Relationship Between Scapular Position During Maximum Voluntary Isometric Contraction Of Shoulder Flexion and Scapular Position During Baseball Pitching
Objective: This study aimed to investigate the between scapular position during maximal isometric shoulder flexion and scapular position during baseball pitching.Methods: We recruited fifteen collegiate baseball players and used an optical motion tracking system to assess scapular position. The scap...
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| Published in | Japanese Journal of Sports Physical Therapy Vol. 3; no. 1; pp. 6 - 12 |
|---|---|
| Main Authors | , , , , , , , , , , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
Japanese Society of Sports Physical Therapy
2025
一般社団法人 日本スポーツ理学療法学会 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 2758-4356 |
| DOI | 10.57495/jjspt.3.1_6 |
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| Abstract | Objective: This study aimed to investigate the between scapular position during maximal isometric shoulder flexion and scapular position during baseball pitching.Methods: We recruited fifteen collegiate baseball players and used an optical motion tracking system to assess scapular position. The scapula position during maximal isometric shoulder flexion was defined as the amount of change in the scapular internal rotation, downward rotation, and anterior tilt angle from the time of resting position to the time of maximum muscle exertion. We assessed scapular position at foot contact (FC), maximum shoulder external rotation (MER), and ball release of pitching motion.Results: The amount of change in the scapular internal rotation angle during maximal isometric shoulder flexion had a significant relationship with the scapular internal rotation angle at FC (r＝0.55, p＝0.033) and MER (r＝0.52, p＝0.047).Conclusion: This finding suggest that the evaluation of amount of change in the scapular internal rotation angle during maximal isometric shoulder flexion can be a useful screening method to predict excessive scapular internal rotation at FC and MER of pitching. |
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| AbstractList | Objective: This study aimed to investigate the between scapular position during maximal isometric shoulder flexion and scapular position during baseball pitching.Methods: We recruited fifteen collegiate baseball players and used an optical motion tracking system to assess scapular position. The scapula position during maximal isometric shoulder flexion was defined as the amount of change in the scapular internal rotation, downward rotation, and anterior tilt angle from the time of resting position to the time of maximum muscle exertion. We assessed scapular position at foot contact (FC), maximum shoulder external rotation (MER), and ball release of pitching motion.Results: The amount of change in the scapular internal rotation angle during maximal isometric shoulder flexion had a significant relationship with the scapular internal rotation angle at FC (r＝0.55, p＝0.033) and MER (r＝0.52, p＝0.047).Conclusion: This finding suggest that the evaluation of amount of change in the scapular internal rotation angle during maximal isometric shoulder flexion can be a useful screening method to predict excessive scapular internal rotation at FC and MER of pitching.
【目的】本研究では，最大等尺性肩屈曲運動（以下，MVIC肩屈曲）と投球動作における肩甲骨位置の関連性を明らかにすることを目的とした。【方法】大学野球選手15名を対象に，3次元動作解析装置を用いて肩甲骨位置を定量評価した。肩関節90°屈曲位でMVIC肩屈曲時の肩甲骨位置の変化量と投球動作時の足部接地（以下，FC）・肩関節最大外旋位（以下，MER）・ボールリリースにおける肩甲骨位置を計測した。MVIC肩屈曲の肩甲骨位置の変化量と投球動作時の肩甲骨位置との関連性を検討するために，ピアソンの相関係数を算出した。【結果】MVIC肩屈曲の肩甲骨内旋角度の変化量は，FC（r＝0.55, p＝0.033）とMER（r＝0.52, p＝0.047）の肩甲骨内旋角度と有意な正の相関関係を認めた。【結論】MVIC肩屈曲の肩甲骨内旋の変化量は，投球動作時の肩甲骨内旋角度を推測する評価指標として有用となる可能性がある。 Objective: This study aimed to investigate the between scapular position during maximal isometric shoulder flexion and scapular position during baseball pitching.Methods: We recruited fifteen collegiate baseball players and used an optical motion tracking system to assess scapular position. The scapula position during maximal isometric shoulder flexion was defined as the amount of change in the scapular internal rotation, downward rotation, and anterior tilt angle from the time of resting position to the time of maximum muscle exertion. We assessed scapular position at foot contact (FC), maximum shoulder external rotation (MER), and ball release of pitching motion.Results: The amount of change in the scapular internal rotation angle during maximal isometric shoulder flexion had a significant relationship with the scapular internal rotation angle at FC (r＝0.55, p＝0.033) and MER (r＝0.52, p＝0.047).Conclusion: This finding suggest that the evaluation of amount of change in the scapular internal rotation angle during maximal isometric shoulder flexion can be a useful screening method to predict excessive scapular internal rotation at FC and MER of pitching. |
