January 31, 2025 - With peak exercise intolerance, your heart cannot pump enough blood to meet your body’s oxygen demands during intense activity. Regular exercise and physical activity can benefit people with hyperthyroidism, and most people can exercise without a risk of serious complications.

Additionally, decreased mobilisation of free fatty acids from adipose tissue and, consequently, lower plasma free fatty acid levels compound the problem of reduced lipid delivery to active skeletal muscle in the hypothyroid state. In contrast, cardiovascular support is enhanced in hyperthyroidism, implicating other factors in exercise tolerance.

This condition is also associated ... substrate, leading to greater glycolytic flux in muscle. Furthermore, hyperthermia, a well-known symptom of hyperthyroidism, may also contribute to exercise intolerance, and the core temperature during exercise is higher in the hyperthyroid ...

November 26, 2021 - “For someone who has significant clinical hyperthyroidism, it’s as if they are already running a treadmill every day, even in their sleep,” says Dr. Nasr. “Excessive exercise can cause a person to go into heart failure if their thyroid hormones are not under control.”

This patient would still be able ... normally not occur in clients attending therapy in outpatient settings. Hyperthyroidism is associated with exercise intolerance and reduced exercise capacity....

In hyperthyroidism, cardiovascular exercise testing and analysis of respiratory gas exchange demonstrate low efficiency of cardiopulmonary function as well as impaired chronotropic, contractile, and vasodilatatory reserves, which are reversible ...

October 21, 2021 - Frustratingly, thyroid problems can make it harder to exercise. Both hypo- and hyperthyroidism are associated with exercise intolerance when untreated, because they cause the body to have an abnormal response to exercise.

December 29, 2015 - Hyperthyroidism causes low work efficiency, which may limit exercise tolerance.

November 17, 2025 - Once your thyroid symptoms are under control and your hormone levels are normal, incorporating exercise into your routine is not only safe, it's encouraged. An overactive thyroid (hyperthyroidism) produces excess thyroid hormones, which ...

October 9, 2012 - Additionally, decreased mobilisation of free fatty acids from adipose tissue and, consequently, lower plasma free fatty acid levels compound the problem of reduced lipid delivery to active skeletal muscle in the hypothyroid state. In contrast, cardiovascular support is enhanced in hyperthyroidism, implicating other factors in exercise intolerance.

November 1, 1996 - Hyperthyroidism causes low work efficiency, which may limit exercise tolerance.

Advice on how to exercise when living with a thyroid disorder

During exercise activities the client should be regularly assessed for signs of heat intolerance, which may include excessive sweating, muscle cramping, nausea, tingling in the extremities, and syncope.

October 15, 2024 - Exercise capacity, respiratory muscle strength and endurance, PAL, dyspnea, and QoL were affected in patients. Patients with hyperthyroidism should be evaluated at the onset of diagnosis, followed up, and referred to cardiopulmonary rehabilitation programs at the earliest.

Strenuous exercise in patients with uncontrolled hyperthyroidism or hypothyroidism is not advisable since these conditions affect the person’s metabolism and heart rate (increase in hyperthyroidism or decrease in hypothyroidism). With proper treatment of the thyroid disorder and monitoring, ...

May 10, 2024 - High-intensity PA may impair thyroid ... overt hypothyroidism, and AIT in men, while studies have shown that exercise has no relationship with hyperthyroidism....

May 14, 2019 - Simply, the answer is yes you can exercise – however, there are some caveats around this (McAllister, 1995). First and foremost, hyperthyroidism is already associated with an increased heart rate at rest, as well as during exercise.

January 11, 2016 - In this study, incremental cardiopulmonary exercise testing in hyperthyroid patients showed a marked decrease in submaximal work and an impaired rise in heart rate from rest to the ventilatory anaerobic threshold. Despite a normal minute ventilation during exercise, a reduced ventilatory anaerobic threshold in H was noted.

April 10, 2020 - According to endocrinologist Christian Nasr, MD, on the Cleveland Clinic's website, excessive exercise can be dangerous for someone with severe hyperthyroidism — it can cause heart failure if their thyroid hormones are not under control.

One framework for understanding the impact of physical activity on other physiological systems is the Constrained Energy Expenditure hypothesis proposed by Pontzer, which posits that increased physical activity leads to reductions in the activity of other (i.e., non-musculoskeletal) systems [15–18]. This suppression could be evident in global (i.e., whole-body) mediators of metabolic activity, such as thyroid hormone. Results from studies examining the effects of chronic exercise on resting levels of thyroid hormones have been mixed.