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Health and Physical Education

Western Michigan University

Theses/Dissertations

1998

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The Effect Of Unloading Body Weight During Aerobic Exercise On Blood Pressure, Heart Rate, And Perceived Exertion, Carolynn J. Bolander Apr 1998

The Effect Of Unloading Body Weight During Aerobic Exercise On Blood Pressure, Heart Rate, And Perceived Exertion, Carolynn J. Bolander

Masters Theses

The problem of the study was to examine the blood pressure, heart rate, and rating of perceived exertion of asymptomatic, active individuals during submaximal treadmill exercise while using an unloading system. Two levels of unloading, 20% unloaded body weight (UBW) and 40% UBW, were compared to 0% UBW. Treadmill speed was determined by the speed required to reach a steady state heart rate of 70% of maximum heart rate in an unloaded state. Twenty subjects, between the ages of 18 and 42 years, served as subjects. Subjects were grouped with respect to fitness level; walkers were those subjects who walked …


The Reliability Of Emg Normalization Procedures For Three Muscles Involved In Knee Extension, James John Sweet Apr 1998

The Reliability Of Emg Normalization Procedures For Three Muscles Involved In Knee Extension, James John Sweet

Masters Theses

Analyses of 3 knee extensors, vastus medialis, rectus femoris, and vastus lateralis, were conducted to examine the reliability of (a) maximal voluntary isometric contraction (MVIC) across trials (2), days (5), and joint angles (5); and (b) normalized EMG responses during dynamic knee extension at 2 submaximal work loads. Strength (cable tension) and integrated peak EMG (surface electrodes) were measured during the MVIC. Subjects (N = 44) performed 2 consecutive MVICs with 2 min rest between trials at 110°, 90°, 70°, 50°, and 30° of knee flexion, followed by 2 submaximal dynamic knee extension exercises. Intraclass correlation (R) values for the …