Thursday-Abstracts

Thursday, May 30, 2013
S208 Vol. 45 No. 5 Supplement
1121 Board #66 May 30, 8:00 AM - 9:30 AM
Prevalence Of respiratory symptoms among Judo athletes
Compared With swimmers
Tomoko Imai, Shumpei Miyakawa, Koichi Watanabe. University
of Tsukuba, Tsukuba, Japan.
(No relationships reported)
Prevalence of exercised-induced bronchospasm (EIB) among Olympic athletes has
been reported to be as much as five times greater than that of the general population.
Judo is one of the Olympic events and played all over the ages, involving throw and
ground techniques on the mat. Therefore, Judo athletes may inhale or contact with
more allergens rising from the mat, whereas the prevalence of respiratory symptoms
among judo athletes has not been examined.
PurPOsE: The purpose of this study is to examine the prevalence of respiratory
symptoms among judo athletes and to compare with those of swimmers.
METhOds: 46 collegiate judo athletes participated in this study.The history of
respiratory symptoms, pulmonary functions including forced expiratory volume in
1 second as percent of FVC (FEV %(G)) by spirometer and fraction of exhaled
1.0
nitric oxide (FeNO) by a portable NINOX MINO were obtained. Additionally, the
respiratory resistance at 5Hz (R5), frequency of resonance (Fres), and low-frequency
reactance area (ALX) were measured by using forced oscillation technique. These
data were compared with the data obtained from the 22 collegiate swimmers.
rEsuLTs: Average age of judo athletes was 19.9±1.4yr and that of the swimmers
was 20.5±1.2yr. Weight and BMI of judo athletes were significantly higher than those
of swimmers. As to the history, 32.6% of judo athletes experienced asthma and 58.7%
had allergies, while 22.7% swimmers had asthma and 54.5% with allergy. 32.6% of
judo athletes and 31.8% of swimmers revealed FeNO values over 25ppb which was the
normal limit. 19.6% of the judo athletes and 27.3% of the swimmers were below 80%
of FEV %(G). Respiratory resistance such as Fres and ALX were significantly higher
1.0
in judo athletes than swimmers, which was significantly correlated with their weight
and BMI.
CONCLusIONs: The judo athletes also had relatively high prevalence of respiratory
symptoms like swimmers.
1122 Board #67 May 30, 8:00 AM - 9:30 AM
relationship Between the Control of Blood Flow and the
Female athlete Triad
Julee A. Campbell, Anne L. Friedlander, Robert R. Roe, John E.
Davis. Alma College, Alma, MI.
(No relationships reported)
The female athlete triad has been well documented to produce clinical conditions
including disordered eating, functional hypothalamic amenorrhea, and osteoporosis.
Furthermore, it has been previously reported that estrogen augments cardiac output and
arterial flow velocity and decreases vascular resistance in animal testing. However, to
our knowledge no studies have shown a relationship between triad components and the
control of blood flow.
PurPOsE: To determine the prevalence of the female athlete triad components in
collegiate athletes and relate it to the control of blood flow.
METhOds: Twenty-seven athletes (four swimmers, two divers, three bowlers, five
basketball players, eleven runners, and two track and field athletes) and thirty-four
non-athletes participated in this study after giving informed consent. The Eating
Disorder Examination Questionnaire (EDE-Q) was administered to all participants
to determine prevalence of the triad components. A Global Eating Disturbance Score
(GEDS) was then calculated. Venous occlusion plethysmography was used to measure
forearm blood flow. Reactive hyperemia was assessed by occluding the forearm to
250 mmHg for 5 minutes and measuring forearm blood flow post-occlusion. The
hyperemic response was then determined by calculating the area under the curve for
the subsequent measurements of forearm blood flow.
rEsuLTs: Athletes had a greater reactive hyperemic response than non-athletes (77.5
± 6.1 mL/min.sec vs. 60.4 ± 3.0 mL/min.sec). In those with eating disturbances, the
reactive hyperemic response was lower than those with normal eating behavior (48.7
± 5.7 mL/min.sec vs. 77.0 ± 2.0 mL/min.sec (p < 0.05)). There was a significantly
greater GEDS in those subjects reporting stress fractures (p< 0.05).
