Scholarship & Research
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Item Physical activity and its relationship to diet and attitudes toward body image(Montana State University - Bozeman, College of Education, Health & Human Development, 2002) Blakely, Frank EdwardItem Validation of the 1-mile walking test in young adults at maximal and submaximal walking intensities(Montana State University - Bozeman, College of Education, Health & Human Development, 2002) Keller, Christopher PaulItem Reliably measuring habitual free-living physical activity with the Actical® activity monitor(Montana State University - Bozeman, College of Education, Health & Human Development, 2007) Webster, Michael Dean; Chairperson, Graduate Committee: Daniel P. HeilThe purpose of this study was to compare reliability measures between a hip- and wrist-worn Actical® accelerometer. A group of 40 (25 female, 15 male) Montana State University employees wore both monitors for 14 consecutive days. Intraclass correlation coefficients (ICC) were determined for three variables for each monitor wearing location for bouts of one, three, five, eight and ten consecutive minutes over the entire monitoring period and for each single day of monitoring. The three dependent variables were the raw activity count values (CNTMV, counts/day) at or above specified moderate intensity activity thresholds, and the corresponding summation of total time (TMV, mins/day) and activity energy expenditure (AEEMV, kcals/day) spent at or above a moderate intensity. As time bouts increased from one to ten minutes, ICC values decreased for both the hipand wrist-worn monitors. The number of days for the hip-worn monitor to reach an ICC of 0.80 ranged from 3 to 4, 2 to 5, and 3 to 6 for CNTMV, AEEMV, and TMV, respectively, while the wrist-worn monitor took 10 to 12, 5 to 8, and 3 to 5 days for the same respective variables.Item Neuromuscular performance and the menstrual cycle(Montana State University - Bozeman, College of Education, Health & Human Development, 2007) Lemke, Shayna Marie; Chairperson, Graduate Committee: Mary P. Miles.Women athletes are more likely to tear their anterior cruciate ligament than their male counterparts. The female athlete has a complex system of steroid hormones that are continually changing. These sex hormones that fluctuate throughout each month may influence knee injuries, specifically the anterior cruciate ligament. The increased incidence in women is thought to be multifactorial, a combination of structural, anatomical, or biomechanical factors. The NCAA has reported that 75 percent of anterior cruciate ligament injuries are non-contact in competitive jumping or pivoting sports. In this study, the effects of the menstrual cycle on neuromuscular performance were investigated. Fifteen healthy females with regular menstrual cycles completed the various tests of this study for three phases of the menstrual cycle. All females were categorized as moderate or vigorous exercisers from an activity questionnaire. This study used a repeated measures experimental design; therefore, each participant served as her own control. The participants completed a series of two tests, including functional balance and fatigability.