scholarly journals Comparison of sagittal spinal curvatures and pelvic tilt in highly trained athletes from different sport disciplines

Kinesiology ◽  
2017 ◽  
Vol 49 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Pedro A. López-Miñarro ◽  
Jose M. Muyor
Keyword(s):  
Thoracic Kyphosis ◽  
Pelvic Tilt ◽  
Trunk Flexion ◽  
Young Athletes ◽  
Spinal Curvatures ◽  
Tennis Players ◽  
Sport Training ◽  
Anterior Pelvic Tilt

The aim of this study was to compare the thoracic and lumbar curvatures and pelvic tilt in relaxed standing and maximal trunk flexion among highly-trained young athletes from three different sports disciplines. Thirty-two male canoeists, 30 male kayakers and 24 male tennis players were recruited for the study. The Spinal Mouse® system was used to measure the thoracic and lumbar sagittal spinal curvatures and pelvic tilt in relaxed standing and maximal trunk flexion in sitting with flexed (McRae & Wright test) and extended knees (sit-and-reach test). Significant differences were found in maximal trunk flexion tests among athletes. Kayakers and canoeists showed increased anterior pelvic tilt compared to tennis players in the McRae & Wright (p<.01) and decreased posterior pelvic tilt in the sit-and-reach (p<.001) tests; however, canoeists had increased posterior pelvic tilt compared to kayakers in the sit-and-reach test (p<.01). Canoeists had increased thoracic kyphosis curvature compared to kayakers (p<.01) and tennis players (p<.001) in the sit-and-reach test. Spinal sagittal curvatures and pelvic tilt in relaxed standing did not show significant differences. In conclusion, specific sport training may be associated with adaptations in the sagittal spinal curvatures and pelvic tilt when maximal trunk flexion positions are performed.

scholarly journals Sagittal spinal morphotype assessment in 8 to 15 years old Inline Hockey players

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8229 ◽  
Author(s):  
Pilar Sainz de Baranda ◽  
Antonio Cejudo ◽  
Victor Jesus Moreno-Alcaraz ◽  
Maria Teresa Martinez-Romero ◽  
Alba Aparicio-Sarmiento ◽  
...  
Keyword(s):  
Thoracic Kyphosis ◽  
Pelvic Tilt ◽  
Joint Angle ◽  
Standing Position ◽  
Lumbar Curve ◽  
Young Athletes ◽  
Spinal Curvatures ◽  
Hockey Players ◽  
Thoracic Hyperkyphosis ◽  
And Performance

Background Physiological sagittal spinal curvatures play an important role in health and performance in sports. For that reason, several scientific studies have assessed spinal morphology in young athletes. However, to our knowledge, no study has assessed the implications of Inline Hockey (IH) practice on sagittal integrative spinal morphotype in adolescent players. Objectives The aims of the present study were to describe habitual sagittal spinal posture in young federated IH players and its relationship with training load and to determine the sagittal integrative spinal morphotype in these players. Methods An observational analysis was developed to describe the sagittal spinal morphotype in young federated IH players. A total of 74 IH players from the Technification Plan organized by the Skating Federation of the Valencian Community (aged from 8 to 15 years) participated in the study. Thoracic and lumbar curvatures of the spine were measured in a relaxed standing position (SP), in a slump sitting position (SSP) and in maximum flexion of the trunk (MFT) to determine the “Sagittal Integrative Morphotype” of all players. An unilevel inclinometer was used to quantify the sagittal spinal curvatures. The Hip Joint Angle test was used to quantify the Lumbo-Horizontal angle in flexion (L-H fx) of all participants with a goniometer. Results When thoracic curvature was analyzed according to normality references, it was found that 64.9% of IH players had thoracic hyperkyphosis in a SSP, while 60.8% and 74.3% of players were classified as normal in a SP and in MFT, respectively. As for the lumbar curve, 89.2% in a SP and 55.4% in MFT were normal, whereas 68.9% of IH players presented lumbar hyperkyphosis in a SSP. Regarding the “Sagittal Integrative Morphotype,” only 17.6% of players were classified as “Normal” in the three measured positions for the thoracic curve, while 37.8% had “Thoracic Hyperkyphosis” and 41.8% presented “Functional Thoracic Hyperkyphosis.” As for the “Sagittal Integrative Lumbar Morphotype,” only 23% of athletes had a normal curve in the three positions, whereas 66.2% presented “Functional Lumbar Hyperkyphosis.” When the L-H fx was evaluated, the results showed that only 16.2% of the athletes were classified as normal. Conclusions Federative IH practice seems to cause specific adaptations in spinal sagittal morphotype. Taking into account the “Sagittal Integrative Morphotype” only 17.6% IH players presented “Normal Morphotype” with a normal thoracic kyphosis in the three measured positions, while only 23% IH players presented “Normal Morphotype” with a normal lumbar curvature in the three assessed positions. Furthermore, only 16.2% of IH players showed normal pelvic tilt. Exercise programs to prevent or rehabilitate these imbalances in young IH players are needed.

