In:
Pediatric Blood & Cancer, Wiley, Vol. 62, No. 11 ( 2015-11), p. 1962-1967
Abstract:
Autonomic nervous system (ANS) activity has been suggested to modulate the clinical severity of sickle cell anemia (SCA) by increasing the risk for vaso‐occlusive events. Regular physical activity (PA) is known to improve ANS activity and health status in several cardiovascular and metabolic diseases. Whether regular PA improves the health status of SCA patients remains unknown. Procedure Twenty‐two patients with SCA and 15 healthy (AA) children/adolescents participated to the study. Heart rate variability was measured in supine position and after a tilt‐test to quantify the ANS activity. PA energy expenditure (PAEE) was assessed with questionnaire. Results 1) PAEE was lower in SCA compared to AA (190 ± 152 vs. 432 ± 277 kcal·d −1 , respectively, P 〈 0.01), 2) overall ANS activity was lower in SCA compared to AA, 3) parasympathetic withdrawal was observed in SCA with aging, 4) ANS reactivity was slightly impaired in SCA compared to AA (reduction in HFnu: −38 ± 27 vs. −58 ± 14%, respectively, P 〈 0.05), 5) ANS indices, PAEE, and rates of clinical events were not correlated. Conclusion Both the level of PA and ANS activity are reduced in SCA compared to AA children/adolescents, particularly in those older than 15 years. Neither PAEE, nor ANS activity seem to influence the clinical severity of children/adolescents with SCA. Pediatr Blood Cancer © 2015 Wiley Periodicals, Inc.
Type of Medium:
Online Resource
ISSN:
1545-5009
,
1545-5017
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2130978-4
Permalink