Pulmonary disorders and exercise

Exercise Prescription Using a Group-Normalized Rating of Perceived Exertion in Adolescents and Adults With Spina Bifida

BACKGROUND

People with spina bifida (SB) face personal and environmental barriers to exercise that contribute to physical inactivity, obesity, risk of cardiovascular disease, and poor aerobic fitness. The WHEEL rating of perceived exertion (RPE) Scale was validated in people with SB to monitor exercise intensity. However, the psycho-physiological link between RPE and ventilatory breakpoint (Vpt), the group-normalized perceptual response, has not been determined and would provide a starting point for aerobic exercise in this cohort.

OBJECTIVES

The primary objectives were to determine the group-normalized RPE equivalent to Vpt based on WHEEL and Borg Scale ratings and to develop a regression model to predict Borg Scale (conditional metric) from WHEEL Scale (criterion metric). The secondary objective was to create a table of interchangeable values between WHEEL and Borg Scale RPE for people with SB performing a load incremental stress test.

DESIGN

Cross-sectional observational.

SETTING

University laboratory.

PARTICIPANTS

Twenty-nine participants with SB.

METHODS

Participants completed a load incremented arm ergometer exercise stress test. WHEEL and Borg Scale ratings were recorded the last 15 seconds of each 1-minute test phase.

OUTCOME MEASURES

WHEEL and Borg Scale ratings, metabolic measures (eg, oxygen consumption, carbon dioxide production). Determined Vpt via plots of oxygen consumption and carbon dioxide production against time.

RESULTS

Nineteen of 29 participants achieved Vpt (Group A). The mean ± standard deviation peak oxygen consumption at Vpt for Group A was 61.76 ± 16.26. The WHEEL and Borg Scale RPE at Vpt were 5.74 ± 2.58 (range 0-10) and 13.95 ± 3.50 (range 6-19), respectively. A significant linear regression model was developed (Borg Scale rating = 1.22 × WHEEL Scale rating + 7.14) and used to create a WHEEL-to-Borg Scale RPE conversion table.

CONCLUSION

A significant linear regression model and table of interchangeable values was developed for participants with SB. The group-normalized RPE (WHEEL, 5.74; Borg, 13.95) can be used to prescribe and self-regulate arm ergometer exercise intensity approximating the Vpt.

LEVEL OF EVIDENCE

III.

Cough in the Athlete: CHEST Guideline and Expert Panel Report

BACKGROUND

Cough is a common symptom experienced by athletes, particularly after exercise. We performed a systematic review to assess the following in this population: (1) the main causes of acute and recurrent cough, either exercise-induced or not, (2) how cough is assessed, and (3) how cough is treated in this population. From the systematic review, suggestions for management were developed.

METHODS

This review was performed according to the CHEST methodological guidelines and Grading of Recommendations Assessment, Development and Evaluation framework until April 2015. To be included, studies had to meet the following criteria: participants had to be athletes and adults and adolescents aged ≥ 12 years and had to complain of cough, regardless of its duration or relationship to exercise. The Expert Cough Panel based their suggestions on the data extracted from the review and final grading by consensus according to a Delphi process.

RESULTS

Only 60 reports fulfilled the inclusion criteria, and the results of our analysis revealed only low-quality evidence on the causes of cough and how to assess and treat cough specifically in athletes. Although there was no formal evaluation of causes of cough in the athletic population, the most common causes reported were asthma, exercise-induced bronchoconstriction, respiratory tract infection (RTI), upper airway cough syndrome (UACS) (mostly from rhinitis), and environmental exposures. Cough was also reported to be related to exercise-induced vocal cord dysfunction among a variety of less common causes. Although gastroesophageal reflux disease (GERD) is frequent in athletes, we found no publication on cough and GERD in this population. Assessment of the causes of cough was performed mainly with bronchoprovocation tests and suspected disease-specific investigations. The evidence to guide treatment of cough in the athlete was weak or nonexistent, depending on the cause. As data on cough in athletes were hidden in a set of other data (respiratory symptoms), evidence tables were difficult to produce and were done only for cough treatment in athletes.

CONCLUSIONS

The causes of cough in the athlete appear to differ slightly from those in the general population. It is often associated with environmental exposures related to the sport training environment and occurs predominantly following intense exercise. Clinical history and specific investigations should allow identification of the cause of cough as well as targeting of the treatment. Until management studies have been performed in the athlete, current guidelines that exist for the general population should be applied for the evaluation and treatment of cough in the athlete, taking into account specific training context and anti-doping regulations.

Bronchial hyperresponsiveness in patients with cholinergic urticaria

BACKGROUND

Cholinergic urticaria is occasionally associated with bronchospasm, even in patients without a history of asthma; the underlying mechanism has not been elucidated.

OBJECTIVE

To evaluate bronchial hyperresponsiveness (BHR) in patients with cholinergic urticaria compared with healthy adults and patients with chronic urticaria.

METHODS

Patients with a history of cholinergic urticaria and a positive ergometric test result constitute the study group. History was reviewed and physical examination and spirometry were performed to exclude exercise-induced anaphylaxis and exercise-induced asthma. Patients with chronic urticaria and healthy volunteers were used as positive and negative controls, respectively. All 3 groups were evaluated for BHR using a methacholine challenge test.

