Forward Head Research Articles

Investigating the Association of Computer Vision Syndrome with Forward-Headed and Kyphotic Posture Among Undergraduate Information Technology Student

Introduction: Computers and visual display devices have become indispensable in our daily lives. The frequent use of these devices has led to the emergence of computer vision syndrome (CVS). Coupled with poor ergonomics, musculoskeletal diseases are on the rise due to excessive computer use. Accordingly, this study investigates the association between CVS and forward-headed and kyphotic posture in undergraduate IT students. Materials and Methods: We conducted an observational cross-sectional study involving 300 undergraduate IT students. We used a modified CVS questionnaire to assess CVS and the Kinovea software to diagnose forward head posture. We also used the occiput wall distance test to assess kyphosis. Results: In this study, a majority of undergraduate students (88%, 264 out of 300) exhibited CVS, resulting in forward head posture and kyphosis. There was a significant association between CVS, forward head posture, and kyphosis. Conclusion: Computer vision syndrome is strongly associated with forward head posture and kyphosis. Prolonged computer device usage leads to changes in body posture, affecting the neck, shoulders, elbows, wrists/hands, upper back, and lower back.

Biomechanical factors influencing mental health in college students and the role of physical activity in cognitive resilience

The Mental Health (MH) of college students is increasingly becoming a public health concern, with rising rates of depression, anxiety, and stress. This study aims to explore the relationship between Biomechanical Factors (BF), Physical Activity (PA), and MH outcomes in college students, addressing gaps in current research that frequently overlook the biomechanical features of physical well-being. A cross-sectional observational design was employed, involving 200 college students aged 18–24. SP underwent comprehensive assessments, including postural analysis, movement pattern evaluation, and MH screening. Physical activity levels and cognitive resilience were also measured to evaluate their roles in mediating and moderating the relationships between BF and MH. Key findings revealed that poor biomechanical alignment, such as forward head posture and movement asymmetry, were significantly associated with higher levels of depression, anxiety, and stress. Correlation analysis showed that forward head posture correlated positively with depression (r = 0.52, p < 0.01) and anxiety (r = 0.47, p < 0.01). Movement asymmetry was also associated with MH disturbances (depression: r = 0.45, p < 0.01). PA mediated the relationship between BF and MH, with significant indirect effects via PA for forward head posture (0.18, p < 0.05). Cognitive resilience emerged as a significant moderator, buffering the negative impact of biomechanical inefficiencies on MH outcomes. Within-subject comparisons indicated improvements in BF and MH scores over a one-month follow-up, with decreases in forward head posture (−2.2 ± 1.5 degrees, p < 0.05) and depression scores (−1.5 ± 1.2, p < 0.01).

The Addition Of Pressure Biofeedback Unit In Forward Head Exercise Is Better On Improving Neck Alignment Asymptomatic Forward Head Posture

Asymptomatic forward head posture is a chronic condition without symptoms. Improvement in neck alignment can be enhanced by adding a pressure biofeedback unit to forward head exercises. The aim of this study was to determine if the addition of a pressure biofeedback unit to forward head exercises is more effective in improving neck alignment in high school students with asymptomatic forward head posture compared to forward head exercises alone. This study was conducted at SMA N 1 Semarapura in April-May 2021, using a two-group pre-post test design with simple random sampling. There were two groups consisting of 14 samples each. Group I was given forward head exercises with the addition of a pressure biofeedback unit, and Group II was given forward head exercises alone. The outcome measure for neck alignment was the craniovertebral angle, measured using a goniometer. Analysis was performed using the Shapiro-Wilk test and Levene's test. The difference in mean neck alignment was tested using paired t-tests. An independent sample t-test showed an increased difference in neck alignment in both groups. In Group I, the mean pre-test score was 45.57±1.45 and the post-test neck alignment was 53.21±1.36, with a mean difference of 7.35±1.49 and a p-value of 0.000. In Group II, the pre-test score was 45.78±1.85 and the post-test score was 50.28±1.22, with a mean difference of 4.5±1.2 and a p-value of 0.000. A significant difference in neck alignment improvement was found based on the comparison test, with a p-value of 0.000. The study results indicate a significant difference in the improvement of neck alignment between the two groups. The addition of a pressure biofeedback unit to forward head exercises is effective in improving neck alignment in high school students with asymptomatic forward head posture at SMA N 1 Semarapura.

