scholarly journals The Effects of Body Position on Pelvic Tilt Angles Measured with a Smartphone-Based Navigated Ultrasound System in Symptom-Free Young Adults

2018 ◽  
Vol 3 (1) ◽  
pp. 18 ◽  
Author(s):  
Carlos Marques ◽  
Tobias Martin ◽  
Franziska Fiedler ◽  
Mathias Weber ◽  
Frank Lampe ◽  
...  
Keyword(s):  
Young Adults ◽  
Pelvic Tilt ◽  
Body Position ◽  
Ultrasound System ◽  
Navigated Ultrasound

Intra- and Inter-rater Reliability of Navigated Ultrasound in the Assessment of Pelvic Tilt in Symptom-Free Young Adults

2018 ◽  
Vol 37 (10) ◽  
pp. 2333-2342 ◽  
Author(s):  
Carlos J. Marques ◽  
Tobias Martin ◽  
Franziska Fiedler ◽  
Mathias Weber ◽  
Viktor Breul ◽  
...  
Keyword(s):  
Young Adults ◽  
Pelvic Tilt ◽  
Rater Reliability ◽  
Navigated Ultrasound

Biomechanical responses of young adults with unilateral transfemoral amputation using two types of mechanical stance control prosthetic knee joints

2020 ◽  
Vol 44 (5) ◽  
pp. 314-322
Author(s):  
Jan Andrysek ◽  
Daniela García ◽  
Claudio Rozbaczylo ◽  
Carlos Alvarez-Mitchell ◽  
Rebeca Valdebenito ◽  
...  
Keyword(s):  
Young Adults ◽  
Knee Joint ◽  
Stance Phase ◽  
Pelvic Tilt ◽  
Swing Phase ◽  
Knee Joints ◽  
Transfemoral Amputation ◽  
Phase Duration ◽  
Prosthetic Knee ◽  
Stance Control

Background: Prosthetic knee joint function is important in the rehabilitation of individuals with transfemoral amputation. Objectives: The objective of this study was to assess the gait patterns associated with two types of mechanical stance control prosthetic knee joints—weight-activated braking knee and automatic stance-phase lock knee. It was hypothesized that biomechanical differences exist between the two knee types, including a prolonged swing-phase duration and exaggerated pelvic movements for the weight-activated braking knee during gait. Study design: Prospective crossover study. Methods: Spatiotemporal, kinematic, and kinetic parameters were obtained via instrumented gait analysis for 10 young adults with a unilateral transfemoral amputation. Discrete gait parameters were extracted based on their magnitudes and timing. Results: A 1.01% ± 1.14% longer swing-phase was found for the weight-activated braking knee (p < 0.05). The prosthetic ankle push-off also occurred earlier in the gait cycle for the weight-activated braking knee. Anterior pelvic tilt was 3.3 ± 3.0 degrees greater for the weight-activated braking knee. This range of motion was also higher (p < 0.05) and associated with greater hip flexion angles. Conclusions: Stance control affects biomechanics primarily in the early and late stance associated with prosthetic limb loading and unloading. The prolonged swing-phase time for the weight-activated braking knee may be associated with the need for knee unloading to initiate knee flexion during gait. The differences in pelvic tilt may be related to knee stability and possibly the different knee joint stance control mechanisms. Clinical relevance Understanding the influence of knee function on gait biomechanics is important in selecting and improving treatments and outcomes for individuals with lower-limb amputations. Weight-activated knee joints may result in undesired gait deviations associated with stability in early stance-phase, and swing-phase initiation in the late stance-phase of gait.

scholarly journals Trunk Muscle Activities and Anterior Pelvic Tilt of Healthy Young Adults Performing the Double-leg Straight-leg Lowering Test

2015 ◽  
Vol 30 (5) ◽  
pp. 741-744
Author(s):  
Makoto SUZUKI ◽  
Hiroto SUZUKI ◽  
Toru NISHIYAMA ◽  
Yuki FURUDATE ◽  
Shinji KAWARAGI ◽  
...  
Keyword(s):  
Young Adults ◽  
Pelvic Tilt ◽  
Trunk Muscle ◽  
Anterior Pelvic Tilt

Effect of exercise on pulmonary diffusing capacity

1963 ◽  
Vol 18 (3) ◽  
pp. 447-456 ◽  
Author(s):  
G. M. Turino ◽  
E. H. Bergofsky ◽  
R. M. Goldring ◽  
A. P. Fishman
Keyword(s):  
Carbon Monoxide ◽  
Young Adults ◽  
Steady State ◽  
Body Position ◽  
Diffusing Capacity ◽  
Pulmonary Diffusing Capacity ◽  
Graded Exercise ◽  
Normal Man ◽  
The Difference

