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Endurance Exercise Training in Young Adults with Barth Syndrome: A Pilot Study.


ABSTRACT:

Background

Barth syndrome (BTHS) is a rare X-linked disorder that is characterized by mitochondrial abnormalities, cardio-skeletal myopathy, exercise intolerance, and premature mortality. The effect on endurance exercise training on exercise tolerance, cardio-skeletal function, and quality of life in BTHS is unknown.

Methods

Four young adults (23?±?5 years, n?=?4) with BTHS participated in a 12-week, supervised, individualized endurance exercise training program. Exercise training was performed on a cycle ergometer for 30-45' three times per week at a moderate intensity level. Exercise tolerance was measured by graded exercise testing and peak oxygen consumption, heart function via two-dimensional and M-mode echocardiography, skeletal muscle function by near-infrared spectroscopy, and quality of life through the Minnesota Living with Heart Failure questionnaire.

Results

There were no adverse events during exercise testing or training for any participant. Peak oxygen consumption modestly (~5%) improved in three or four participants. Mean quality of life questions regarding dyspnea and side effects from medications significantly improved following exercise training. Mean resting heart function or skeletal muscle oxygen extraction during exercise did not improve after exercise training.

Conclusion

Endurance exercise training is safe and appears to modestly improve peak exercise tolerance and certain measures of quality of life in young adults with BTHS. However, compared to improvements resulting from endurance exercise training seen in other non-BTHS mitochondrial myopathies and heart failure, these improvements appear blunted. Further research into the most beneficial mode, intensity and frequency of exercise training in BTHS is warranted.

SUBMITTER: Cade WT 

PROVIDER: S-EPMC5362555 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Publications

Endurance Exercise Training in Young Adults with Barth Syndrome: A Pilot Study.

Cade W Todd WT   Reeds Dominic N DN   Peterson Linda R LR   Bohnert Kathryn L KL   Tinius Rachel A RA   Benni Paul B PB   Byrne Barry J BJ   Taylor Carolyn L CL  

JIMD reports 20160611


<h4>Background</h4>Barth syndrome (BTHS) is a rare X-linked disorder that is characterized by mitochondrial abnormalities, cardio-skeletal myopathy, exercise intolerance, and premature mortality. The effect on endurance exercise training on exercise tolerance, cardio-skeletal function, and quality of life in BTHS is unknown.<h4>Methods</h4>Four young adults (23 ± 5 years, n = 4) with BTHS participated in a 12-week, supervised, individualized endurance exercise training program. Exercise training  ...[more]

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