Strength vs Aerobic Training in Children With Cystic Fibrosis

Orenstein, David M.; Hovell, Melbourne F.; Mulvihill, Mary M.; Keating, Kristen K.; Hofstetter, C. Richard; Kelsey, Sheryl F.; Morris, Kimberly; Nixon, Patricia A.

doi:10.1378/chest.126.4.1204

Cited by 96 publications

(56 citation statements)

References 40 publications

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“…Aerobic training alone has been shown to increase strength in children with CF [20]. Although skeletal muscle strength was not tested in the present study, improvements of peak and submaximal exercise capacity could be associated with a greater strength improvements especially in the LFL group [18,20]. Furthermore, better nutritional status may have a positive effect on lung function and exercise capacity [21,22].…”

Section: Discussionmentioning

confidence: 70%

“…The increase in O 2 pulse, despite unchanged fC, suggests an increase in cardiac stroke volume, and therefore true improvement in cardiopulmonary fitness, and not just a better effort on the post-training test [13]. Aerobic training alone has been shown to increase strength in children with CF [20]. Although skeletal muscle strength was not tested in the present study, improvements of peak and submaximal exercise capacity could be associated with a greater strength improvements especially in the LFL group [18,20].…”

Section: Discussionmentioning

confidence: 99%

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Do responses to exercise training in cystic fibrosis depend on initial fitness level?

Gruber

Orenstein²,

Braumann³

2011

Eur Respir J

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The aim of our study was to evaluate the responses to an exercise programme with respect to initial fitness in subjects with cystic fibrosis (CF).72 subjects (42 female) aged 10-43 yrs (forced expiratory volume in 1 s of 62.0¡26.7% predicted) were included. Participants were divided into three groups based on peak oxygen uptake expressed as % predicted. Subjects participated in a multifaceted rehabilitation programme, including five-times-a-week exercise training, for 6 weeks. Exercise and ventilatory capacity were determined by a maximal incremental cycling test. Oxygen uptake, workload and peak cardiac frequency at peak and submaximal workload were used as parameters for exercise capacity and responsiveness to training.Lung function values were significantly different between groups (p,0.05), and increased after training (p,0.05) only in groups with a lower initial fitness level. Responsiveness to training showed differences between groups (p,0.05) at peak and ventilatory anaerobic threshold (VAT; p,0.05), with higher improvements in subjects with lower initial fitness level.The improvements in exercise parameters in CF at peak and VAT depended on the fitness level at baseline, independent of lung function. These improvements seen after training were comparable with those seen in healthy subjects, suggesting that responsiveness to exercise is similar in CF and in healthy untrained persons.

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Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Do responses to exercise training in cystic fibrosis depend on initial fitness level?

Gruber

Orenstein²,

Braumann³

2011

Eur Respir J

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“…They found that both groups had an increase in muscle strength and tolerance to physical exercise. 6 In our study, the intervention time before re-evaluation was 3 months, and this may be the reason why we did not detect differences in the parameters that measure adaptation to aerobic exercise. Another reason for the absence of improvement in exercise capacity and quality of life after the intervention could be the insufficient frequency of exercise and the lack of a guideline for training intensity.…”

Section: Discussionmentioning

confidence: 74%

“…4,5 As one of the approaches to the treatment of these patients, the effect of aerobic exercise on the life of children and adolescents with CF has been investigated in several studies, and results suggest that regular exercise and adherence to a physical exercise program are fundamental. [6][7][8] Some recommendations for the exercise practice have been developed and reviewed along the years to help individuals and health-care professionals to initiate appropriate preventive or therapeutic programs. 9,10 However, few properly designed, randomized studies have been conducted to evaluate whether guidelines prepared by health-care professionals as recommendations of physical exercises, modality, frequency, intensity, and stretching are effective and regularly adopted by patients.…”

