In the countryside of east Zhejiang Province,a quiet village has hit a home run.Xujiadai,once a place known for pig farming and environmental pollution,is drawing visitors from across China with a sport still uncommon...In the countryside of east Zhejiang Province,a quiet village has hit a home run.Xujiadai,once a place known for pig farming and environmental pollution,is drawing visitors from across China with a sport still uncommon in the country:baseball.展开更多
The story tells how a Chinese village hit a home run by building its future around baseball,transforming the sport into a powerful engine for rural revitalization.XUJIADAI is an administrative village in Lindai Town o...The story tells how a Chinese village hit a home run by building its future around baseball,transforming the sport into a powerful engine for rural revitalization.XUJIADAI is an administrative village in Lindai Town of Jiaxing City,east China’s Zhejiang Province.It is in this small village that over 100 baseball and softball tournaments have been held,a record that has crowned it China’s top baseball village.展开更多
In Xujiadai,a small village in east China,baseball,a niche sport in the country,has become an engine for rural growth.To date,the village,located in Jiaxing City,Zhejiang Province,has hosted over ioo baseball and soft...In Xujiadai,a small village in east China,baseball,a niche sport in the country,has become an engine for rural growth.To date,the village,located in Jiaxing City,Zhejiang Province,has hosted over ioo baseball and softball tournaments,earning it the title of China's No.I Baseball Village.A decade ago,most villagers in Xujiadai were engaged in pig farming.In recent years,as China advanced nationwide rural environmental improvement efforts,the village also undertook cleanup initiatives.展开更多
Purpose: The purpose of the current study is to investigate the within-pitcher differences in time series angular velocities of the pelvis, trunk, shoulder, and elbow for high and low velocity fastballs in college bas...Purpose: The purpose of the current study is to investigate the within-pitcher differences in time series angular velocities of the pelvis, trunk, shoulder, and elbow for high and low velocity fastballs in college baseball pitchers.Methods: In-game data were retrospectively analyzed from 82 NCAA Division 1 pitchers([1.89 ± 0.06] m, [92.8± 9.5] kg). Kinematic data were collected using an in-game markerless motion capture system. Time series data of pelvis, trunk, shoulder, and elbow angular velocities for each pitcher’s fastest and slowest fastball were extracted for the pitch cycle(foot contact to ball release) and used for analysis. Within-subject time series comparisons were conducted using statistical parametric mapping(SPM) paired samples t-tests(α = 0.012 5).Results: Each of the tested segments were significantly faster in the fastest fastball trial compared to the slowest fastball trial. The duration of significance in reference to the pitch cycle, test statistic, and p-value, for each segment are as follows: Pelvis: 0%–4%, t = 3.54, p = 0.012;Trunk: 30%–67%, t = 5.62, p < 0.001;Shoulder External Rotation: 3%–50%, t =-6.03, p < 0.001;Shoulder Internal Rotation: 96%–100%, t = 4.11, p = 0.008;Elbow: 75%–86%, t = 4.13, p < 0.001.Discussion: Within-subjects differences exist in time series angular velocities when comparing the fastest and slowest fastball. These time series differences provide additional information to distinguish fastball velocity beyond what discrete metrics can provide. Pitchers should look to rotate each segment faster, and optimize the sequencing of these movements, to increase pitch velocity.展开更多
文摘In the countryside of east Zhejiang Province,a quiet village has hit a home run.Xujiadai,once a place known for pig farming and environmental pollution,is drawing visitors from across China with a sport still uncommon in the country:baseball.
文摘The story tells how a Chinese village hit a home run by building its future around baseball,transforming the sport into a powerful engine for rural revitalization.XUJIADAI is an administrative village in Lindai Town of Jiaxing City,east China’s Zhejiang Province.It is in this small village that over 100 baseball and softball tournaments have been held,a record that has crowned it China’s top baseball village.
文摘In Xujiadai,a small village in east China,baseball,a niche sport in the country,has become an engine for rural growth.To date,the village,located in Jiaxing City,Zhejiang Province,has hosted over ioo baseball and softball tournaments,earning it the title of China's No.I Baseball Village.A decade ago,most villagers in Xujiadai were engaged in pig farming.In recent years,as China advanced nationwide rural environmental improvement efforts,the village also undertook cleanup initiatives.
文摘Purpose: The purpose of the current study is to investigate the within-pitcher differences in time series angular velocities of the pelvis, trunk, shoulder, and elbow for high and low velocity fastballs in college baseball pitchers.Methods: In-game data were retrospectively analyzed from 82 NCAA Division 1 pitchers([1.89 ± 0.06] m, [92.8± 9.5] kg). Kinematic data were collected using an in-game markerless motion capture system. Time series data of pelvis, trunk, shoulder, and elbow angular velocities for each pitcher’s fastest and slowest fastball were extracted for the pitch cycle(foot contact to ball release) and used for analysis. Within-subject time series comparisons were conducted using statistical parametric mapping(SPM) paired samples t-tests(α = 0.012 5).Results: Each of the tested segments were significantly faster in the fastest fastball trial compared to the slowest fastball trial. The duration of significance in reference to the pitch cycle, test statistic, and p-value, for each segment are as follows: Pelvis: 0%–4%, t = 3.54, p = 0.012;Trunk: 30%–67%, t = 5.62, p < 0.001;Shoulder External Rotation: 3%–50%, t =-6.03, p < 0.001;Shoulder Internal Rotation: 96%–100%, t = 4.11, p = 0.008;Elbow: 75%–86%, t = 4.13, p < 0.001.Discussion: Within-subjects differences exist in time series angular velocities when comparing the fastest and slowest fastball. These time series differences provide additional information to distinguish fastball velocity beyond what discrete metrics can provide. Pitchers should look to rotate each segment faster, and optimize the sequencing of these movements, to increase pitch velocity.