The motor and leisure time conditioning of young table tennis players' physical fitness

2020 ◽  
Author(s):  
Beata Pluta ◽  
Szymon Galas ◽  
Magdalena Krzykała ◽  
Marcin Andrzejewski
Keyword(s):  
Physical Fitness ◽  
Leisure Time ◽  
Body Height ◽  
Table Tennis ◽  
Young Athletes ◽  
Training Experience ◽  
Physical Fitness Test ◽  
Time Activity ◽  
Tennis Players ◽  
Sport Training

Abstract Background: This study aimed to determine what factors influence the level of physical fitness of young athletes. Its purpose was therefore to assess the association between physical fitness and objectively measure the lifestyle determinants of elite junior table tennis players. Methods: The basic anthropometric characteristics (body height and body weight) were collected of 87 Polish table tennis players (girls and boys, at different stages of sport training) aged 9–12 years. The level of special fitness tests from the Table Tennis Specific Battery Test were used, assessing reaction speed and displacement speed. All eight International Physical Fitness Test trials were also used to determine the level of general fitness of the participants. Selected questions from the Health Behaviour in School-Aged Children questionnaire were asked to measure factors associated with leisure time. Results: The findings confirm a relationship between sedentary forms of leisure time activity and the training of young players being at the targeted stage. Moreover, competitors with longer training experience more often chose active forms of spending free time. Conclusion: Knowledge of the global physical activity undertaken by young athletes during their leisure time provides a better understanding of their individual needs, and may help young table tennis players to succeed at a world-class level in the future.

The Relationship Between Hamstring Muscle Extensibility and Spinal Postures Varies with the Degree of Knee Extension

2013 ◽  
Vol 29 (6) ◽  
pp. 678-686 ◽  
Author(s):  
José M. Muyor ◽  
Pedro A. López-Miñarro ◽  
Fernando Alacid
Keyword(s):  
Lumbar Spine ◽  
Thoracic Spine ◽  
Pelvic Tilt ◽  
Knee Extension ◽  
Hamstring Muscle ◽  
Trunk Flexion ◽  
Spinal Curvatures ◽  
Significant Relationships ◽  
Thoracic And Lumbar Spine ◽  
The Relationship

The aim was to determine the relationship between hamstring muscle extensibility and sagittal spinal curvatures and pelvic tilt in cyclists while adopting several postures. A total of 75 male cyclists were recruited for this study (34.79 ± 9.46 years). Thoracic and lumbar spine and pelvic tilt were randomly measured using a Spinal Mouse. Hamstring muscle extensibility was determined in both legs by a passive knee extension test. Low relationships were found between hamstring muscle extensibility and spinal parameters (thoracic and lumbar curvature, and pelvic tilt) in standing, slumped sitting, and on the bicycle (r= .19;P> .05). Significant but low relationships were found in maximal trunk flexion with knees flexed (r= .29;P< .05). In addition, in the sit-and-reach test, low and statistically significant relationships were found between hamstring muscle extensibility for thoracic spine (r= –.23;P= .01) and (r= .37;P= .001) for pelvic tilt. In conclusion, hamstring muscle extensibility has a significant relationship in maximal trunk flexion postures with knees flexed and extended, but there are no relationships while standing or on the bicycle postures.

