AIM: To evaluate if static stretching influences peak and end-range functional hamstring-to-quadriceps(H/Q) strength ratios in elite women athletes. METHODS: Eleven healthy female athletes in an elite competitive leve...AIM: To evaluate if static stretching influences peak and end-range functional hamstring-to-quadriceps(H/Q) strength ratios in elite women athletes. METHODS: Eleven healthy female athletes in an elite competitive level participated to the study. All the participants fulfilled the static stretching or non-stretching(control) intervention protocol in a randomized design on different days. Two static unassisted stretching exercises, one in standing and one in sitting position, were used to stretch both the hamstring and quadriceps muscles during these protocols. The total time for the static stretching was 6 ± 1 min. The isokinetic peak torque measurements for the hamstring and quadriceps muscles in eccentric and concentric modes and the calculations for the functional H/Q strength ratios at angular velocities of 60°/s and 180°/s were made before(pre) and after(post) the control or stretching intervention. The strength measurements and functional strength ratio calculations were based during the entire- and end-range of knee extension.RESULTS: The pre-test scores for quadriceps and hamstring peak torque and end range values were not significantly different between the groups(P > 0.05). Subsequently, although the control group did notexhibit significant changes in quadriceps and hamstring muscle strength(P > 0.05), static stretching decreased eccentric and concentric quadriceps muscle strength at both the 60°/s and 180°/s test speeds(P < 0.01). Similarly, static stretching also decreased eccentric and concentric hamstring muscle strength at both the 60°/s and 180°/s test speeds(P < 0.01). On the other hand, when the functional H/Q strength ratios were taken into consideration, the pre-intervention values were not significant different between the groups both during the entire and end range of knee extension(P > 0.05). Furthermore, the functional H/Q strength ratios exhibited no significant alterations during the entire and end ranges of knee extension both in the static stretching or the control intervention(P > 0.05). CONCLUSION: According to our results, static stretching routine does not influence functional H/Q ratio. Athletes can confidently perform static stretching during their warm-up routines.展开更多
This article explores the of certain elite women during late little-known public philanthropic activities Qing China. By examining contemporary newspapers, it traces the new development of women＇s philanthropic engag...This article explores the of certain elite women during late little-known public philanthropic activities Qing China. By examining contemporary newspapers, it traces the new development of women＇s philanthropic engagement and further analyzes two cases, one on disaster relief and the other on women＇s education, to illustrate the issues, controversies and achievements that went along with women＇s philanthropy. It demonstrates how philanthropy, a traditionally-sanctioned field for women＇s activism, legitimatized women to move out of domestic seclusion and reposition themselves in the public sphere in a crucial transitional era when for ＂good women＂ to appear in public was something hotly debated, and how through philanthropic opportunities some were able to engage with political affairs. The broad social impact of their initiatives suggests the continued importance of traditional elite women during China＇s transition to the modern era; it challenges some of our previous notions, which often unthinkingly accepted the verdict of ＂New Women＂ that those who did not embrace their path to modernity were parasitic, unproductive, and backward. By looking carefully at philanthropy, the article reveals fascinating issues and rich details of women＇s public activities that previous historical narratives have often overlooked. It helps to understand how reconfigured traditions became essential components of modernity in the development of modern Chinese gender roles. It also adds a gender perspective to the burgeoning historiography on Chinese philanthropy.展开更多
文摘AIM: To evaluate if static stretching influences peak and end-range functional hamstring-to-quadriceps(H/Q) strength ratios in elite women athletes. METHODS: Eleven healthy female athletes in an elite competitive level participated to the study. All the participants fulfilled the static stretching or non-stretching(control) intervention protocol in a randomized design on different days. Two static unassisted stretching exercises, one in standing and one in sitting position, were used to stretch both the hamstring and quadriceps muscles during these protocols. The total time for the static stretching was 6 ± 1 min. The isokinetic peak torque measurements for the hamstring and quadriceps muscles in eccentric and concentric modes and the calculations for the functional H/Q strength ratios at angular velocities of 60°/s and 180°/s were made before(pre) and after(post) the control or stretching intervention. The strength measurements and functional strength ratio calculations were based during the entire- and end-range of knee extension.RESULTS: The pre-test scores for quadriceps and hamstring peak torque and end range values were not significantly different between the groups(P > 0.05). Subsequently, although the control group did notexhibit significant changes in quadriceps and hamstring muscle strength(P > 0.05), static stretching decreased eccentric and concentric quadriceps muscle strength at both the 60°/s and 180°/s test speeds(P < 0.01). Similarly, static stretching also decreased eccentric and concentric hamstring muscle strength at both the 60°/s and 180°/s test speeds(P < 0.01). On the other hand, when the functional H/Q strength ratios were taken into consideration, the pre-intervention values were not significant different between the groups both during the entire and end range of knee extension(P > 0.05). Furthermore, the functional H/Q strength ratios exhibited no significant alterations during the entire and end ranges of knee extension both in the static stretching or the control intervention(P > 0.05). CONCLUSION: According to our results, static stretching routine does not influence functional H/Q ratio. Athletes can confidently perform static stretching during their warm-up routines.
文摘This article explores the of certain elite women during late little-known public philanthropic activities Qing China. By examining contemporary newspapers, it traces the new development of women＇s philanthropic engagement and further analyzes two cases, one on disaster relief and the other on women＇s education, to illustrate the issues, controversies and achievements that went along with women＇s philanthropy. It demonstrates how philanthropy, a traditionally-sanctioned field for women＇s activism, legitimatized women to move out of domestic seclusion and reposition themselves in the public sphere in a crucial transitional era when for ＂good women＂ to appear in public was something hotly debated, and how through philanthropic opportunities some were able to engage with political affairs. The broad social impact of their initiatives suggests the continued importance of traditional elite women during China＇s transition to the modern era; it challenges some of our previous notions, which often unthinkingly accepted the verdict of ＂New Women＂ that those who did not embrace their path to modernity were parasitic, unproductive, and backward. By looking carefully at philanthropy, the article reveals fascinating issues and rich details of women＇s public activities that previous historical narratives have often overlooked. It helps to understand how reconfigured traditions became essential components of modernity in the development of modern Chinese gender roles. It also adds a gender perspective to the burgeoning historiography on Chinese philanthropy.