Gait performance changes after ten cervical retractions

Background and Study Aim. Students are prone to spine overloading, as they often spend prolonged periods in unfavorable postures. They tend to struggle with balancing study time and leisure physical activity. The head and neck regions are particularly rich in proprioceptors. Prolonged forward head posture (protraction) can lead to balance disturbances. This, in turn, affects gait and overall body posture. The aim of this study was to examine the effects of a series of corrective active head exercises on gait, a fundamental form of movement, in a group of healthy university students. Material and Methods. Gait patterns were assessed in 10 healthy male full-time students with an average age of 22.8 years (SD = 1.1). The assessment was based on the regional distribution of plantar pressure across two measurement sessions. One session was conducted before, and one after performing 10 active head retractions. Gait changes were analyzed in ten foot regions for 200 steps of each participant. Results. After 10 cervical retractions, a decrease in pressure, ground reaction force, contact time, and area values was observed in the 1st metatarsal head (1MTH). Conversely, an increase in these quantities was found in the toes. Additionally, there was a tendency toward a decrease in the contact area of the heel and 3rd metatarsal head (3MTH), along with increased contact time in the midfoot. Performing 10 neck retractions altered gait by inducing heel supination. It also increased hallux involvement in propulsion and widened the base of toe support. Conclusions. Even a few movements that correct head protraction have an immediate effect on whole-body movement. This effect suggests potential benefits of incorporating neck retractions into physical education programs for students. Even when time-consuming forms of regular exercise are not feasible, performing just a few neck-correcting movements can positively impact overall body movement.

Modelling Sea-Surface Wave Motion and Ship Response Using Smoothed Particle Hydrodynamics and Finite Element Analysis

The response of a ship or other vessel to surface sea waves, including extreme waves, may compromise crew and vessel safety and long-term operational capability. Herein, a novel high-fidelity numerical time-dependent simulation approach is presented using Smoothed Particle Hydrodynamics (SPH) for modelling sea waves coupled with Finite Element Analysis for modelling vessel structural response under wave loading conditions. The results are compared with physical scale model wave tank test results. Good agreement was obtained for heave and pitch motions and vertical bending moments for various forward (head) speeds in regular head waves, heave and pitch motions, and vertical bending moments. High computational demands can be met by the increasing availability of computation power. Ongoing research is outlined. The implications for the design of vessels such as ships and for through-life assessment are discussed.

Assessment of Cervical Joint Position Sense and Head Posture in Individuals With Myogenic Temporomandibular Dysfunctions and Identifying Related Factors: A Case-Control Study.

Temporomandibular dysfunctions (TMDs) have the potential to cause changes in cervical muscle strength, muscle endurance and position sense by changing muscle activation patterns, especially as a result of forward head posture. The effects of TMDs on cervical joint position sense (CJPS) and head posture remain controversial. The aim of this study was to evaluate the head posture and CJPS of individuals with TMDs and compare them with healthy individuals. This research, which was designed as a case-control study, was concluded with the inclusion of total of 84 participants (42 individuals diagnosed with myogenic TMDs, 42 controls). The assessment of participants included pain severity, neck and jaw functionality and disability, CJPS, head posture and temporomandibular joint (TMJ) range of motion (ROM). Individuals with TMDs exhibited higher angular deviation in CJPS during flexion and extension (p < 0.001). Additionally, individuals with TMDs demonstrated higher TMJ pain, limitation and dysfunction severity, as well as a more limited TMJ ROM (p < 0.001). Head posture was similar between groups (p > 0.05). There is a significant relationship between VAS-TMJ with VAS-cervical, FAI, NDI, JFLS-8 and TMJ ROM (p < 0.05). Moreover, a significant correlation was observed between NDI with FAI and TMJ ROM (p < 0.05). These results indicate that in addition to higher pain severity, disability and lower jaw ROM, CJPS of individuals with TMDs is also negatively affected. Also, parameters related to disability and functionality of cervical and TMJ were significantly correlated. Further studies are needed to determine the factors contributing to these results.