| Author | Kodesho, Taiki Katayose, Masaki Yamamoto, Keizo Asano, Shu Yoshida, Masahiro Saizaki, Kazuya Iida, Naoya Nomura, Yuki Yoshida, Makoto Toda, Hajime Yamashita, Hirokatsu Watanabe, Shun |
| Author_FL | 渡部 峻 吉田 昌弘 戸田 創 小出所 大樹 山下 泰功 才崎 和哉 Iida Naoya 野村 勇輝 浅野 柊 山本 敬三 吉田 真 片寄 正樹 |
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| References | 16) Kadaba MP, Ramakrishnan HK, Wootten ME: Measurement of lower extremity kinematics during level walking. J Orthop Res. May 1990; 8(3): 383‒392. 19) Picco BR, Fischer SL, Dickerson CR: Quantifying scapula orientation and its influence on maximal hand force capability and shoulder muscle activity. Clin Biomech (Bristol, Avon). 2010; 25(1): 29‒36. 8) 小山太郎，宮下浩二，松下廉：投球動作における肩最大外旋時の肩甲上腕関節水平伸展角度に影響を与える因子．日本臨床スポーツ医学会誌．2016；24（1）：10‒16. 2) Walch G, Boileau P, Noel E, et al.: Impingement of the deep surface of the supraspinatus tendon on the posterosuperior glenoid rim: an arthroscopic study. J Shoulder Elbow Surg. 1992; 1(5): 238‒245. 9) Ueda A, Matsumura A, Shinkuma T, et al.: Scapular dyskinesis type is associated with glenohumeral joint and scapular kinematic alteration during pitching motion in baseball players. J Bodyw Mov Ther. 2021; 28: 332‒340. 12) Wu G, van der Helm FC, Veeger HE, et al.: ISB recommendation on definitions of joint coordinate systems of various joints for the reporting of human joint motion--Part II: shoulder, elbow, wrist and hand. J Biomech. 2005; 38(5): 981‒992. 14) Michaud B, Jackson M, Arndt A, et al.: Determining in vivo sternoclavicular, acromioclavicular and glenohumeral joint centre locations from skin markers, CT-scans and intracortical pins: A comparison study. Med Eng Phys. 2016; 38(3): 290‒296. 7) 小山太郎，松下廉，宮下浩二：投球時肩最大外旋位における肩甲上腕関節水平伸展角度に影響を与える因子～足部接地時の各関節角度との相関～．東海スポーツ傷害研究会会誌．2015；33：22‒26. 15) van Andel C, van Hutten K, Eversdijk M, et al.: Recording scapular motion using an acromion marker cluster. Gait & posture. 2009; 29(1): 123‒128. 5) Mihata T, McGarry MH, Kinoshita M, et al.: Excessive glenohumeral horizontal abduction as occurs during the late cocking phase of the throwing motion can be critical for internal impingement. Am J Sports Med. 2010; 38(2): 369‒374. 1) Fleisig GS, Andrews JR, Dillman CJ, et al.: Kinetics of baseball pitching with implications about injury mechanisms. Am J Sports Med. 1995; 23(2): 233‒239. 6) Mihata T, Jun BJ, Bui CN, et al.: Effect of scapular orientation on shoulder internal impingement in a cadaveric model of the cocking phase of throwing. J Bone Joint Surg Am. 2012; 94(17): 1576‒1583. 10) Nomura Y, Toda H, Katayose M, et al.: Relationship between scapular control during isometric shoulder flexion and scapular motion during baseball pitching: a cross-sectional study. BMC Sports Sci Med Rehabil. 2022; 14(1): 1‒11. 18) Tate AR, Mcclure P, Kareha S, et al.: Effect of the scapula reposition test on shoulder impingement symptoms and elevation strength in overhead athletes. J Orthop Sports Phys Ther. 2008; 38(1): 4‒11. 17) Kibler WB, Sciascia A, Dome D: Evaluation of apparent and absolute supraspinatus strength in patients with shoulder injury using the scapular retraction test. Am J Sports Med. 2006; 34(10): 1643‒1647. 20) Miyasaka J, Arai R, Ito T, et al.: Isometric muscle activation of the serratus anterior and trapezius muscles varies by arm position: a pilot study with healthy volunteers with implications for rehabilitation. J Shoulder Elbow Surg. 2017; 26: 1166‒1174. 13) Rab G, Petuskey K, Bagley A: A method for determination of upper extremity kinematics. Gait & posture. 2002; 15(2): 113‒ 119. 11) Seitz AL, McClelland RI, Jones WJ, et al.: A Comparison of Change in 3d Scapular Kinematics with Maximal Contractions and Force Production with Scapular Muscle Tests between Asymptomatic Overhead Athletes with and without Scapular Dyskinesis. Int J Sports Phys Ther. 2015; 10(3): 309‒318. 3) Davidson PA, Elattrache NS, Jobe CM, et al.: Rotator cuff and posterior-superior glenoid labrum injury associated with increased glenohumeral motion: a new site of impingement. J Shoulder Elbow Surg. 1995; 4(5): 384‒390. 4) Burkhart SS, Morgan CD, Kibler WB: The disabled throwing shoulder: spectrum of pathology Part III: The SICK scapula, scapular dyskinesis, the kinetic chain, and rehabilitation. Arthroscopy. 2003; 19(6): 641‒661. |
