🔗 Pectoralis major muscle rupture in windsurfing.
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🗃️ https://web.archive.org/web/*/http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=8024433&query_hl=6&itool=pubmed_DocSum
board sailing requires sustained isometric contraction of the pectoralis major, deltoid and scapular stabilizers to maintain appropriate pull of the sail against wind resistance.