Forward head posture in sports-involved children

Purpose: Forward head posture (FHP) is the most common cervical postural fault in the sagittal plane that can cause various issues and conditions. The purpose of this study is to determine the prevalence of FHP among sports-involved children and to examine the differences in craniovertebral angle (CVA) with regard to gender, age, neck pain, and the sports in which they participate. Methods: A cross-sectional study was conducted among 154 sports-involved children (76 males and 78 females), aged 11–14, participating in various sports (basketball, football, volleyball, and athletics). After obtaining signed consent, photography of the sagittal view was performed in a standing position, which was then used to measure the CVA using the Web Plot Digitizer software. A questionnaire was used to gather data about gender, age, sports in which a participant is involved, presence of neck pain, and pain scale. Results: Among the 154 children, 37 (24.03%) exhibited FHP (15 males, 22 females). The mean CVA for the entire sample was 51.30° ± 6.20°. Female participants had a significantly lower CVA (p = .021) compared to male participants. No significant differences were found with regard to age, presence of neck pain, or engagement in a specific sport. Conclusion: FHP is present in sports-involved children, with a higher prevalence among females.

Real-Time Forward Head Posture Detection and Correction System Utilizing an Inertial Measurement Unit Sensor

Forward head posture (FHP) has become a prevailing health issue in modern society as people spend more time on computers and smartphones. FHP is a posture where the head is forward and the anterior and posterior curvatures of the lower cervical and upper thoracic spines are both, respectively, exaggerated. FHP is often associated with neck pain, bad static balance, and hunched shoulders or back. To prevent this, consciously maintaining good posture is important. Therefore, in this study, we propose a system that gives users real-time, accurate information about their neck posture, and it also encourages them to maintain a good posture. This inexpensive system utilizes a single inertial measurement unit sensor and a Raspberry Pi system to detect the changes in state that can progress to an FHP. It retrieves data from the sensor attached to the user’s cervical spine to indicate their real-time posture. In a real-world office environment experiment with ten male participants, the system accurately detected the transition to the FHP state for more than 10 s, with a delay of less than 0.5 s, and it also provided personalized feedback to encourage them to maintain good posture. All ten participants recognized that their average craniovertebral angle had to be increased after receiving visual alerts regarding their poor postures in real time. The results indicate that the system has potential for widespread applications.

A period of backwards walking affects the craniovertebral angle, proprioception, balance, and foot pressure on forward head posture of female students

PurposeThe presence of spinal arches is crucial for maintaining good body posture, reducing pressure on joints, and preventing deformities caused by misalignment. Engaging in exercises that focus on correcting body alignment, such as walking backward, can enhance posture and various related factors. MethodA group of 46 female students suffering from forward head posture was selected (age: 22.89 ± 2.31 years, height: 1.63 ± 0.05 m, weight: 60.01 ± 5.41 kg, body mass index: 22.38 ± 1.28 kg/m2) and randomly divided into two groups. The intervention group participated in three exercise sessions per week for four weeks, while the control group did not receive any intervention during the study. Changes in the craniovertebral angle, proprioception, resistance, and foot pressure were measured using photogrammetry, head-neck angle examination with a laser pointer, a balance measuring device, and a foot scanner. FindingsThe results of this study showed that the training program had a significant effect on the craniovertebral angle (P = 0.001), neck proprioception (P = 0.001), balance (P = 0.001), and sole pressure (P = 0.001). Likewise, the results of the group comparison revealed significant differences in various variables, such as the craniovertebral angle (P = 0.001), neck proprioception (P = 0.001), balance (P = 0.001), and plantar pressure (P ≥ 0.05). ConclusionThis study demonstrated that walking backward enhanced the craniovertebral angle, proprioception, balance, and alterations in the plantar center of pressure. Therefore, this exercise is recommended as a complementary therapeutic approach for individuals with forward head posture.

