Physical Activity Level and Cerebral Oxygenation During Gait in Old People
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 117
- 试验地点
- 2
- 主要终点
- concentration of cerebral oxyhemoglobin
研究概览
简要总结
Ageing is accompanied by a cognitive decline altering gait and increasing the risk of falling. Physical activity could reduce this cognitive decline by an improvement in the oxygen supply to the brain. At the moment, the effect of physical activity on brain oxygenation during walking in elderly has never been described. Moreover, the increase in cognitive request during a dual task could lead to an increase in the risk of falling. In this context, the investigators of Orleans's hospital want to examine the effect of the physical activity level of elderly on their brain oxygenation during walking and during a dual task.
Moreover, Parkinson' patients could display an impairment of gait and cognitive function. Attentional task and dual task situation are particularly impaired in this pathology. This is why the investigators of Orleans's hospital want to also examine cerebral activation of these patients during walking and during a dual task.
The hemodynamic cerebral activation will be studied using the near infrared spectroscopy at the level of the prefrontal cortex. This non-invasive technic allows the evaluation of the regional oxyhemoglobin and deoxyhemoglobin variations induced by cerebral activation.
详细描述
The main aim of the study is to determine the effect of the physical activity level on variations of the pre-frontal oxygenation during walking and during a dual task in elderly. The other aims are to study the effects of age, gender and the Parkinson' disease on variations of the pre-frontal oxygenation during walking and during a dual task in elderly.
For that, 160 participants (females and males) will be included and 8 groups will be constituted (woman and man non active young people, woman and man non active old people, woman and man active old people, woman and man patients with Parkinson's disease).
Every participants will performed a set of 6 tasks of 2 minutes. Each task will be separated by a 2 minutes resting period. The tasks will be a cognitive task, a control cognitive task, walking at 3 kilometers/hour, walking while doing the cognitive task, walking at the preferred speed, walking at the preferred speed while doing the cognitive task.
During the set, prefrontal oxygenation will be measured using the near infrared spectroscopy.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •men and women non active young people and men and women non active old people : practice less than one hour of physical activity per week
- •men and women active old people: practice at least 3 hours of physical activity per week
- •Non-Inclusion Criteria :
- •For all subjects:
- •Resting electrocardiographic abnormality, Systolic blood pressure >16
- •Heart disease, recent and unusual shortness of breath or needing several pillows to sleep at night, effort/rest chest pain, palpitations with effort, history of discomfort with effort
- •Respiratory failure
- •Disabling rheumatological pathology for walking
- •Neuro-progressive disease or sequelae
- •Perceptual disorders
- •Medication (neuroleptics, psychotropic treatment modifying alertness) potentially having an impact on walking
- •Thickness of the skin fold at the vast lateral area greater than 15 mm
- •Inability of the volunteer to perform the Random Generation of Numbers task for at least 1 min or frequency of enunciation numbers during the Random Generation of Numbers task > 4/s
- •Refusal to sign informed consent
- •For the young sedentary group (woman and man) and the senior group (woman and man, sedentary and active):
- •Subjective health > 3 out of 5
- •For the senior group (woman and man, sedentary and active):
- •Mini-Mental State Evaluation (MMSE) score < 24
- •Geriatric Depression Scale (GDS) score > 10
- •For the Parkinson group (woman and man):
- •Presence of a freezing or clinically embarrassing festination (walking disorder)
- •Score of Hoehn and Yahr ≥III
排除标准
- •Inability of the volunteer to walk on the treadmill at a speed of 3 km/h without assistance (stand at the helm or ask for help)
结局指标
主要结局
concentration of cerebral oxyhemoglobin
时间窗: day 1
The objective is to determine the effect of physical activity level on variations in cerebral oxygenation (combination of concentration of oxyhemoglobin and deoxyhemoglobin) during simple walking and during double task walking in elderly people. Cerebral oxygenation will be determined continuously at rest and during walking. She will be measured non-invasively with a near infrared spectrometry system (Oxymon, Artinis Medical system, Netherlands). This system measures the evolution of the concentration of OxyHb and DeoxyHb by measuring the absorption of light into tissues. The measurement of cerebral oxygenation will evaluate the hemodynamic response at the regional level during the cognitive task, the simple walking task and the dual task.
concentration of cerebral deoxyhemoglobin
时间窗: day 1
The objective is to determine the effect of physical activity level on variations in cerebral oxygenation (combination of concentration of oxyhemoglobin and deoxyhemoglobin) during simple walking and during double task walking in elderly people. Cerebral oxygenation will be determined continuously at rest and during walking. She will be measured non-invasively with a near infrared spectrometry system (Oxymon, Artinis Medical system, Netherlands). This system measures the evolution of the concentration of OxyHb and DeoxyHb by measuring the absorption of light into tissues. The measurement of cerebral oxygenation will evaluate the hemodynamic response at the regional level during the cognitive task, the simple walking task and the dual task.
次要结局
- Scale of perceived difficulties for perception of effort(day 1)
- concentration of muscular oxyhemoglobin(day 1)
- measurement of cognitive performance using random number generation task(day 1)
- Step width: distance between the middle support point of each foot with optogait system(day 1)
- concentration of muscular deoxyhemoglobin(day 1)
- cardiac frequency(day 1)