Ασκήσεις για σύνδρομο μετα-πολιομυελίτιδας (PPS) — ρυθμός Halstead + ΥΠΟΜΕΓΙΣΤΕΣ διαβαθμισμένες ασκήσεις ΑΣΦΑΛΕΙΣ (Spector 1996 + Willen 2001 + Chan 2003)

Halstead 1985/1991 + March of Dimes 2001 + Gawne 2003 + Jubelt 2004 + Trojan 2005 framework. Post-polio syndrome (PPS) is late-onset progressive weakness + fatigue + pain in polio survivors, typically appearing 15-40 years after acute paralytic poliomyelitis. The Halstead diagnostic criteria require: (1) prior acute paralytic polio with residual motor neuron loss; (2) a period of partial or complete functional recovery; (3) a period of stable function usually ≥15 years; (4) NEW gradual or sudden onset of progressive weakness + persistent fatigue + muscle pain. The mechanism is chronic overuse of surviving expanded motor units after compensatory reinnervation (motor units of polio survivors are 5-7× normal size) → late distal-axon failure (NOT recurrent polio infection — the virus is long gone). The clinical context: many of the 1950s US polio epidemics survivors are now in their 60s-80s, often facing PPS on top of normal aging — a hidden large underserved population. CORE EXERCISE PRINCIPLE per Halstead 1991: PACING + ENERGY CONSERVATION ('save it, don't lose it' — the paradoxical opposite of 'use it or lose it' that applies to general fitness). Agre 1997: AVOID muscle overuse and fatigue to exhaustion. But Spector 1996 + Willen 2001 + Chan 2003 showed: SUBMAXIMAL graded aerobic + light strength training IS safe + IMPROVES function + reduces fatigue + does NOT accelerate progression. The key is staying SUB-fatigue threshold (stop before exhaustion) + long rest intervals between sessions + accepting day-by-day variability (some days are 'good days,' some require rest). Adaptive equipment + AFO + bracing + weight management + caloric awareness are non-negotiable.

Volya's catalogue carries the foundation moves: supported-glute-bridge for posterior chain low-intensity, wall-push-up for upper-body push at low load (proximal weakness common from compensatory polio-era overuse), scapular-retraction for upper-back posture + chronic crutch/cane-use compensation, cat-cow for spinal mobility + post-polio scoliosis support, supine-knee-to-chest for low-back release + hip flexor stretch, diaphragmatic-breathing for respiratory training (some polio survivors had bulbar/thoracic involvement → late respiratory compromise possible), seated-march for cardio without joint impact + pacing-friendly, ankle-pump for circulation + distal-muscle ROM + AFO comfort, sit-to-stand for functional + bone-loading within pacing limits. The AI coach also knows the nutrition side — WEIGHT MANAGEMENT is THE most impactful nutrition lever in PPS (every extra kg = extra burden on compromised motor units → faster deterioration + harder ADLs + falls), protein 1.2-1.5 g/kg + leucine 2.5-3 g per meal supports lean mass + gains from submaximal exercise, anti-inflammatory Mediterranean, vitamin B12 check (deficiency mimics PPS + elderly population), vit D + Ca + DEXA (reduced mobility + falls + AFO/bracing impacts bone), cardiac-protective Mediterranean (PPS population often has CV comorbidities), respiratory consideration if symptomatic, dysphagia if bulbar polio history (SLP + soft moist textures), sleep + magnesium for cramps, consider CoQ10 + creatine modest mechanistic support, AVOID ultra-processed + SSBs + excess caffeine + alcohol excess + CRASH DIETS (lean mass loss disproportionately harmful in PPS). CRITICAL: Post-Polio Health International (PHI) + Polio Survivors Association + Polio Health Foundation + Rotary International + MDA + neurology (post-polio-experienced) + physiatry (rehab specialist KEY for pacing + adaptive equipment + AFO/bracing) + pulmonology if respiratory + SLP if dysphagia + dietitian + PT/OT + falls-prevention + age-appropriate primary care. This is NEVER a replacement for PPS-experienced multidisciplinary care.