scholarly journals Influence of Hamstring Muscles Extensibility on Spinal Curvatures and Pelvic Tilt in Highly Trained Cyclists

2011 ◽  
Vol 29 (1) ◽  
pp. 15-23 ◽  
Author(s):  
José Muyor ◽  
Fernando Alacid ◽  
Pedro López-Miñarro
Keyword(s):  
Pelvic Tilt ◽  
Standing Position ◽  
Hand Position ◽  
Trunk Flexion ◽  
Anova Analysis ◽  
Spinal Curvatures ◽  
Hamstring Muscles ◽  
Straight Leg Raise ◽  
Post Hoc ◽  
Mouse System

Influence of Hamstring Muscles Extensibility on Spinal Curvatures and Pelvic Tilt in Highly Trained CyclistsThe purpose of this study was to determine the influence of hamstring muscles extensibility in standing, maximal trunk flexion with knees extended and on the bicycle in lower handlebar-hands position of highly trained cyclists. Ninety-six cyclists were recruited for the study (mean ± SD, age: 30.36 ± 5.98 years). Sagittal spinal curvatures and pelvic tilt were measured in the standing position, maximal trunk flexion with knees extended (sit-and-reach test) and while sitting on a bicycle in lower handlebar-hand position using a Spinal Mouse system. Hamstring muscles extensibility was determined in both legs by passive straight leg raise test (PSLR). The sample was divided into three groups according to PSLR angle: (1) reduced extensibility (PSLR < 80º; n = 30), (2) moderate hamstring extensibility group (PSLR = 80º; - 90º; n = 35), and (3) high hamstring extensibility (PSLR = > 90º; n = 31). ANOVA analysis showed significant differences among groups for thoracic (p < 0.001) and pelvic tilt (p < 0.001) angles in the sit-andreach test. No differences were found between groups for standing and on the bicycle position. Post hoc analysis showed significant differences in all pairwise comparisons for thoracic angle (p < 0.01) and pelvic angle (p < 0.001) in the sit-and-reach test. No differences were found in lumbar angle in any posture. In conclusion, the hamstring muscles extensibility influence the thoracic and pelvic postures when maximal trunk flexion with knees extended is performed, but not when cyclists are seated on their bicycles

scholarly journals Short-term effect of a hamstring stretching program in hamstring extensibility and sagittal spinal curvatures in high school students

2020 ◽  
Vol 15 (43) ◽  
pp. 75-84
Keyword(s):  
High School ◽  
High School Students ◽  
Intervention Program ◽  
Pelvic Tilt ◽  
Trunk Flexion ◽  
School Students ◽  
Spinal Curvatures ◽  
Pelvic Inclination ◽  
Post Test ◽  
Straight Leg Raise

Hamstring shortness and postural deformities are frequent in adolescents. For this reason, the purpose of this study was to analyse the influence of a shortterm stretching program in hamstring extensibility and sagittal spinal curvatures in high school students. Sixty-two male high school students aged 14-17 years old performed a 70 seconds hamstring stretching program (3 exercises) twice a week for five weeks during their physical education classes. Hamstring extensibility was measured by the straight leg raise test and sit-and-reach test. Thoracic and lumbar curves and pelvic inclination were measures in relaxed standing and in the sit-and-reach test. These measures were assessed before (pre-test) and after (post-test) the intervention program. Significant increases in the sit-and-reach score (d= 0.23) and in the straight leg raise angle (d= 0.85-0.90) were found. Sagittal spinal curvatures in standing showed no differences between pre- and post-test. In the maximal trunk flexion position during the sit-and-reach was detected a lower thoracic kyphosis and posterior pelvic tilt (p < 0.05) in post-test although with a low size effect (d=0.02-0.22). A hamstring muscle stretching program with a volume of 2 sessions per week (70 seconds each session), for 5 weeks, improves hamstring extensibility in adolescents and slightly reduces the thoracic bending and posterior pelvic tilt in trunk flexion postures with extended knees.