CONCLusION: These data suggest that athletes with eating disturbances have a
reduced reactive hyperemic response. This could be due to a reduction in estrogen
that has been previously reported in female athletes with triad symptoms. There was a
relationship between stress fractures and eating disturbances. This supports previous
claims that eating disturbances can lead to low bone mineral density.
MEDICINE & SCIENCE IN SPORTS & EXERCISE ®
1123 Board #68 May 30, 8:00 AM - 9:30 AM
arterial Baroreflex Control Of Muscle sympathetic Nerve
activity Following Mixed Meal Ingestion: Influence Of
Endurance Training
Seth W. Holwerda, Daniel P. Credeur, Paul J. Fadel. University
of Missouri, Columbia, MO.
(No relationships reported)
Recent studies have reported that physiological elevations in plasma insulin, such as
following meal ingestion, increase sympathetic baroreflex sensitivity. Insulin resistance
has been linked to decreases in baroreflex sensitivity, which has been attributed
to a blunted transport of insulin into the brain. What remains unclear is whether
improvements in insulin sensitivity, such as that which occurs with endurance training,
enhance the acute effects of insulin to increase arterial baroreflex sensitivity.
PurPOsE: To determine whether improvements in insulin sensitivity following
chronic endurance training enhances the acute effect of insulin to increase sympathetic
baroreflex sensitivity.
METhOds: Muscle sympathetic nerve activity (MSNA; microneurography), arterial
blood pressure (finger photoplethysmography), plasma insulin and glucose levels were
obtained in 5 high fit (HF; VO2 66±2 ml/kg/min) and 6 average fit (AF; VO2 45±1 ml/
kg/min) subjects before, and every 30 min after mixed meal ingestion (57% CHO, 28%
Fat, 15% Protein). Sympathetic baroreflex sensitivity was assessed by determining the
relationship between spontaneously occurring fluctuations in diastolic blood pressure
and MSNA burst incidence.
rEsuLTs: Plasma insulin was significantly elevated following mixed meal intake,
and as expected, responses were greater in AF than HF (e.g., 60 min: 38±6 AF vs
25±2 HF uIU/ml; P0.05). Following mixed meal
intake sympathetic baroreflex sensitivity was similarly increased in both groups at 60
(-4.2±0.5 AF vs -4.7±0.8 HF burst/100heart beats/mmHg; P>0.05) and 120 minutes
(-5.7±0.9 AF vs -4.4±0.7 HF burst/100heart beats/mmHg; P>0.05).
CONCLusION: These preliminary results suggest that increases in sympathetic
baroreflex sensitivity following meal intake are similar between AF and HF subjects.
However, the significantly lower increase in plasma insulin in the HF subjects suggests
enhanced sympathetic baroreflex reactivity to insulin with chronic endurance exercise
training.
1124 Board #69 May 30, 8:00 AM - 9:30 AM
Exercise related syncope In active duty soldiers
Chad Asplund, FACSM. Eisenhower Army Medical Center, Fort
Gordon, GA.
(No relationships reported)
PurPOsE: To better characterize the prevalence of exercise related syncope (ERS) in
an active duty military population as well as examine possible factors associated with
ERS.
METhOds aNd sTudy dEsIGN: Cohort study design. The Armed Forces Health
Longitudinal Technical Application (AHLTA) electronic health record was queried
for all cases of syncope (780.2) seen at Eisenhower Army Medical Center in primary
care clinics from 2005-2010 and charts were reviewed. Those with syncope related
to exercise had charts followed prospectively until completion of specialty evaluation
and diagnosis. Main outcome measure was a medical diagnosis requiring restriction
from duty or from participation in sports. Demographic data analyzed with descriptive
statistics and main outcome measure with multiple logistic regression.
rEsuLTs: 123 total cases of syncope and 58 cases of ERS were reviewed. 40
cases had witnessed collapse, 16 cases were found to have a medical etiology (6
neurological, 3 pulmonary, 3 cardiac, 2 migraine, 2 heat related), 24 had unexplained
etiology. Average age was 25.67 +/- 5.92 (range 18-39) years. After controlling for age,
past medical history, history of collapse, and smoking, those Soldiers with a history of
migraine headaches were 11.3 times more likely to have a medical etiology associated
with their exercise related syncope compared to those without migraine (p