Section: Introductionmentioning

confidence: 99%

Effects of an Educational Intervention of Physical Activity for Children and Adolescents With Cystic Fibrosis: A Randomized Controlled Trial

et al. 2014

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BACKGROUND: Regular aerobic exercise in patients with cystic fibrosis (CF) improves aerobic conditioning and delays disease progression, resulting in better quality of life. The purpose of this study was to evaluate the effect of an aerobic exercise program based on verbal and written guidelines on maximum exercise capacity using a cardiopulmonary exercise test, quality of life, and the self-reported aerobic exercise practice of children and adolescents with CF. METHODS: This randomized controlled trial followed guidelines for physical exercise in a CF center. Subjects were assigned to 2 groups: intervention (group 1), with 17 subjects; and control (group 2), also with 17 subjects. Data were collected from October 2010 to October 2011, and the study population comprised 7-20-y-old children and adolescents with CF. The intervention consisted of handing out a manual with guidelines for aerobic physical exercises and reinforcing recommendations in telephone calls every 2 weeks. RESULTS: Thirty-four subjects were included in the study, 20 of whom were boys (58.5%). The groups were similar at baseline. In group 1, 6 subjects (35.2%) reported practicing physical exercises regularly. The mean age was 13.4 ؎ 2.8 y, the mean percent-ofpredicted FEV 1 was 95.5 ؎ 17.9%, and the mean peak oxygen uptake (V O 2 ) relative to body mass was 34.9 ؎ 9.0 mL/kg/min. In group 2, 4 subjects (23.5%) reported practicing physical exercises regularly. The mean age was 12.7 ؎ 3.3 y, the mean percent-of-predicted FEV 1 was 100.1 ؎ 21.2%, and the mean peak V O 2 was 33.2 ؎ 8.2 mL/kg/min. In group 1, there was a significant increase in physical exercise practice as reported by subjects after 3 months of intervention compared with group 2 (P ‫؍‬ .01). No statistically significant differences were found for the other variables. CONCLUSIONS: Verbal and written guidelines for aerobic exercise, together with supervision over the telephone, had a positive impact on the self-reported regular physical exercise practice of children and adolescents. However, no improvement was found in lung function and maximum exercise capacity or domains of the quality of life questionnaire.

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“…Patients were equipped with a heart rate monitor (Accurex plus, Polar Electro, Bü ttelbron, Germany) and provided with a target heart rate for endurance-type activities that was just below the heart rate at the individual gas exchange threshold [17]. Patients were also encouraged to perform strength-enhancing exercises, since strength-building activities and interval training have been shown to be effective for conditioning and improving health in cystic fibrosis patients [18].…”

Section: Interventionmentioning

confidence: 99%

Long-term effects of a partially supervised conditioning programme in cystic fibrosis

Hebestreit¹,

Kieser²,

Junge³

et al. 2009

European Respiratory Journal

126

183

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Little is known about the long-term persistence of positive effects induced by a physical conditioning programme in cystic fibrosis. Therefore, this study determined the effects of a 6-month conditioning programme on peak oxygen uptake (primary outcome) and other markers of fitness, physical activity, anthropometry, lung function and quality of life (secondary outcomes), 18 and 24 months after the programme was initiated.Patients with cystic fibrosis aged 12-40 yrs were randomly assigned to an intervention (n523) and a control (n515) group. The intervention group consented to add 3 h of sports per week for o6 months to their previous activities. Controls were asked to maintain their level of activity for 12 months. Patients were seen at baseline and after 3, 6, 12, 18 and 24 months.There was no significant difference between groups at baseline. The intervention induced positive effects on peak oxygen uptake (difference in changes from baseline to the 18-and 24-month assessments between groups: 3.72¡1. ; p,0.05), forced vital capacity (6.06¡2.87% predicted; p,0.05) and perceived health (9.89¡4.72; p,0.05).A home-based partially supervised physical conditioning programme can improve physical fitness, lung function and perceived health long after the intervention has ended.

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Strength vs Aerobic Training in Children With Cystic Fibrosis

Cited by 96 publications

References 40 publications

Do responses to exercise training in cystic fibrosis depend on initial fitness level?

Do responses to exercise training in cystic fibrosis depend on initial fitness level?

Effects of an Educational Intervention of Physical Activity for Children and Adolescents With Cystic Fibrosis: A Randomized Controlled Trial

Long-term effects of a partially supervised conditioning programme in cystic fibrosis

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