Effects of forward head posture on the centre of pressure sway during dual-task balancing with smartphone engagement

PurposeForward head posture (FHP) may affect postural stability and balance. This study examines how smartphone texting while balancing, as a dual task, influences the body’s centre of pressure (CoP) during single-leg standing in individuals with FHP compared to those with normal posture.MethodsThe study utilized a randomized repeated measures design to assess single-leg standing balance and CoP across six conditions. Fifty participants, divided into two groups (25 with FHP and 25 with normal posture), underwent testing sequences involving non-smartphone usage (NU; single task), one-handed smartphone usage (1H; dual task), and two-handed smartphone usage (2H; dual task) on both soft and hard surfaces.ResultsThe study found that individuals with FHP showed increased CoP sway compared to those with normal posture across all conditions. Both 1H and 2H increased sway compared to non-usage for both groups, with a notable difference in FHP individuals on soft surfaces, where 2H led to greater sway.ConclusionsIndividuals with FHP are at a higher risk of balance issues during both NU and smartphone use, particularly during 2H. These results highlight the importance of addressing the impact of FHP on balance control and implementing interventions to reduce associated risks.

Effects of Postural Corrective Exercise Combined with Extracorporeal Shockwave Therapy on Muscle Activity, Neck Function and Pain in Adults with Forward Head Posture

Effects of Postural Corrective Exercise Combined with Extracorporeal Shockwave Therapy on Muscle Activity, Neck Function and Pain in Adults with Forward Head Posture

Electromyographic comparison of exercises for scapulothoracic muscle activation in men with upper crossed syndrome: A cross-sectional study

ObjectiveThis study aimed to determine the optimal exercise for improving Upper Crossed Syndrome (UCS) using electromyographic (EMG) activity of upper trapezius (UT), middle trapezius (MT), lower trapezius (LT), and serratus anterior (SA) during ten exercises. MethodA cross-sectional study involved 30 male students (mean age: 25.3 ± 2.5 years; height: 176.8 ± 7.2 cm; weight: 77.7 ± 2.5 kg; BMI: 23.8 ± 0.72 kg/m2) with UCS. Participants were selected based on postural assessments (forward head posture ≥44°, rounded shoulder ≥49°, thoracic kyphosis ≥42°). EMG was used to measure activation levels of UT, MT, LT, and SA, and the UT activation ratio relative to MT, LT, and SA during ten exercises. One-way ANOVA was applied for data analysis. ResultsSide-lying external rotation, standing diagonal flexion with Thera-band, and lying prone “V” demonstrated the least UT activity, with the highest MT and LT activation. The standing diagonal flexion with Thera-band elicited the highest SA activity. UT/MT, UT/LT, and UT/SA ratios were less than one in multiple exercises. Significant differences in muscle activation levels and ratios were observed across all exercises (P ≤ 0.05). ConclusionThe findings suggest significant clinical implications for UCS rehabilitation. The identified exercises effectively engage MT and LT while minimizing UT activation, addressing muscular imbalances. Favorable UT/MT, UT/LT, and UT/SA ratios further support these exercises in correcting UCS. These exercises may help counteract the underlying muscular imbalance in UCS by promoting a more balanced activity ratio among the shoulder girdle muscles, potentially improving posture and reducing UCS symptoms.

Correlation between Cranio-Vertebral Angle and Muscle Activity According to Body Movements in Forward Head Posture

