Training of transversus abdominis activation in the supine position with ultrasound biofeedback translated to increased transversus abdominis activation during upright loaded functional tasks.

Objective: To determine whether healthy adults successfully completing transversus abdominis (TrA) muscle activation training in the supine position with clinician and ultrasound (US) imaging feedback increase their TrA activation during lifting and reaching tasks performed in the standing position.

Design: Prospective longitudinal within-subject, repeated-measures (RM) study.

Setting: University laboratory.

Reproducibility of ultrasound measurement of transversus abdominis during loaded, functional tasks in asymptomatic young adults.

Objective: To examine the reproducibility of repeat tests of ultrasound imaging (USI) measurement of transversus abdominis (TrA) activation in a single group of asymptomatic adults performing reaching and lifting tasks before and after abdominal drawing-in technique (ADIM) training in the supine position with TrA USI biofeedback.

Design: Clinical measurement, longitudinal reliability study.

Setting: University laboratory.

Mapping two new points on the tennis expertise continuum: tactical skills of adult advanced beginners and entry-level professionals during competition.

Research examining problem representations of individuals during task performance is advancing our understanding of information processing and expertise in a variety of sports. However, few studies using similar methodology have been conducted on individuals of various competitive standards in one domain in similar contexts. This study examined problem representations of adult advanced beginners and entry-level professionals accessed during singles tennis competition (n = 12).

Effect of two different videotaped instructional models on motor and verbal behaviors of adults' lifting: a pilot study.

This study examined two different videotaped instructional models on subsequent motor and verbal behaviors of adults (N=9) learning how to lift properly. The correct model group viewed a narrated videotape of a skilled individual demonstrating lifting; the learning model group viewed a videotape of an unskilled individual being taught lifting by an instructor, and the controls received no intervention. Adults lifted from floor to waist a plastic crate during 15 acquisition and 3 retention trials and lowered the crate from waist to floor during 3 transfer trials.