one-year period. Data were collected twice, before and after a one-year period, from 92 participants (age = 15.1 SD 1.4 years, body height = 177.3 SD 10.9 cm, body weight 69.2 SD 14.5 kg). Scapular motion was tracked at different glenohumeral angles of elevation in the scapular plane: anatomical position (0°), 45°, 90° and 135°. Scapular upward rotation was calculated as the angle between the spinae scapula and the spine. Scapular upward rotation of the dominant arm was 5.1° (95% CI: 2.1°−8.1°) more compared to the non-dominant arm. Age group or glenohumeral angles of elevation did not affect this difference. Scapular upward rotation of the dominant arm decreased 1.9° (95% CI: −0.5° to 4.3°) after a one-year period, however, neither this observation, nor the interaction with age group or elevation angle was significant. These findings may indicate that pitchers could be at risk to develop shoulder injuries especially those that have been associated with scapular asymmetry.
| Original language | English |
|---|---|
| Pages (from-to) | 57-62 |
| Journal | International Biomechanics |
| Volume | 5 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2018 |
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Keywords
- baseball
- overhead throwing
- Pitching
- scapular dyskinesis
- scapular upward rotation
Cite this
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Asymmetry and evolution over a one-year period of the upward rotation of the scapula in youth baseball pitchers. / van der Graaff, Erik; Kom, Bengt; van Dis, Femke; Gasparutto, Xavier; Hoozemans, Marco; Veeger, Dirkjan.
In: International Biomechanics, Vol. 5, No. 1, 2018, p. 57-62.Research output: Contribution to Journal › Article › Academic › peer-review
TY - JOUR
T1 - Asymmetry and evolution over a one-year period of the upward rotation of the scapula in youth baseball pitchers
AU - van der Graaff, Erik
AU - Kom, Bengt
AU - van Dis, Femke
AU - Gasparutto, Xavier
AU - Hoozemans, Marco
AU - Veeger, Dirkjan
PY - 2018
Y1 - 2018
N2 - The pitching motion is an asymmetric action by which coordination of scapular rotation in the dominant arm might be affected in time and in comparison with the non-dominant arm. The study aimed to compare asymmetry and the evolution of scapular upward rotation over a one-year period. Data were collected twice, before and after a one-year period, from 92 participants (age = 15.1 SD 1.4 years, body height = 177.3 SD 10.9 cm, body weight 69.2 SD 14.5 kg). Scapular motion was tracked at different glenohumeral angles of elevation in the scapular plane: anatomical position (0°), 45°, 90° and 135°. Scapular upward rotation was calculated as the angle between the spinae scapula and the spine. Scapular upward rotation of the dominant arm was 5.1° (95% CI: 2.1°−8.1°) more compared to the non-dominant arm. Age group or glenohumeral angles of elevation did not affect this difference. Scapular upward rotation of the dominant arm decreased 1.9° (95% CI: −0.5° to 4.3°) after a one-year period, however, neither this observation, nor the interaction with age group or elevation angle was significant. These findings may indicate that pitchers could be at risk to develop shoulder injuries especially those that have been associated with scapular asymmetry.
AB - The pitching motion is an asymmetric action by which coordination of scapular rotation in the dominant arm might be affected in time and in comparison with the non-dominant arm. The study aimed to compare asymmetry and the evolution of scapular upward rotation over a one-year period. Data were collected twice, before and after a one-year period, from 92 participants (age = 15.1 SD 1.4 years, body height = 177.3 SD 10.9 cm, body weight 69.2 SD 14.5 kg). Scapular motion was tracked at different glenohumeral angles of elevation in the scapular plane: anatomical position (0°), 45°, 90° and 135°. Scapular upward rotation was calculated as the angle between the spinae scapula and the spine. Scapular upward rotation of the dominant arm was 5.1° (95% CI: 2.1°−8.1°) more compared to the non-dominant arm. Age group or glenohumeral angles of elevation did not affect this difference. Scapular upward rotation of the dominant arm decreased 1.9° (95% CI: −0.5° to 4.3°) after a one-year period, however, neither this observation, nor the interaction with age group or elevation angle was significant. These findings may indicate that pitchers could be at risk to develop shoulder injuries especially those that have been associated with scapular asymmetry.
KW - baseball
KW - overhead throwing
KW - Pitching
KW - scapular dyskinesis
KW - scapular upward rotation
UR - http://www.scopus.com/inward/record.url?scp=85053343438&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053343438&partnerID=8YFLogxK
U2 - 10.1080/23335432.2018.1499441
DO - 10.1080/23335432.2018.1499441
M3 - Article
VL - 5
SP - 57
EP - 62
JO - International Biomechanics
JF - International Biomechanics
SN - 2333-5432
IS - 1
ER -