The purpose of this study is to determine the correlation between FHP and how it may affect muscle activity during raising the arm and loss of body balance, 40 young people participated. All subjects will have their cranio-vertebral angle (CVA) and muscle activity of the serratus anterior (SA), upper trapezius (UT), and lower trapezius (LT), static balance index, and central pressure excursion index (CPEI) measured. Muscle activity was measured using TeleMyo 2400(Noraxon U.S.A., Inc., Scottsdale, AZ, USA), and static balance indicators and CPEI were measured using the MatscanVersaTek system (Tekscan Inc., MA). Spearman correlation analysis was used to determine the correlation between variables. CVA and SA, UT, and LT all showed significant correlation, positive correlation with SA(r=0.429/p=0.006) and LT(r=0.377/p=0.017), and negative correlation with UT(r=-0.473/p=0.007) (Table 2). CVA showed a moderate level of negative correlation with AREA(r=0.-0.420 /p=0.007) and L-R distance(r=-0.508 /p=0.000) among balance indicators, and did not show a significant correlation with CPEI (Table 3). In people with more severe FHP, SA, and LT muscle activity tended to be lower, UT muscle activity tended to be higher, and static balance ability was lower. According to the results of this study, FHP can have a negative effect on various factors of the body, such as arm movement and static balance, suggesting that establishing correct posture is necessary to prevent secondary physical problems.

Comparative Effects of Gaze Stabilization Exercises and Cawthorne-Cooksey Exercises on Craniovertebral Angle and Vestibulo-Ocular Reflex in IT Students

Background: Vestibular dysfunction affects balance and spatial orientation, leading to symptoms like dizziness and impaired gaze stability. Forward head posture (FHP) is common among IT students due to prolonged screen time, exacerbating vestibular and postural issues.Objective: To compare the effects of Gaze Stabilization Exercises (GSE) and Cawthorne-Cooksey Exercises (CCE) on craniovertebral angle (CVA) and vestibulo-ocular reflex (VOR) among IT students.Methods: A single-blinded randomized clinical trial was conducted on 50 IT students aged 19-25 years with FHP. Participants were randomly assigned to GSE (n=25) or CCE (n=25) groups. Interventions were performed thrice weekly for 3 weeks. CVA and VOR were assessed pre- and post-intervention using a goniometer and clinical scale, respectively. Data were analyzed using SPSS version 27 with Wilcoxon signed-rank and Mann-Whitney U tests.Results: Post-intervention, Group B (CCE) showed a significant increase in CVA (mean rank 26.80, U = 280.000, p = 0.527). Group A (GSE) demonstrated a significant reduction in VOR (mean rank 30.80, U = 180.00, p = 0.003).Conclusion: GSE effectively improved VOR, while CCE significantly enhanced CVA, indicating the potential for targeted rehabilitation in addressing vestibular and postural dysfunctions.

Global postural re-education versus Egoscue exercises in upper cross syndrome on neck pain, forward head and rounded shoulder posture: a randomised clinical trial

Abstract Upper crossed syndrome (UCS) is a condition that is caused due to alternating tightness and weakness in the opposite muscle groups of the neck, shoulders, and upper back which results in abnormal postural deviations. Global postural re-education (GPR) and Egoscue exercises (EE) aim to improve postural alignment and reduce musculoskeletal discomfort by maintaining certain postures. There is a lack of literature where these approaches are not compared and hence the need arises to evaluate their efficacy in the management of UCS. A randomised clinical trial was conducted on 34 individuals with UCS, where 17 individuals were randomly allocated into two groups, i.e. Group A (GPR) and Group B (EE). Both groups received conventional therapy (hot moist pack and interferential current therapy) 3 times/week for 4 weeks. Outcome measures like craniovertebral angle (CVA), pectoralis minor index (PMI), tragus to wall test (TTW), deep cervical flexors endurance, neck disability index (NDI), and patient satisfaction were assessed at baseline and on day 12 post-treatment. Within group analysis has shown statistical significant improvement in all the outcomes (). Between group analysis has shown both interventions to be equally effective in CVA (), PMI (), TTW (), deep cervical flexors endurance (), NDI () and patient satisfaction scale (PSS) () in individuals with UCS. In conclusion, both the interventions were equally effective and can be included in the protocol for the better outcomes in musculoskeletal dysfunctions. This present trial was prospectively registered in the Clinical Trial Registry of India with registration number CTRI/2023/10/059361.

