Exercise, Brain, and Cardiovascular Health

Aim 1: To determine the neurobiology of exercise and cardiovascular factors: (1A) Body- to
-Brain hypothesis: Exercise -induced changes in peripheral markers of cardiovascular health
(e.g., cardiorespiratory fitness, peripheral vascular function) will precede and partly
explain (statistically mediate) some of the exercise -induced changes in functional and
structural features of areas defining visceral control circuits. (1B) Brain- to -Body
hypothesis: Exercise -induced changes in functional and structural features of areas defining
visceral control circuits precede and partly explain (statistically mediate) consequent
changes in autonomic and neuroendocrine mediators of cardiovascular function that are under
neural regulation, including baro-reflex sensitivity and heart rate variability. Aim 2: To
determine the neurobiology of exercise self--reported correlates of cardiovascular function:
(2A) Exercise will induce changes in visceral control areas engaged by functional magnetic
resonance imaging (fMRI) tasks, and these changes will partly explain exercise- induced
reductions in cardiovascular responsivity to challenges in daily life. (2B) Exercise will
induce changes in visceral control areas engaged by an functional magnetic resonance imaging
(fMRI) emotion processing and regulation paradigm, and these changes will partly explain
exercise- induced improvements in affect measured in daily life by EMA and by conventional
self- report instruments. The public health significance of this research is that it is
designed to more precisely define and refine neurobiological targets to improve
cardiovascular function and health.

Inclusion Criteria:

- Age - individuals aged 28-56 years old

- Gender & Ethnicity - men and women are both eligible to participate. The eBACH study
expects the study population to be approximately 50% women. All ethnic groups are
eligible for the study. The eBACH study expects the study population to be
approximately 30% minorities.

- Ambulation - study participants must be able to walk without pain or use of an
assisted walking device. This will be determined during the initial phone screen.
Ambulation will also be assessed in person as the potential subject must be able to
complete the VO2 Max test on a treadmill.

- Physical Activity Level - all participants must exercise less than 75 minutes per week
and have a VO2max percentile level less than 75 based on the ACSM Guidelines for
Exercise Testing (10th edition).

- Residency - Since the intervention is 12 months in duration, all potential
participants must reside in the Pittsburgh area and plan on residing in the area for
at least one year after randomization. It is recommended that the study coordinator
during the second screen assess potential participants' distance from the exercising
sites since the study requires 2 visits per week. The further a participant is from an
intervention site, the higher the probability they will be unable to adhere to the
protocol. In addition, participants must have reliable transportation to complete the
outcome measures and the intervention requirements. Questions related to these
considerations are asked during the phone screen and should also be assessed during
the baseline visits.

- Willingness to be randomized - To be eligible, all potential study participants must
be willing to be randomized to either of the intervention arms. Individuals that
insist on participating only if they can choose which arm they belong to should not be
enrolled.

Exclusion Criteria:

- Current use of prescribed blood pressure medication - participants who regularly use
blood pressure medication will be excluded from the study.

- Self-reported chronic psychotic illness (schizophrenia, bipolar disorder) or
neurological disorder (Parkinson's disease, dementia, MCI) - the eBACH study will
exclude anyone who self-reports that they experience schizophrenia, bipolar disorder
or parkinson's, dementia, or mild cognitive impairment.

- Regular use of psychotropic medications - participants who regularly use
psychotropic medications is defined as taking more than 7 times in a two week
period will be excluded from the study.

- Current pregnancy or plans to become pregnant over the next year - any woman who is
pregnant via the pregnancy test at the baseline visit will be excluded from the study.
A pregnancy test will also be given at the MRI visit and this will be repeated at
6-months and 12-months.

- Self-reported prior heart attack, stroke, bypass surgery, angioplasty, congestive
heart failure, arrhythmia (cardiac rhythm problems) - any person that reports that
they have any of the health conditions listed above will be excluded from the study.

- Severe hypertension (sbp/dbp greater than/or equal to 160/110)

- >140/90 IS ALLOWED, but feedback card and information about elevated levels will
be provided to the participant.

- Cancer - potential participants who have received treatment in the last 12 months for
cancer, including radiation or chemotherapy will be excluded from the study. Although,
if a potential participant who had non-melanoma skin cancer will be allowed to enroll
in eBACH.

- Liver disease - any person who has had hepatitis B or C, liver failure or Cirrhosis
will be excluded from the study.

- Kidney disease - potential participants who indicated they have chronic kidney
failure, have undergone dialysis, or have had a kidney transplant will not be eligible
to participant in the eBACH study.

- Type 1 diabetes and/or insulin treatment

- Type 2 diabetics if they are taking insulin or 2 or more diabetes medications.
Single injections that contain 2+ drugs count as 2 medications.

- Lung disease requiring drug treatment (any medication usage 3x/week in the last 2
weeks for chronic obstructive pulmonary disease (COPD), emphysema, asthma)

- Rescue inhalers are okay.

- Non fluency in english - speaking/reading English everyday for <10 years

- Nightshift work - the eBACH study for the purposes of the EMA monitoring will exclude
any participants who work more than 12 night shifts in the last year, or participants
who work more than one night shift per month on average. This is defined as a period
of work in which half or more of the hours worked are between midnight and 8:00 in the
morning.

- Mri incompatable

- Claustrophobia - fear of enclosed or confined spaces

- Certain medical devices, implants or other metal objects in or on the body that
cannot be removed and are mr incompatible

- Inability to fit into the mri scanner

- Colorblindness

- History of injury with metal object, metal in eye, welding or working in close
proximity to welding without xray to prove lack of metal in body.

- Suspected alcohol use disorder - for the eBACH study alcohol use disorder is defined
as having five or more drinks at one time three times or more per week.

- Those who are otherwise unable to meet the requirements of the study (persons whose
employment or personal situation will not permit momentary interruptions required for
electronic diary and ambulatory data)