Objective To explore the difference in balance ability and motor control between the elder and the young.Methods From July,2022 to February,2025,30 older adults(older group)and 30 young individuals(young group)were recruited in Huadong Hospital.Both groups underwent sensory organization test using a computerized dynamic posture recording system.Balance scores under six conditions,composite equilibrium score and strategy scores were recorded.The contributions of vision,somatosensation and vestibular function to balance under different stance conditions were analyzed.Results The balance scores were lower in the older group than in the young group under the conditions of eyes open/un-stable surface,eyes closed/unstable surface,and visual conflict/unstable surface(t>3.887,P<0.05),as well as the composite equilibrium score(t=5.603,P<0.05),visual and vestibular scores(t>3.815,P<0.05),and strat-egy scores under all six conditions(t>2.496,P<0.05).Conclusion Posture control ability decreases in older adults,mainly for decreasing visual and vestibular inputs and im-pairing in ankle and hip strategies.

Objective To explore the difference in balance ability and motor control between the elder and the young.Methods From July,2022 to February,2025,30 older adults(older group)and 30 young individuals(young group)were recruited in Huadong Hospital.Both groups underwent sensory organization test using a computerized dynamic posture recording system.Balance scores under six conditions,composite equilibrium score and strategy scores were recorded.The contributions of vision,somatosensation and vestibular function to balance under different stance conditions were analyzed.Results The balance scores were lower in the older group than in the young group under the conditions of eyes open/un-stable surface,eyes closed/unstable surface,and visual conflict/unstable surface(t>3.887,P<0.05),as well as the composite equilibrium score(t=5.603,P<0.05),visual and vestibular scores(t>3.815,P<0.05),and strat-egy scores under all six conditions(t>2.496,P<0.05).Conclusion Posture control ability decreases in older adults,mainly for decreasing visual and vestibular inputs and im-pairing in ankle and hip strategies.

Objective To evaluate the left atrial(LA) function in patients with severe preeclampsia ( SPE) by full-volume imaging technology. Methods Forty-two patients of SPE were randomly chosen as SPE group,34 healthy pregnant women were selected as the control group. LA related function parameters including LA maximum volume( LAVmax),LA minimum volume( LAVmin),LA pre-atrium contraction volume(LAVpre),LA reservoir volume(LARV),LA passive emptying volume(LAPEV),LA contraction volume(LACV),LA expansion index(LAEI),LA passive emptying fraction(LAPEF),LA passive emptying fraction( LAAEF ) were separately required by biplane area-length method and full-volume imaging technology in antepartum and postpartum. Results Compared with control group before delivery,the parameters of SPE group before delivery such as LAVmax,LAVmin,LAVpre were higher,LAEI,LAPEF, LAAEF indexed to body surface area(BSA) were lower(all P ＜0.01).Compared with control group before delivery,the parameters of control group after delivery such as LAVmax,LAVmin,LAVpre were lower( all P ＜0.05),LAEI, LAAEF calculated as ratio to BSA were somewhat reduced,LAPEF calculated as ratio to BSA was relatively higher(all P ＞0.05).Compared with SPE group before delivery,the parameters of SPE group after delivery such as LAVmax,LAVmin,LAVpre were lower,LAEI,LAPEF,LAAEF indexed to BSA were higher( all P ＜0.01). Compared with control group after delivery,the parameters of SPE group after delivery such as LAVmax,LAVmin,LAVpre were still incresed ( all P ＜ 0.05 ), LAEI,LAPEF, LAAEF indexed to BSA were relatively lower( all P ＞0.05). Conclusions Full-volume imaging technology can quantitatively evaluate the LA function. LA reservoir function,conduit function and booster pump function are reduced in SPE before delivery,LA rereservoir function,conduit function and booster pump function are basically recovery in SPE after delivery.