Medicine and Health Sciences Commons^™

The Impact Of Left Hemisphere Stroke On Force Control With Familiar And Novel Objects: Neuroanatomic Substrates And Relationship To Apraxia, Amanda M. Dawson, Laura J. Buxbaum, Susan V. Duff

Physical Therapy Faculty Articles and Research

Fingertip force scaling for lifting objects frequently occurs in anticipation of finger contact. An ongoing question concerns the types of memories that are used to inform predictive control. Object-specific information such as weight may be stored and retrieved when previously encountered objects are lifted again. Alternatively, visual size and shape cues may provide estimates of object density each time objects are encountered. We reasoned that differences in performance with familiar versus novel objects would provide support for the former possibility. Anticipatory force production with both familiar and novel objects was assessed in six left hemisphere stroke patients, two of whom …

Performance Of A Hip Protector Depends On Its Position During A Fall, Woochol J. Choi, Joaquin A. Hoffer, Stephen N. Robinovitch

Physical Therapy Faculty Articles and Research

"Hip protectors are designed to attenuate and redistribute the force applied to the hip region during a fall, and thereby reduce risk for hip fracture [1]. However, little information exists on the effectiveness of hip protectors in achieving these goals, and how this is altered by displacement of the hip protector relative to the greater trochanter (GT). In the current study, we tested these issues."

Gastrocnemius-Soleus Muscle Tendon Unit Changes Over The First 12 Weeks Of Adjusted Age In Infants Born Preterm, Marybeth Grant-Beuttler, Robert J. Palisano, Debra P. Miller, Barbara Reddien Wagner, Carolyn B. Heriza, Patricia A. Shewokis

Physical Therapy Faculty Articles and Research

Background and Purpose: Differences in the gastrocnemius-soleus muscle and tendon have been documented shortly after birth in infants born preterm compared with infants born at term. Knowledge of muscle tendon unit lengths at term age to 12 weeks of age in infants born preterm may be useful in understanding motor development.

Participants and Method: Gastrocnemius-soleus muscle tendon unit lengths were compared at term age, at 6 weeks of age, and at 12 weeks of age (preterm adjusted age) in 20 infants born full term and 22 infants born preterm.

Results: Significant differences were found between the 2 groups on taut …

Author Response To Invited Commentary By Heathcock [Commentary For: Gastrocnemius/Soleus Muscle Tendon Unit Changes Over The First 12 Weeks Of Adjusted Age In Infants Born Preterm], Marybeth Grant-Beuttler, Robert J. Palisano, Debra P. Miller, Barbara Reddien Wagner, Carolyn B. Heriza, Patricia A. Shewokis

Physical Therapy Faculty Articles and Research

"We thank Heathcock for taking the time to write her commentaryregarding our study. Her comments are interesting, and our subsequent investigation into these ideas has led us to uncover some enlightening evidence in relation to the topics raised in the commentary. We will attempt to review each of the topics raised and the evidence associated with these topics."

Interrupted Resistance Training And Bmd In Growing Rats, J. K. Godfrey, B. D. Kayser, G. V. Gomez, Jason Bennett, S. V. Jaque, Ken D. Sumida

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

A resistance training program, where the exercise was uninterrupted (UT, i.e. continuous repetitions) was compared against another resistance training program where the exercise was interrupted (IT, i.e. 2 exercise sessions during a training day) for enhancing bone modeling and bone mineral density (BMD) in maturating animals. The total volume of work performed between the two resistance training programs was equivalent by design. Young male rats (similar to 8 weeks old) were randomly divided into Control (Con, n = 8), UT (n = 8) and IT (n = 7) resistance trained groups. The UT and IT groups were conditioned to climb …