RESULTS

Fifty-nine adults participated in the study: 30 patients with cholinergic urticaria, 15 with chronic urticaria, and 14 healthy volunteers. BHR was demonstrated in 13 of 30 patients (43%) in the study group, 1 of 15 patients with chronic urticaria (7%), and 1 of 14 healthy volunteers (7%); the observed difference was statistically significant. Further analysis of the study group demonstrated the existence of 2 subpopulations of patients with cholinergic urticaria, which were discriminated on the basis of intensity and duration of symptoms, with 96.7% accuracy. In addition, a statistically significant correlation was found between patient age and disease duration and between intensity and frequency of symptoms.

CONCLUSIONS

Evaluation of patients with cholinergic urticaria should probably include BHR. A formula based on duration and intensity of cholinergic urticaria symptoms is provided as a tool for the prediction of BHR.

Anaphylactic reactions on the beach: a cause for concern?

BACKGROUND

The commonest causes of anaphylaxis include hymenoptera bites, high-risk food, exercise, and jellyfish bites and may often be encountered on the beach. Therefore, millions of visitors at popular touristic locations are exposed to increased risk of anaphylactic reactions every year. At least 35 cases of acute allergic reactions requiring medical attention took place on the beaches of Crete, Greece during the previous summer.

OBJECTIVE

To evaluate the level of training of lifeguards working on the beaches of the island of Crete, Greece, with regard to emergency management of anaphylaxis as well as to assess the sufficiency of medical equipment that lifeguards possess to treat an anaphylactic reaction.

METHODS

A questionnaire was prepared by the authors and administered to 50 lifeguards working on various beaches of Crete. Queries included the definition of anaphylaxis, proper medical treatment, and the existence or not and composition of an emergency kit with regard to the management of acute allergic reactions.

RESULTS

Our series consisted of 50 lifeguards, 39 (78%) male and 11 female (22%). Although 41 (80%) lifeguards were aware of an acceptable definition of anaphylaxis, no one knew that epinephrine is the first-choice treatment, and 32 (60%) lifeguards replied that steroids should be used for emergency treatment. Additionally, no one possessed an emergency kit that would qualify for management of acute allergic reactions.

CONCLUSIONS

The beach should be considered as a high-risk place for the appearance of anaphylactic reactions. Lifeguards who would be the first trained personnel to encounter this condition should be sufficiently trained and equipped for emergency treatment. Our department is currently introducing a training program to local authorities for the proper training and equipping of lifeguards in the island of Crete.

Practical management: vocal cord dysfunction in athletes

Vocal cord dysfunction (VCD) is characterized by paradoxical adduction of the vocal folds during inhalation, and occasionally upon exhalation, resulting in extrathoracic airflow obstruction. Sports medicine professionals must have a high index of suspicion for VCD when acute respiratory symptoms occur so that prompt evaluation and use of appropriate specialists results in an accurate and timely diagnosis. Many factors have been implicated in the pathophysiology of VCD, including laryngeal irritants, psychogenic and neurogenic causes. The diagnosis and management of VCD involves a variety of specialties including pulmonology, otolaryngology, speech-language pathology, allergy and immunology, and psychologic management as appropriate. The mainstay of treatment remains behavioral management guided by a medical speech-language pathologist, as well as pharmacologic management for VCD triggers.

Differential diagnosis of chest symptoms in the athlete

Chest pain is a common complaint of athletes in all age groups. In athletes, chest pain is often attributed to "chest tightness," and treatment for bronchospasm is considered. However, the causes of the pain are wide and varied, and the pain is referable to the many organ systems that localize to the thorax. Therefore, when treatment with bronchodilators fails, it becomes important to consider other nonasthmatic causes of the pain. These causes can be organized by system and are explained in this article. Cardiac causes are the most feared and, fortunately, are very rare in the adolescent setting. With a thorough knowledge of etiologies of chest pain, the physician can often make a diagnosis with only a history and a physical exam.

Medical screening of the athlete: How does asthma fit in?

There are 4 million high school athletes in the United States, and there are 30 million athletes under age 18 yr competing in organized sports. The prevalence number of emergency room visits and deaths from asthma are significant. Medical clearance is required by all states for participation in high school sports. This article discusses the issues regarding the medical screening of the athlete and how asthma fits into the process. The preparticipation sports physical is an overlooked and underutilized opportunity to improve asthma diagnosis and management in adolescents.

Vocal cord dysfunction in children and adolescents

Vocal cord dysfunction (VCD) is a nonorganic disorder of the larynx that involves unintentional paradoxical adduction of the vocal cords while breathing. The resultant symptoms can include dyspnea, chest tightness, cough, throat tightness, wheezing, or voice change. Most patients with VCD are female, and among adolescents and children, VCD tends to be triggered by exercise and is typically confused with exercise-induced asthma. Both gastroesophageal reflux disease (GERD) and psychiatric illness have been reported as having strong associations with VCD, although, to date, there is no evidence that either causes VCD. VCD often coexists with asthma, and should be suspected in any patient in whom asthma treatment fails. Confirming the diagnosis involves direct visualization of abnormal vocal cord motion, and this usually only occurs during symptoms. Adolescent athletes often require free running exercise challenge to reproduce their symptoms and confirm abnormal vocal cord motion laryngoscopically. The primary treatment for VCD involves a combination of patient education and speech therapy, and, in most cases, patients may resume their activities without significant limitation.