TY - GEN AU - Zuckerman,J AU - Stull,G A AU - Perry,A D TI - Spontaneous activity by adult rats as a function of forced exercise and relative restriction SN - 0021-9940 PY - 1972///0114 KW - Age Factors KW - Animals KW - Behavior, Animal KW - Male KW - Motivation KW - Motor Activity KW - Physical Exertion KW - Rats KW - Rest KW - Swimming N1 - Publication Type: Journal Article UR - https://doi.org/10.1037/h0031876 ER -