Post menopausal women with a history of estrogen positive breast cancer who are receiving aromatase inhibitors for at least one month. 
Patients must complain of mild to moderate arthralgia. 
Ability to understand and sign informed consent. 
Patients meet criteria for low to moderate risk for moderate exercise based oon the ACSM guidelines. 

NCT01236417_inc_T1
Condition
Post menopausal
NCT01236417_inc_T2
Person
women
NCT01236417_inc_T3
Observation
history
NCT01236417_inc_T4
Qualifier
estrogen positive
NCT01236417_inc_T5
Condition
breast cancer
NCT01236417_inc_T6
Drug
aromatase inhibitors
NCT01236417_inc_T7
Temporal
for at least one month
NCT01236417_inc_T8
Condition
arthralgia
NCT01236417_inc_T9
Qualifier
moderate
NCT01236417_inc_T10
Qualifier
mild
NCT01236417_inc_T11
Scope
mild to moderate
NCT01236417_inc_T13
Value
low
NCT01236417_inc_T14
Value
moderate
NCT01236417_inc_T15
Measurement
risk for moderate exercise
NCT01236417_inc_T16
Scope
low to moderate
NCT01236417_inc_T17
Measurement
ACSM guidelines