Cardiovascular Fitness Levels within Prader-Willi Syndrome Patients

Research Quarterly for Exercise and Sport, March 2000 | Go to article overview

Cardiovascular Fitness Levels within Prader-Willi Syndrome Patients


Timothy L. Hatten and Ben R. Abadie, Mississippi State University

Prader-Willi Syndrome (PWS) is a distinguishable pattern of altered physical development and growth retardation. The characteristics of WPS are obesity, short stature, crytoptor-chidism, and mental retardation. Obesity is life threatening in PWS. Physical activity is one intervention that is very effective in controlling obesity. Only limited research is available concerning exercise capabilities of individuals with PWS. The purpose of this investigation was to describe the functional capacity limits within individuals with PWS. Seven unconditioned individuals with PWS were exercised until volitional exhaustion, utilizing the Modified Balke treadmill protocol to determine the participant's cardiovascular fitness level. The results of this assessment indicated that individuals with PWS reached a peak oxygen consumption level of 25.8 [plus or minus] 7.77 ml*[kg.sup.-1]*[min.sup.-1]. The participant's mean peak heart rate levels was 164 + 5.6 bpm. Participant's mean ventilatory expired volume was 48.6 [plus or m inus] 16.7 ml*[min.sup.-1]. The mean respiratory exchange ratio was 1.02 [plus or minus] .04. The results of this assessment indicated that PWS patient's physiological responses to exercise were significantly lower than the age predicted norm data of the population. …

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