Pilates mat versus cervical stabilization exercises on the craniovertebral angle, pain, function, and myoelectrical activity of the cervical muscles in forward head posture: a randomized controlled trial

IntroductionOne of the most prevalent postural problems involving the neck is called forward head posture (FHP), which is defined as the anterior head protruding from the sagittal plane and appearing to be positioned in front of the body. The incidence of FHP is 70% in young adults. This study aimed to compare Pilates mat versus cervical stabilization exercises on the craniovertebral angle (CVA), pain, function, and myoelectric activity of the upper trapezius (UT) and sternocleidomastoid (SCM) muscles in patients with FHP. Also, both experimental groups were compared to the control group in terms of CVA, pain, function, and myoelectric activity of the UT and SCM muscles.MethodsSixty participants (18 to 25 years old) with symptomatic FHP were randomly assigned to three groups using an opaque sealed envelope; Pilates mat and postural correction exercises were assigned group A, cervical stabilization and postural correction exercises were assigned group B, and solely postural correction exercises were assigned group C for 12 weeks at a frequency of 3 times/week. The patients were assessed before and after 12 weeks of interventions. The photogrammetric method was used to determine CVA, the visual analog scale (VAS) for pain intensity, the Arabic neck disability index (ANDI ) for neck function, and surface electromyography (sEMG) for the UT and SCM muscle root mean square during rest and activity.ResultsMultiple pairwise comparisons revealed statistically significant differences between pre and post-treatments for all variables in the Pilates, cervical stabilization, and control groups with a &lt;i&gt;p&lt;/i&gt; &lt; 0.05. Between groups, analyses showed that there were statistically significant differences (&lt;i&gt;p&lt;/i&gt; &lt; 0.05) at post-treatment between the Pilates and cervical stabilization groups and also between Pilates and the control, and finally between the cervical stabilization and control groups with more favor to the Pilates group.ConclusionsPilates mat and cervical stabilization exercises are both effective interventions for FHP, with Pilates mat exercises being superior.

Comparing the effects of neck stabilization exercises versus dynamic exercises among patients having nonspecific neck pain with forward head posture: a randomized clinical trial

BackgroundNonspecific neck pain (NSNP) is a well-established global burden affecting. It is also a common problem in Pakistan. The burden of neck pain is also increasing day by day due to poor work ergonomics, and increased use of computers and mobiles after the pandemic. An individual’s poor posture is often associated with forward head posture (FHP). Limited evidence is available about the effects of neck stabilization (NSE) and dynamic exercises (NDE) for nonspecific neck pain particularly in patients with FHP. This aimed to compare the effects of NSE versus NDE among patients having NSNP with FHP in reducing pain, disability, forward head posture and improving neck range of motion.MethodsIt is a single-blinded randomized clinical trial with 60 patients aged 18–40 years, with moderate intensity NSNP for > 3 weeks and < 6 months along with FHP with a moderate disability on neck disability index (NDI) randomly assigned to the treatment groups. Group 1 was doing NSE and group 2 was doing NDE. Transcutaneous Electical Nerve Stimulation, cold packs, and stretching exercises were given to both groups. A total of 9 sessions (3 sessions/ week) were given to participants. NDI questionnaire, Visual analogue scale (VAS), goniometry, and plumb line measurement tool were used as baseline and assessment at the end of 3rd week. The data was analyzed on SPSS version 21. Descriptive analysis was performed. Independent t-test was used for between group comparison and paired t-test used for within group comparison. A p-value less than 0.05 was considered statistically significant.ResultsAfter treatment within-group analysis of both NSE and NDE showed significant (p < 0.001) improvement in pain on VAS, all ROMs of the neck including flexion, extension, left and right lateral flexion and left rotation, plumb line and NDI score with very large effect size. However, between-group analysis showed non-significant differences (p > 0.05) for post-treatment mean VAS, neck ROM, NDI and plumb line measurement.ConclusionBetween NSE and NDE, no one is more beneficial than another. Both are equally effective in alleviating pain, increasing ROM, decreasing functional disability, and improving forward head posture in patients with NSNP.Trial RegistrationRegistered trial at ClinicalTrials.gov Identifier: NCT05298631, 28/03/2022, prospectively registered.

Proprioceptive neuromuscular facilitation stretching exercises for treatment of temporomandibular dysfunction in patients with forward head posture: A double-blinded, randomized, controlled trial.

