S74-29038 (September 1974) --- Cosmonaut <a href="https://en.wikipedia.org/wiki/Alexei_Leonov" class="extiw" title="en:Alexei Leonov">Aleksey A. Leonov</a> goes through an isotonic exercise routine in Building 260 during <a href="https://en.wikipedia.org/wiki/Apollo%E2%80%93Soyuz_Test_Project" class="extiw" title="en:Apollo–Soyuz Test Project">Apollo-Soyuz Test Project</a> training at the Johnson Space Center. Leonov is the commander of the Soviet ASTP first (prime) crew. ASTP crewmen are training in both the U.S. and USSR for the joint docking mission in Earth orbit scheduled for the summer of 1975.
NASA
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