This study aimed to examine the effects of open/ closed eyes and age difference on Center of Foot Pressure (COP) sway during stepping. The subjects were 87 healthy males aged 10 - 80 years. COP was measured 20 times w...This study aimed to examine the effects of open/ closed eyes and age difference on Center of Foot Pressure (COP) sway during stepping. The subjects were 87 healthy males aged 10 - 80 years. COP was measured 20 times when subjects stepped on two force plates (left and right) at a rate of 60 steps/min. The evaluation parameters selected were: total trace length, velocity, circumference, rectangular area,left-right width, and front-back width. The former four of these parameters were found to be significantly lower with eyes open than eyes closed in 80-year-old subjects, while the last parameter was significantly lower with eyes open in 10-year-old subjects. In 70- and 80-year-old subjects with eyes open, circumference was greater than that in 10- and 40 - 60-year-old subjects;their rectangular area was greater than that in 50- and 60-year-old subjects;and, their front-back width was greater than that in 10- and 30 - 60-year-old subjects. With eyes closed, circumference, rectangular area, left-right width, and front-back width in 80-year- old subjects, were greater than those in 10 - 70- year-old subjects. The front-back width during stepping with eyes closed was greater in 70- and 80-year-old subjects than in 30 - 50-year-old subjects. The Romberg quotient for all COP sway parameters revealed no significant age-related differences. From our findings, a difference in body sway was observed in 80-year-old subjects (with eyes open/closed) when compared with the other age groups. In addition, the extent of sway varied little among 80 year-old- subjects have greater body sway during stepping, particularly with eyes closed.展开更多
Purpose The kinetic profile of golf swings is frequently assessed in biomechanics.However,most research is limited to young golfers,so the mechanical demands on older athletes are poorly documented.This study provides...Purpose The kinetic profile of golf swings is frequently assessed in biomechanics.However,most research is limited to young golfers,so the mechanical demands on older athletes are poorly documented.This study provides kinetic data of older golfers swinging with a driver and a 6-iron.Methods We examined 17 older,skilled male golfers(62.2±8.8 years,handicap 8.7±4.9)using a 10-camera motion cap-ture system and two force platforms.Three-dimensional net support moments,joint moments of the hip,knee,and ankle,ground reaction forces(GRF),and the inclination angles between the centre of mass(COM)and centre of pressure(COP)were calculated and tested for between-club differences.Results The 3D net support moments of the trail leg were higher when using the driver,while those of the lead leg were higher with the 6-iron.Between-club differences existed in the relative contribution from each joint,the COM-COP inclina-tion angles,and the peak GRF.Conclusion The mechanical demands of golf swings on older adults differ between a driver and a 6-iron,which likely affects the balance and control strategies required.This improved understanding of the kinetic profiles of golf swings in older adults provide clinicians and coaches better means to maintain older golfers active and healthy for longer.展开更多
目的探究养老机构老年人群日常生活活动能力和认知功能的相关性。方法采用目的抽样法,对长沙市4所养老机构的319名60~100岁的老年人进行一般资料、日常生活能力量表(activity of daily living scale,ADL)和简易精神状态量表(mini mental...目的探究养老机构老年人群日常生活活动能力和认知功能的相关性。方法采用目的抽样法,对长沙市4所养老机构的319名60~100岁的老年人进行一般资料、日常生活能力量表(activity of daily living scale,ADL)和简易精神状态量表(mini mental status examination,MMSE)调查。采用相关分析探讨老年人日常生活活动能力与认知功能的相关关系。结果养老机构老年人群ADL得分为(28.66±7.56)分,MMSE得分为(20.66±5.15)分;99.37%(317/319)的老年人存在不同程度的身体活动障碍;90.60%(289/319)的老年人存在不同程度的认知障碍。养老机构老年人的认知功能MMSE得分与ADL得分呈负相关,相关系数为-0.355(P<0.05)。结论养老机构老年人群的日常生活活动能力和认知功能都处于较低水平,并且日常活动能力与认知能力存在正相关关系,为制定有利于养老机构老年人的身体活动和认知训练方案提供依据。展开更多
文摘This study aimed to examine the effects of open/ closed eyes and age difference on Center of Foot Pressure (COP) sway during stepping. The subjects were 87 healthy males aged 10 - 80 years. COP was measured 20 times when subjects stepped on two force plates (left and right) at a rate of 60 steps/min. The evaluation parameters selected were: total trace length, velocity, circumference, rectangular area,left-right width, and front-back width. The former four of these parameters were found to be significantly lower with eyes open than eyes closed in 80-year-old subjects, while the last parameter was significantly lower with eyes open in 10-year-old subjects. In 70- and 80-year-old subjects with eyes open, circumference was greater than that in 10- and 40 - 60-year-old subjects;their rectangular area was greater than that in 50- and 60-year-old subjects;and, their front-back width was greater than that in 10- and 30 - 60-year-old subjects. With eyes closed, circumference, rectangular area, left-right width, and front-back width in 80-year- old subjects, were greater than those in 10 - 70- year-old subjects. The front-back width during stepping with eyes closed was greater in 70- and 80-year-old subjects than in 30 - 50-year-old subjects. The Romberg quotient for all COP sway parameters revealed no significant age-related differences. From our findings, a difference in body sway was observed in 80-year-old subjects (with eyes open/closed) when compared with the other age groups. In addition, the extent of sway varied little among 80 year-old- subjects have greater body sway during stepping, particularly with eyes closed.
基金supported in part by the Bill and Betty Petty Orthopaedic Research Fund.
文摘Purpose The kinetic profile of golf swings is frequently assessed in biomechanics.However,most research is limited to young golfers,so the mechanical demands on older athletes are poorly documented.This study provides kinetic data of older golfers swinging with a driver and a 6-iron.Methods We examined 17 older,skilled male golfers(62.2±8.8 years,handicap 8.7±4.9)using a 10-camera motion cap-ture system and two force platforms.Three-dimensional net support moments,joint moments of the hip,knee,and ankle,ground reaction forces(GRF),and the inclination angles between the centre of mass(COM)and centre of pressure(COP)were calculated and tested for between-club differences.Results The 3D net support moments of the trail leg were higher when using the driver,while those of the lead leg were higher with the 6-iron.Between-club differences existed in the relative contribution from each joint,the COM-COP inclina-tion angles,and the peak GRF.Conclusion The mechanical demands of golf swings on older adults differ between a driver and a 6-iron,which likely affects the balance and control strategies required.This improved understanding of the kinetic profiles of golf swings in older adults provide clinicians and coaches better means to maintain older golfers active and healthy for longer.
文摘目的探究养老机构老年人群日常生活活动能力和认知功能的相关性。方法采用目的抽样法,对长沙市4所养老机构的319名60~100岁的老年人进行一般资料、日常生活能力量表(activity of daily living scale,ADL)和简易精神状态量表(mini mental status examination,MMSE)调查。采用相关分析探讨老年人日常生活活动能力与认知功能的相关关系。结果养老机构老年人群ADL得分为(28.66±7.56)分,MMSE得分为(20.66±5.15)分;99.37%(317/319)的老年人存在不同程度的身体活动障碍;90.60%(289/319)的老年人存在不同程度的认知障碍。养老机构老年人的认知功能MMSE得分与ADL得分呈负相关,相关系数为-0.355(P<0.05)。结论养老机构老年人群的日常生活活动能力和认知功能都处于较低水平,并且日常活动能力与认知能力存在正相关关系,为制定有利于养老机构老年人的身体活动和认知训练方案提供依据。