Proprioceptive neuromuscular facilitation (PNF) stretching exercises have been widely advocated for the management of patients with different musculoskeletal conditions. However, its effect on the treatment of temporomandibular dysfunction (TMD) in patients with forward head posture (FHP) has not been fully investigated. To investigate the effect of PNF stretching exercises on the treatment of TMD in patients with FHP. A prospective, randomized, double-blinded clinical trial. Twenty-four patients with TMD and FHP aged from 18-40 years were randomly assigned to PNF or control group. The PNF group composed of 12 patients received PNF stretching exercises of masticatory muscles in addition to routine physical therapy treatment (FHP correction exercises and ultrasound for the temporomandibular joint); the control group composed of 12 patients received routine physical therapy treatment only. Interventions were conducted twice a week for six weeks. Craniovertebral angle, pain threshold, pain intensity, temporomandibular joint ROM, and temporomandibular joint function were assessed for all participants before and after the intervention. The outcomes were analyzed using Two-way mixed MANOVA. For further multiple comparisons, post-hoc tests with the Bonferroni correction were performed. There was no significant difference between both groups pre-treatment (p> 0.05). Comparison between groups post-treatment revealed statistically significant differences in all outcome measures (p< 0.05) in favor of the PNF group. Adding PNF stretching exercises of masticatory muscles to routine physical therapy programs is an effective method for management of TMD in patients with FHP more than routine physical therapy programs alone.

Analysis of Head Movement in KPSIT Dummies and the Impact of Seats and Seat Belts during Low-Speed Collisions 20 km/h.

The aim of this study was to compare the head displacement of the KPSIT C50 dummy, representing a 50th percentile male, with the KPSIT C5 dummy, representing a 5th percentile female, during low-speed collisions. Low-speed collisions, such as those occurring in urban traffic jams, are increasingly common. The research was conducted on a dedicated educational workstation designed to measure forces in seat belts. This study is part of a comprehensive research project on crash tests involving both volunteers and physical KPSIT dummies. The tests were conducted at a speed of 20 km/h to simulate real-world low-speed collision scenarios. The findings demonstrate that using a sports bucket seat with four-point or five-point harnesses significantly reduces head displacement compared with standard car seats. Such seating configurations enhance safety by minimizing the risk of head injuries, which can occur when airbags do not deploy during low-speed collisions. Moreover, the study highlights that standard three-point seat belts allow for greater forward head movement, increasing the risk of head contact with the vehicle's interior during collisions at speeds too low to trigger airbag deployment.

Causes, effects and treatment of forward head posture. Systematic literature review

The human cervical spine, with its complex structure, is designed to serve unique biomechanical functions. In addition to providing support and protection for the skull, the cervical spine also acts as a shock absorber for brain structures. Mechanically, it transfers weight and facilitates head flexion movements. To effectively carry out its function, proper alignment of the head’s posture with the body’s vertical center of gravity is necessary to minimize pressure and tension on spinal muscles. When continuous activities involving head restraint or forward bending cause an anterior translation of the head over extended periods of time, it can lead to a condition known as forward head posture (FHP). Prolonged FHP can result in injuries to muscles, tendons, and ligaments within both the cervical and lumbar regions of the spine, resulting in various health issues such as neck pain, shoulder pain or discomfort in the upper thoracic scapular segment. The aim of this study was to determine the impact, causes, and management strategies that can be implemented when forward posture occurs in individuals. The data used for this research were obtained from accredited journals such as Mendeley and PubMed. Articles were searched based on keywords related to forward head posture and then filtered according to inclusion and exclusion criteria. Ten out of 140 articles were selected as primary sources for this study. The results indicate that one significant impact of forward head posture is acute neck pain, which primarily affects an individual’s balance negatively. Known causes of forward head posture include engaging in work that involves repetitive bending or maintaining a static position where one leans their neck forwards continuously over prolonged periods. Finally, the recommended management approach when dealing with forward head posture is treatment through exercise therapy, such as Chin tuck exercise, McKenzie Neck Exercise, and Forward Head Posture Exercise.