scholarly journals Static Ankle Dorsiflexion and Hip and Pelvis Kinematics During Forward Step-Down in Patients With Hip-Related Groin Pain

2020 ◽  
pp. 1-8
Author(s):  
Stefanie N. Foster ◽  
Michael D. Harris ◽  
Mary K. Hastings ◽  
Michael J. Mueller ◽  
Gretchen B. Salsich ◽  
...  
Keyword(s):  
Pelvic Tilt ◽  
Groin Pain ◽  
Medical Center ◽  
Weight Bearing ◽  
Academic Medical Center ◽  
Ankle Dorsiflexion ◽  
Future Research ◽  
Cross Sectional ◽  
Anterior Pelvic Tilt ◽  
Step Down

Context: The authors hypothesized that in people with hip-related groin pain, less static ankle dorsiflexion could lead to compensatory hip adduction and contralateral pelvic drop during step-down. Ankle dorsiflexion may be a modifiable factor to improve ability in those with hip-related groin pain to decrease hip/pelvic motion during functional tasks and improve function. Objective: To determine whether smaller static ankle dorsiflexion angles were associated with altered ankle, hip, and pelvis kinematics during step-down in people with hip-related groin pain. Design: Cross-sectional Setting: Academic medical center. Patients: A total of 30 people with hip-related groin pain (12 males and 18 females; 28.7 [5.3] y) participated. Intervention: None. Main Outcome Measures: Weight-bearing static ankle dorsiflexion with knee flexed and knee extended were measured via digital inclinometer. Pelvis, hip, and ankle kinematics during forward step-down were measured via 3D motion capture. Static ankle dorsiflexion and kinematics were compared with bivariate correlations. Results: Smaller static ankle dorsiflexion angles were associated with smaller ankle dorsiflexion angles during the step-down for both the knee flexed and knee extended static measures. Among the total sample, smaller static ankle dorsiflexion angle with knee flexed was associated with greater anterior pelvic tilt and greater contralateral pelvic drop during the step-down. Among only those who did not require a lowered step for safety, smaller static ankle dorsiflexion angles with knee flexed and knee extended were associated with greater anterior pelvic tilt, greater contralateral pelvic drop, and greater hip flexion. Conclusions: Among those with hip-related groin pain, smaller static ankle dorsiflexion angles are associated with less ankle dorsiflexion motion and altered pelvis and hip kinematics during a step-down. Future research is needed to assess the effect of treating restricted ankle dorsiflexion on quality of motion and symptoms in patients with hip-related groin pain.

Change in Drop-Landing Mechanics Over 2 Years in Young Athletes After Anterior Cruciate Ligament Reconstruction

2019 ◽  
Vol 47 (11) ◽  
pp. 2608-2616 ◽  
Author(s):  
Matthew P. Ithurburn ◽  
Mark V. Paterno ◽  
Staci Thomas ◽  
Michael L. Pennell ◽  
Kevin D. Evans ◽  
...  
Keyword(s):  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Reaction Force ◽  
Knee Extension ◽  
Trunk Flexion ◽  
Young Athletes ◽  
Vertical Ground Reaction Force ◽  
Drop Landing ◽  
Vertical Ground ◽  
Anterior Cruciate