| References_xml | – reference: 8) 小山太郎，宮下浩二，松下廉：投球動作における肩最大外旋時の肩甲上腕関節水平伸展角度に影響を与える因子．日本臨床スポーツ医学会誌．2016；24（1）：10‒16. – reference: 9) Ueda A, Matsumura A, Shinkuma T, et al.: Scapular dyskinesis type is associated with glenohumeral joint and scapular kinematic alteration during pitching motion in baseball players. J Bodyw Mov Ther. 2021; 28: 332‒340. – reference: 12) Wu G, van der Helm FC, Veeger HE, et al.: ISB recommendation on definitions of joint coordinate systems of various joints for the reporting of human joint motion--Part II: shoulder, elbow, wrist and hand. J Biomech. 2005; 38(5): 981‒992. – reference: 13) Rab G, Petuskey K, Bagley A: A method for determination of upper extremity kinematics. Gait & posture. 2002; 15(2): 113‒ 119. – reference: 19) Picco BR, Fischer SL, Dickerson CR: Quantifying scapula orientation and its influence on maximal hand force capability and shoulder muscle activity. Clin Biomech (Bristol, Avon). 2010; 25(1): 29‒36. – reference: 20) Miyasaka J, Arai R, Ito T, et al.: Isometric muscle activation of the serratus anterior and trapezius muscles varies by arm position: a pilot study with healthy volunteers with implications for rehabilitation. J Shoulder Elbow Surg. 2017; 26: 1166‒1174. – reference: 4) Burkhart SS, Morgan CD, Kibler WB: The disabled throwing shoulder: spectrum of pathology Part III: The SICK scapula, scapular dyskinesis, the kinetic chain, and rehabilitation. Arthroscopy. 2003; 19(6): 641‒661. – reference: 15) van Andel C, van Hutten K, Eversdijk M, et al.: Recording scapular motion using an acromion marker cluster. Gait & posture. 2009; 29(1): 123‒128. – reference: 2) Walch G, Boileau P, Noel E, et al.: Impingement of the deep surface of the supraspinatus tendon on the posterosuperior glenoid rim: an arthroscopic study. J Shoulder Elbow Surg. 1992; 1(5): 238‒245. – reference: 1) Fleisig GS, Andrews JR, Dillman CJ, et al.: Kinetics of baseball pitching with implications about injury mechanisms. Am J Sports Med. 1995; 23(2): 233‒239. – reference: 7) 小山太郎，松下廉，宮下浩二：投球時肩最大外旋位における肩甲上腕関節水平伸展角度に影響を与える因子～足部接地時の各関節角度との相関～．東海スポーツ傷害研究会会誌．2015；33：22‒26. – reference: 6) Mihata T, Jun BJ, Bui CN, et al.: Effect of scapular orientation on shoulder internal impingement in a cadaveric model of the cocking phase of throwing. J Bone Joint Surg Am. 2012; 94(17): 1576‒1583. – reference: 5) Mihata T, McGarry MH, Kinoshita M, et al.: Excessive glenohumeral horizontal abduction as occurs during the late cocking phase of the throwing motion can be critical for internal impingement. Am J Sports Med. 2010; 38(2): 369‒374. – reference: 10) Nomura Y, Toda H, Katayose M, et al.: Relationship between scapular control during isometric shoulder flexion and scapular motion during baseball pitching: a cross-sectional study. BMC Sports Sci Med Rehabil. 2022; 14(1): 1‒11. – reference: 16) Kadaba MP, Ramakrishnan HK, Wootten ME: Measurement of lower extremity kinematics during level walking. J Orthop Res. May 1990; 8(3): 383‒392. – reference: 18) Tate AR, Mcclure P, Kareha S, et al.: Effect of the scapula reposition test on shoulder impingement symptoms and elevation strength in overhead athletes. J Orthop Sports Phys Ther. 2008; 38(1): 4‒11. – reference: 17) Kibler WB, Sciascia A, Dome D: Evaluation of apparent and absolute supraspinatus strength in patients with shoulder injury using the scapular retraction test. Am J Sports Med. 2006; 34(10): 1643‒1647. – reference: 11) Seitz AL, McClelland RI, Jones WJ, et al.: A Comparison of Change in 3d Scapular Kinematics with Maximal Contractions and Force Production with Scapular Muscle Tests between Asymptomatic Overhead Athletes with and without Scapular Dyskinesis. Int J Sports Phys Ther. 2015; 10(3): 309‒318. – reference: 14) Michaud B, Jackson M, Arndt A, et al.: Determining in vivo sternoclavicular, acromioclavicular and glenohumeral joint centre locations from skin markers, CT-scans and intracortical pins: A comparison study. Med Eng Phys. 2016; 38(3): 290‒296. – reference: 3) Davidson PA, Elattrache NS, Jobe CM, et al.: Rotator cuff and posterior-superior glenoid labrum injury associated with increased glenohumeral motion: a new site of impingement. J Shoulder Elbow Surg. 1995; 4(5): 384‒390. |
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| SubjectTerms | baseball pitching motion scapular motion shoulder joint throwing shoulder injury 投球動作 投球障害肩 肩甲骨運動 肩関節 野球 |
| Title | Relationship Between Scapular Position During Maximum Voluntary Isometric Contraction Of Shoulder Flexion and Scapular Position During Baseball Pitching |
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