%0 Journal Article %A Li, Boqing %A Bai, Xiaolong %A Zhu, Yongli %D 2021 %J Molecular \& Cellular Biomechanics %@ 1556-5300 %V 18 %N 2 %P 99--105 %T Study on the Effect of PNF Method on the Flexibility and Strength Quality of Stretching Muscles of Shoulder Joints of Swimmers %M doi:10.32604/mcb.2021.014748 %U http://www.techscience.com/mcb/v18n2/42133