jump apparatus (Gill Athletics, Champaign, IL), before placing hands back on the hips prior to landing. 5 The aim of this study was to design a new protocol to reliably assess single-leg TTS (SL-TTS), while addressing the previously highlighted limitations in existing procedures (with the use of a
Search Results
Test–Retest Reliability of Single-Leg Time to Stabilization Following a Drop-Landing Task in Healthy Individuals
Aaron Byrne, Clare Lodge, and Jennifer Wallace
Gaze Accuracy Differences During Single-Leg Balance Following Anterior Cruciate Ligament Reconstruction
Stephan G. Bodkin, Jay Hertel, and Joseph M. Hart
. Individuals following ACLR were hypothesized to demonstrate lower visual accuracy during a single-leg balance task compared with healthy individuals. These impairments in visual accuracy were hypothesized to have a relationship with decreased postural control. Methods This was a case-control study performed
Comparison of 5 Normalization Methods for Knee Joint Moments in the Single-Leg Squat
Steven M. Hirsch, Christopher J. Chapman, David M. Frost, and Tyson A.C. Beach
assessed using NJM about the mediolateral (NJM-ML) and anteroposterior (NJM-AP) axes of the knee joint during a single-leg squat movement, using data extracted from a published study that were collected for a different purpose. 13 It was hypothesized that dividing NJM by mass × height and mass × leg
High Thoracic Kyphosis and Backward Trunk Inclination Angles in the Single-Leg Standing Position Associate With Medial Elbow Injuries in Youth Baseball Players: A Cross-Sectional Study
Akira Saito, Kyoji Okada, Hiromichi Sato, Kazuyuki Shibata, and Tetsuaki Kamata
during single-leg standing was associated with elbow injuries in baseball players. Laudner et al 7 indicated that the lumbopelvic tilt from the standing position to the single-leg standing position was correlated with elbow valgus torque during pitching. Chaudhari et al 8 reported that professional
Relationship Between Nordic Hamstring Strength and Single Leg Bridge Test in University Soccer Players
Yuta Murakami, Satoru Nishida, Riku Yoshida, Kazuki Kasahara, Akira Kumazaki, Hirokazu Sakuma, Hirosi Fujimoto, Yuki Kaneko, Otoka Abe, and Masatoshi Nakamura
. Moreover, the single leg bridge test (SLBT), which measures hamstring function, has been used to predict the risk of HSI. 12 In terms of SLBT scores, the number of trials is rated as poor if it is <20, average if it is 25 or more, and good if it is 30 or more. 12 According to a previous study on amateur
The Relationship Between Concentric Hip Abductor Strength and Performance of the Y-Balance Test (YBT)
Peter Francis, Kay Gray, and Nic Perrem
Key Points ▸ Hip abductor strength is moderately associated with single-leg dynamic balance as measured by the Y-Balance test (YBT). ▸ The association between hip strength and single-leg dynamic balance is strongest during the posterior reaches of the YBT. ▸ The requirement for greater hip flexion
Comparative Effects of 4 Single-Leg Squat Exercises in Subjects With Gluteus Medius Weakness
Hae-rim Han, Chung-hwi Yi, Sung-hyun You, Heon-seock Cynn, One-bin Lim, and Jae-ik Son
Biomechanically, the gluteus medius (GMED) controls femoral motion during dynamic lower-extremity motion, and counteracts gravity to stabilize the pelvis in a single-leg stance. 1 , 2 However, when the GMED becomes weak, numerous neuromuscular problems including hip joint pathology, lateral hip
Tibial Accelerations During the Single-Leg Hop Test: Influence of Fixation
Hannah W. Tucker, Emily R. Tobin, and Matthew F. Moran
, specifically single-leg maximal hop and hold (SLH), have commonly been included. 2 – 4 Body-worn inertial measurement units (IMUs) have been utilized to establish a strong correlation between tibial acceleration and peak landing forces during a vertical jump 5 ; however, only one study has reported on their
Reliability of Three Single-Leg Hop Tests
Laurie D. Booher, Karla M. Hench, Teddy W. Worrell, and Jill Stikeleather
Traditionally, lower extremity strength assessment has been performed in an open kinetic chain. Several authors, however, recommend closed kinetic chain assessment of lower extremity performance. Reliability of closed kinetic chain tests is not available. Therefore, the purpose of this study was to determine the reliability of the following single-leg hop tests: hop for distance, 6-m hop for time, and 30-m agility hop. Eighteen subjects (4 males and 14 females) participated in this study. An ANOVA repeated measures analysis revealed significant differences between the test trials within and between sessions for all dependent variables. However, when the mean of two test trials was analyzed, the three single-leg hop tests values were stable, that is, intraclass correlation coefficient (ICC 2,1) ranged from 0.77 to 0.99. Results demonstrate that these three single-leg hop tests were reliable as used in this study. Future research is needed to determine the sensitivity of these tests in the assessment of lower extremity performance following injury and following rehabilitation procedures.
Subsequent Jumping Increases the Knee and Hip Abduction Moment, Trunk Lateral Tilt, and Trunk Rotation Motion During Single-Leg Landing in Female Individuals
Masato Chijimatsu, Tomoya Ishida, Masanori Yamanaka, Shohei Taniguchi, Ryo Ueno, Ryohei Ikuta, Mina Samukawa, Takumi Ino, Satoshi Kasahara, and Harukazu Tohyama
reduced to minimize the risk of ACL injuries, especially in female athletes. Double-/single-leg drop landing (SDL) and drop vertical jumping (SDVJ) are common landing tasks used to evaluate the knee abduction moment. 8 , 11 – 14 The presence or absence of a subsequent jump after landing leads to
