'impede ability' is correct and usable in written English.
It is typically used as a verb to express the idea of something that hinders or blocks someone's ability to do something. For example, "Oppressive workplace policies impede the ability of employees to excel in their jobs."
"Change-in-support" (CIS) balance-recovery reactions that involve rapid stepping or reaching movements play a critical role in preventing falls; however, age-related deficits in the neuro-musculoskeletal systems may impede ability to execute these reactions effectively.
Moreover, the high costs associated with use of this technology can impede ability to conduct well powered studies.
Further, age-related deficits in the neuro-musculoskeletal systems may impede ability to effectively execute "change-in-support" (CIS) balance-recovery reactions that involve rapid stepping or reaching movements that play a critical role in preventing falls [ 31].
The impeded ability to eat hard chow effectively among the null mice resulted in lower bodyweight gain.
Increased SOD expressions coupled with decreased activity of APX not only engineered over accumulation of H2O2 but also impeded ability of cells to scavenge it.
The Bush administration contends that a broad reading will impede its ability to go after terrorism suspects outside the country.
But he said the setup and his lack of business experience should not impede his ability to oversee Mr. Eisner.
We should no more unnecessarily tamper with our citizens' data than we should impede their ability to vote.
Big banks invariably argue that new rules will impede their ability to thrive and, in the process, harm the economy.
"The administration continues to express its opposition to Congressional restrictions that impede our ability to implement transfers".