The effect of graded exercise on the pulmonary diffusing capacity for both oxygen and carbon monoxide measured simultaneously was studied in healthy young adults by steady-state methods. Pulmonary diffusing capacity for oxygen increases progressively with increasing severity of exercise; it exceeds the DlCO at high levels of exercise by amounts greater than can be accounted for by the difference in diffusivity of the test gases. Diffusing capacity for carbon monoxide increases less than DlOO2 for comparable grades of exercise but no definite plateau value could be established. The supine or upright body position does not influence the values of either DlOO2 or DlCO during exercise. Diffusing capacity of the lung for oxygen does not limit the maximum levels of exercise which may be achieved by normal man. Submitted on August 6, 1962

scholarly journals Effects of Room Temperature and Body Position Change on Cerebral Blood Volume and Center-of-foot Pressure in Healthy Young Adults

2008 ◽  
Vol 27 (2) ◽  
pp. 63-70 ◽  
Author(s):  
Shinichi Demura ◽  
Shunsuke Yamaji ◽  
Tamotsu Kitabashi ◽  
Takayoshi Yamada ◽  
Masanobu Uchiyama
Keyword(s):  
Young Adults ◽  
Blood Volume ◽  
Room Temperature ◽  
Cerebral Blood Volume ◽  
Body Position ◽  
Position Change ◽  
Foot Pressure ◽  
Center Of Foot Pressure

scholarly journals Effects of attentional focus in the Crawl performance: Body positioning and breathing components

1969 ◽  
Vol 6 (1) ◽  
Author(s):  
Silmara Cristina Pasetto ◽  
Bettina U. Weissler Ried ◽  
Andrea Michele Freudenheim ◽  
Umberto Cesar Correa
Keyword(s):  
Young Adults ◽  
Body Position ◽  
Attentional Focus ◽  
Focus Of Attention ◽  
Water Line ◽  
Swim Performance ◽  
External Focus ◽  
Internal Focus ◽  
Task Component ◽  
Body Positioning

The present study followed up on previous findings showing greater movement efficiency when performers adopt an external relative to an internal focus of attention. We used a swimming task to examine if those effects were dependent of the task component. Specifically, the aim of this study was to investigate the effects of attentional focus related to breathing and body position on crawl swim performance. Eighteen young adults (20.1 years old; ±3.0) participated in the present study. The task required participants to cover a 16 m swimming crawl, as fast as possible. Participants were asked to “keep body at water line” (external focus) or to “keep your body horizontal” (internal focus), and to “breathe when hand leaves the water” (external focus) or “breathe when head turns sideways” (internal focus). The dependent variable was time spent to cross the swimming pool in seconds and tenths of seconds. Two-way ANOVA (2 focus X 2 components) did not show any significant differences between external and internal focus in both components. The results led to the conclusion that when the focus was related to body position and breathing, the external and internal attentional focus had similar effects on performance of the crawl swim.

scholarly journals Pelvic Tilt Angle Differences Between Symptom-Free Young Subjects and Elderly Patients Scheduled for THA: The Rationale for Tilt-Adjusted Acetabular Cup Implantation

2018 ◽  
Vol 12 (1) ◽  
pp. 364-372 ◽  
Author(s):  
Carlos J. Marques ◽  
Tobias Martin ◽  
Andrzej Kochman ◽  
Adrian Goral ◽  
Frank Lampe ◽  
...  
Keyword(s):  
Supine Position ◽  
Pelvic Tilt ◽  
Body Position ◽  
Clinical Importance ◽  
Standing Position ◽  
Upright Position ◽  
Ultrasound Measurement ◽  
Acetabular Cup ◽  
Tilted Position ◽  
Young Subjects

Background: The question whether Pelvic Tilt (PT) angles measured in the supine position are adequate for the alignment of the acetabular cup without an adjustment for anatomical differences between patients is of clinical importance. The aim of this work was to test for factors that can significantly affect PT angles. Methods: In the present retrospective cohort comparison, the PT angles of 12 Symptom-Free Young Subjects (SFYS) and 45 patients scheduled for Total Hip Arthroplasty (THA) were compared. The data was collected during two studies with the use of a novel smartphone-based navigated ultrasound measurement system. Multi-factorial analysis of variance was run to determine which factors significantly affect PT. Results: Body position (F= 126.65; P< 0.001) and group (SFYS vs. THA patients) (F= 17.52; P< 0.001) had significant main effects on PT. There was also a significant interaction between body position and group (F= 25.59; P< 0.001). The mean PT increased by 8.1° from an interiorly to a neutral tilted position (P< 0.001) and 21.4° from a neutral to a posteriorly tilted position (P< 0.001) with the transition from the supine into the upright position for the SFYS and THA patients, respectively. Conclusion: In both groups, PT changed significantly with a transition from the supine to the upright position. A position-dependent mean PT increase in the patient group showed that acetabular cup alignment based on PT in the supine position is not reliable without taking into consideration the inclination of the pelvis in standing position. This may lead to instability and dislocations.

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