Trunk Skeletal Muscle Changes on CT with Long-Duration Spaceflight.
Trunk Skeletal Muscle Changes on CT with Long-Duration Spaceflight.
复制标题
DOI:
10.1007/s10439-021-02745-8
复制
发表时间:
2021-04
影响因子:
3.8
通讯作者:
Weaver AA
中科院分区:
文献类型:
--
作者:
Greene KA;Withers SS;Lenchik L;Tooze JA;Weaver AA
Astronauts exposed to microgravity for extended time are susceptible to trunk muscle atrophy, which may compromise strength and function on mission and after return. This study investigates changes in trunk skeletal muscle size and composition using computed tomography (CT) and dual energy x-ray absorptiometry (DXA) among 16 crewmembers (1 female, 15 male) on 4–6 month missions. Muscle cross-sectional area and muscle attenuation were measured using abdominal CT scans at pre-flight, post-flight return, one year post-flight, and 2–4 years post-flight. Longitudinal muscle changes were analyzed using mixed models. In six crewmembers, CT and DXA data were used to calculate subject height-normalized skeletal muscle indices. Changes in these indices were analyzed using paired t-tests and compared by imaging modality using Pearson correlations. Trunk muscle area decreased at post-flight return (−4.7±1.1%, p<.001) and recovered to pre-flight values at 1–4 years post-flight. Muscle attenuation changes were not significant. Skeletal muscle index from CT decreased (−5.2±1.0%, p=0.004) while appendicular skeletal muscle index from DXA did not change significantly. In summary, trunk muscle atrophies with long-duration microgravity exposure but recovers to pre-flight values within 1–4 years. The CT measures highlight size decreases not detected with DXA, emphasizing the importance of advanced imaging modalities in assessing muscle health with spaceflight.
登录
查看更多内容
DOI:
10.1111/apha.12224
发表时间:
2014-03
期刊:
Acta physiologica (Oxford, England)
影响因子:
--
作者:
Aubrey J;Esfandiari N;Baracos VE;Buteau FA;Frenette J;Putman CT;Mazurak VC
通讯作者:
Mazurak VC
影响因子:
3
作者:
Burkhart, Katelyn;Allaire, Brett;Bouxsein, Mary L.
通讯作者:
Bouxsein, Mary L.
影响因子:
7.1
作者:
Beavers, Kristen M.;Beavers, Daniel P.;Kritchevsky, Stephen B.
通讯作者:
Kritchevsky, Stephen B.
影响因子:
3
作者:
Cholewicki, J;Panjabi, MM;Khachatryan, A
通讯作者:
Khachatryan, A
DOI:
10.1093/gerona/glx141
发表时间:
2018-01-01
影响因子:
5.1
作者:
Englund, Davis A.;Kirn, Dylan R.;Fielding, Roger A.
通讯作者:
Fielding, Roger A.