Strength Training With Peripheral Neuropathy, Insulin, and Shoulder Pain
66-year-old man with type 2 diabetes for 12 years, peripheral neuropathy, and right rotator cuff tendinopathy wants to begin machine-based strength training. His HbA1c is 8.9%, and he takes insulin glargine 20 units at bedtime plus metformin. He reports numb toes and occasional burning in both feet; he has no foot ulcers. His right shoulder aches with overhead reaching and at night, but he has full passive range of motion. He wants to improve strength for carrying groceries and to 'get off insulin.' His blood glucose before exercise is 212 mg/dL, and he has not eaten for four hours. He has no history of hypoglycemia and no ketone testing supplies at home. He walks 10 minutes daily, has a 30-minute commute, and can train twice weekly for 6 weeks before a trip.
1. Identify the most important pre-exercise decisions and safety checks for today's session, including what you would do about his glucose of 212 mg/dL and his shoulder.
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Before exercise, check glucose, symptoms, feet, and shoulder. A glucose of 212 mg/dL in type 2 diabetes without ketones and feeling well does not automatically require postponement, but because he has fasted four hours and takes basal insulin, the main risk is later hypoglycemia. Confirm whether he has ketone testing; if glucose is above 250 mg/dL with ketones or symptoms, defer and refer. Inspect feet for ulcers, redness, or deformity and ensure appropriate footwear. Screen the shoulder for red flags: night pain, weakness, or loss of passive range. If passive range is full, use a pain-monitoring approach rather than aggressive overhead work. Document glucose and session response; do not advise insulin changes. Because he has no ketone supplies, give clear criteria for when to stop and seek medical advice.
2. Modify his program for the next 6 weeks and explain how you will track both glycemic and shoulder responses.
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For 6 weeks, train twice weekly with 8-10 exercises, 1-2 sets of 10-15 reps at RPE 5-7, focusing on large muscle groups and functional carries. Avoid overhead pressing and the painful arc; use neutral-grip rows, scapular retraction, chest press limited to the pain-free range, and rotator cuff isometrics if tolerated. For neuropathy, avoid high-impact exercise and prolonged walking on hard surfaces; include balance work near support; check feet daily and after sessions. Track pre-session glucose, post-session glucose, and glucose if the session is prolonged; keep a carbohydrate source available and teach signs of hypoglycemia. For the shoulder, keep pain at or below 3/10 during and the next day; if night pain or weakness worsens, refer. Reassess strength, shoulder pain, and the glucose log weekly, and coordinate with his diabetes team because exercise alone will not replace insulin.