Background: While between-limb landing asymmetries after anterior cruciate ligament reconstruction (ACLR) are linked with poor function and risk of additional injury, it is not currently understood how landing symmetry changes over time after ACLR. Purpose/Hypothesis: The purpose was to investigate how double-legged drop vertical jump (DVJ) landing and single-legged drop-landing symmetry changed from the time of return-to-sport (RTS) clearance to 2 years later in a prospective cohort of young athletes after ACLR. It was hypothesized that double-legged DVJ landing and single-legged drop-landing symmetry would improve from the time of RTS to 2 years later. Study Design: Descriptive laboratory study. Methods: The authors followed 64 young athletes with primary, unilateral ACLR for 2 years after RTS clearance. At the time of RTS and 2 years later, between-limb symmetry values for biomechanical variables of interest (VOIs) were calculated with 3-dimensional motion analysis during double-legged DVJ and single-legged drop-landing tasks. VOIs included knee flexion excursion, peak internal knee extension moment, peak vertical ground-reaction force, and peak trunk flexion (for single-legged task only). Symmetry values and proportions of participants meeting 90% symmetry cutoffs were compared between time points. Results: For double-legged DVJ landing, symmetry values for all VOIs and the proportions meeting 90% cutoffs for peak internal knee extension moment and peak vertical ground-reaction force were higher at 2 years after RTS as compared with RTS. For single-legged drop-landing, symmetry values were higher for knee flexion excursion and lower for peak trunk flexion at 2 years after RTS as compared with RTS, but the proportions meeting 90% cutoffs for all VOIs did not differ between time points. Conclusion: Double-legged DVJ landing symmetry improved across VOIs over the 2 years after RTS following ACLR, while single-legged drop-landing did not improve as consistently. The implications of longitudinal landing asymmetry after ACLR should be further studied.

Standardization of lateral pelvic radiograph is necessary to predict spinopelvic mobility accurately

2020 ◽  
Vol 102-B (7_Supple_B) ◽  
pp. 41-46 ◽  
Author(s):  
Michael Ransone ◽  
Keith Fehring ◽  
Thomas Fehring
Keyword(s):  
Pelvic Tilt ◽  
Preoperative Planning ◽  
Sacral Slope ◽  
Sitting Posture ◽  
Sit To Stand ◽  
Pelvic Radiograph ◽  
Increased Risk ◽  
Anterior Pelvic Tilt ◽  
B 41 ◽  
The Mean

Aims Patients with abnormal spinopelvic mobility are at increased risk for instability. Measuring the change in sacral slope (ΔSS) can help determine spinopelvic mobility preoperatively. Sacral slope (SS) should decrease at least 10° to demonstrate adequate posterior pelvic tilt. There is potential for different ΔSS measurements in the same patient based on sitting posture. The purpose of this study was to determine the effect of sitting posture on the ΔSS in patients undergoing total hip arthroplasty (THA). Methods In total, 51 patients undergoing THA were reviewed to quantify the variability in preoperative spinopelvic mobility when measuring two different sitting positions using SS for planning. Results A total of 32 patients had standardized relaxed sitting radiographs, while 35 patients had standardized flexed sitting images. Of the 32 patients with relaxed sitting views, the mean ΔSS was 20.7° (SD 8.9°). No patients exhibited an increase in SS during relaxed sitting (i.e. anterior pelvic tilt or so-called reverse accommodation). Of the 35 patients with flexed sitting radiographs, the mean ΔSS was only 2.1° (SD 9.7°) with 16/35 (45.71%) showing anterior pelvic tilt, or so-called reverse accommodation, unexpectedly increasing the sitting SS compared to the standing SS. Overall, 18 patients had both relaxed sitting and flexed sitting radiographs. In patients with both types of sitting radiographs, the mean relaxed sit to stand ΔSS was 18.06° (SD 6.07°), while only a 3.00° (SD 10.53°) ΔSS was noted when flexed sitting. There was a mean ΔSS difference of 15.06° (SD 7.67°) noted in the same patient cohort depending on sitting posture (p < 0.001). Conclusion A 15° mean difference was noted depending on the sitting posture of the patient. Since decisions on component position can be made on preoperative lateral sit-stand radiographs, postural standardization is crucial. If using ΔSS for preoperative planning, the relaxed sitting radiograph is preferred. Cite this article: Bone Joint J 2020;102-B(7 Supple B):41–46.

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