Physical activity level and physical functionality in nonagenarians compared to individuals aged 60-74 years
Physical activity level and physical functionality in nonagenarians compared to individuals aged 60-74 years
复制标题
DOI：
10.1093/gerona/62.7.783
复制
发表时间：
2007-07-01
影响因子：
5.1
通讯作者：
Ravussin, Eric
中科院分区：
文献类型：
--
作者：
Frisard, Madlyn I.;Fabre, Jennifer M.;Ravussin, Eric
背景。功能依赖和残疾的风险随着年龄的增长而增加。独立性的丧失被认为部分是由于体力活动的减少。然而，在人群中，准确测量身体活动是具有挑战性的，并且可能无法提供功能损伤的信息。因此，本研究评估了来自路易斯安那州健康老龄化研究的一组老年人（11名男性/11名女性；93 +/- 1岁，66.6 +/- 2.4 kg，体重指数[BMI] = 24 +/- 1 kg/m(2)）和一组60-74岁的参与者（17名男性/15名女性；70 +/- 1岁，83.3 +/- 3.0 kg, BMI = 29 +/- 1 kg/m(2)）的身体功能和身体活动水平。体力活动水平由总能量消耗（TEE）和静息代谢率（RMR）计算。使用缩减连续尺度物理功能性能测试（CS-PFP10）评估物理功能。与60-74岁的参与者相比，90岁老人的绝对TEE （p < 0.001）和调整TEE （p < 007）较低，这归因于RMR和身体活动水平的降低。老年人的功能表现也下降（p < 0.001），这与运动水平相关（r = 0.68, p < 0.001）。与60-74岁的人相比，90多岁老人TEE减少的73%可归因于身体活动水平的降低，其余部分归因于RMR的降低。90岁老人体力活动的减少与身体功能的下降有关。这项研究首次对老年人的身体功能和实际体力活动水平进行了客观比较。
Background. Functional dependence and the risks of disability increase with age. The loss of independence is thought to be partially due to a decrease in physical activity. However, in populations, accurate measurement of physical activity is challenging and may not provide information on functional impairment.Methods. This study therefore assessed physical functionality and physical activity level in a group of nonagenarians (11 men/11 women; 93 +/- 1 years, 66.6 +/- 2.4 kg, body mass index [BMI] = 24 +/- 1 kg/m(2)) and a group of participants aged 60-74 years (17 men/15 women; 70 +/- 1 years, 83.3 +/- 3.0 kg, BMI = 29 +/- 1 kg/m(2)) from the Louisiana Healthy Aging Study. Physical activity level was calculated from total energy expenditure (TEE) and resting metabolic rate (RMR). Physical functionality was assessed using the Reduced Continuous Scale Physical Functional Performance Test (CS-PFP10).Results. Nonagenarians had lower absolute (p < .001) and adjusted (p < .007) TEE compared to participants aged 60-74 years which was attributed to a reduction in both RMR and physical activity level. Nonagenarians also had reduced functional performance (p < .001) which was correlated with activity level (r = 0.68, p < .001).Conclusions. When compared to individuals aged 60-74 years, 73% of the reduction in TEE in nonagenarians can be attributed to a reduction in physical activity level, the remaining being accounted for by a reduction in RMR. The reduced physical activity in nonagenarians is associated with less physical functionality. This study provides the first objective comparison of physical functionality and actual levels of physical activity in older individuals.