15.4 CVD, Hypertension, Diabetes, Obesity, and Arthritis

15.4 CVD, Hypertension, Diabetes, Obesity, and Arthritis

Domain III Task 3 modifications for chronic conditions sit downstream of Chapter 3 screening and Chapter 4 intake. If the ACSM preparticipation algorithm requires medical clearance, you wait for it. After that letter or conversation exists, you implement cleared exercise. You do not diagnose hypertension, diabetes, or coronary disease from a gym reading. You do not start, stop, skip, or titrate any drug.

AHA- and ACSM-aligned teaching still wants most of these clients moving. The exam punishes two opposite errors: refusing every medicated adult, and training them as if the condition were a sticker on the chart.

Hypertension: Rhythm, Not Breath-Holds

ACSM-aligned hypertension recommendations emphasize moderate, prolonged, rhythmic aerobic work with large muscle groups — walking, cycling, swimming — on most days (often taught as about 5–7 days of aerobic work), plus resistance 2–3 days and flexibility work. The American Heart Association’s adult activity message still tracks the Physical Activity Guidelines: accumulate 150 moderate minutes (or equivalent vigorous minutes) plus muscle-strengthening on 2 or more days when the person is cleared for that dose.

The programming detail the exam loves is mechanical:

• Avoid the Valsalva maneuver (inhale and hold while straining). Breath-holding spikes blood pressure, can cause dizziness, and can drop people. Cue exhale on effort.
• Prefer dynamic, large-muscle patterns over long maximal isometrics.
• Build a longer cool-down. Antihypertensives and vasodilation stack; a sudden sit-to-stand after a hard set is an orthostatic setup (Section 15.2).
• If heart rate is blunted by a beta-blocker, RPE and the talk test carry the session (Chapter 4.1).

Monitor blood pressure conceptually: know that systolic pressure rises with work, that post-exercise hypotension is common, and that a client who arrives with a severe headache, chest symptoms, or a reading their clinician already labeled as “do not exercise today” is a stop. You are not the person who invents a new ACE-only cuff cutoff and then changes the lisinopril. Resting values that look newly extreme, or symptoms with any reading, go back to the clinician.

Diabetes: Timing, Feet, 15 Grams, Ketones

Exercise increases muscle glucose uptake. That is useful — and it is why insulin and insulin-secreting oral agents (sulfonylureas) create hypoglycemia risk during the session and hours later. Metformin alone is lower risk; it does not make timing irrelevant if insulin or a secretagogue is also on board.

Program the clock:

• Ask what was injected or swallowed, when, and when they last ate.
• Prefer a consistent session time once you know their pattern.
• Keep a rapid carbohydrate source in the room.

ADA-aligned teaching treats about 15 grams of fast carbohydrate as the first field treatment for suspected hypoglycemia (the familiar 15–15 idea: take ~15 g, wait about 15 minutes, recheck if they use a meter, repeat if still low). Examples clients already use include glucose tablets or 4 ounces of juice. You do not adjust the insulin dose. You do not invent an ACE-only glucose cutoff. Industry teaching aligned with ADA and ACSM still treats values under about 70 mg/dL as a low to treat, often adds carbohydrate before exercise when people on insulin or secretagogues are under about 100 mg/dL, and holds exercise when marked hyperglycemia is paired with ketones.

Ketones = stop and refer. Moderate or large urine or blood ketones (more often a type 1 picture, but you do not diagnose type at the door) mean you do not “work the sugar down.” That can worsen ketoacidosis. Send them to their diabetes care team or urgent care depending on how sick they look.

Feet are a programming surface. Neuropathy blunts pain; poor perfusion slows healing. Check that shoes fit, that the client or caregiver inspects feet, and that you skip high-impact or barefoot work on an open ulcer. An ulcer is a referral, not a “toughen the skin” plan.

Obesity: Joints, Fit, and Dignity

Obesity is not a character flaw and it is not a single program. Many clients also carry hypertension, diabetes, or arthritis — use those rules too. ACSM-aligned weight-management activity still builds toward regular aerobic volume they can repeat, plus resistance so the weight they lose is not only muscle.

Modifications that actually change the hour:

• Joint-friendly modes: recumbent or upright cycling, water walking, walking with poles, machines that do not require a floor stand-up from a deep hole.
• Equipment that fits: a bench they can sit on, a seat that does not pinch, a cuff that can actually read blood pressure, a step height they can own. Inclusive hardware is a safety skill, not a courtesy.
• Stigma-free coaching: cue the pattern, not the belly. No “before” photos they did not ask for. No “we will get that off you” as a greeting. Chapter 12 already treated belonging as an adherence variable; here it is also how you keep a larger body in the plan long enough for joints and glucose to change.
• Progress duration and consistency before you add impact.

You do not prescribe a very-low-calorie diet, a fat-burner, or a public weigh-in contest.

Arthritis: Move the Range That Hurts Least

Osteoarthritis and rheumatoid arthritis are not the same disease, and you do not diagnose which one it is. Both do better with movement than with bed rest when the joint is not in a medical flare that the clinician has restricted.

Program:

• Stay in the least painful range of motion that still trains the pattern. A partial squat they can reverse beats a deep squat they guard.
• Respect morning stiffness: book later, lengthen the warm-up, use heat they already tolerate (warm water, a longer bike). Do not test end-range on a cold joint at 6 a.m. to “get more mobility.”
• A flare is a regression: cut load, cut impact, switch to water or range-of-motion, and ask whether the clinician wants a hold. It is not a “push through the pain to break up the rust” day.
• Avoid long, heavy grinding on a hot, swollen joint. Control eccentric work; do not bounce into a guarded end-range.

Sharp, new, or night pain that does not match the session, or a hot joint with fever, is refer, not foam-roll.

Cardiovascular Disease: Stay Inside the Cleared Box

After a cardiac event, stent, bypass, heart-failure diagnosis, or known disease, the clinician and, when it exists, cardiac rehabilitation own the intensity ceiling. You stay at or below the cleared intensity. If they completed a supervised program, use the numbers or RPE they were given. If they did not, you do not invent a Performance-phase interval block because they “feel fine today.”

Stop signs (AHA/ACSM emergency teaching you already use): chest pain or pressure, unusual dyspnea, dizziness or near-syncope, palpitations they cannot ignore, nausea with poor color, or pain that radiates to jaw, neck, or arm. Sit them, follow the emergency action plan, and do not talk them through angina.

Large-muscle rhythmic work and a long cool-down still apply. Valsalva is still banned. Isometric grinding at a high percentage is a poor first choice.

Worked Pictures

Marcus, cleared hypertension, no beta-blocker. You write most-days walking he can talk through, two full-body resistance days with a visible exhale on the lift, and a 6-minute easy cool-down before he stands in the parking lot. You do not add heavy isometric wall-sits “to spike the metabolism,” and you do not change his ACE inhibitor.

Lila, type 1, meter in her bag, says she has moderate ketones this morning and still wants to “burn the sugar off.” You stop. Ketones are a refer, not a treadmill. Yesterday, when she was 85 mg/dL on insulin with no ketones, you would have used the ADA 15 g carbohydrate idea before hard work and watched her feet, not her willpower.

Scope Line

Clearance decides whether. ACOG, ACSM, ADA, and AHA decide how the industry thinks about dose. You decide the session they can repeat. Drugs and diagnoses stay with the clinician.