Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture
Background: Forward head posture (FHP) is common postural malalignment. FHP is described relatively extension to upper cervical and lower cervical is relatively flexion. Although several researchers mentioned the lower cervical flexion posture in FHP, most of the studies related to FHP is focused...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Korean Research Society of Physical Therapy
2020-11-01
|
| Series: | Physical Therapy Korea |
| Subjects: |
| _version_ | 1797221906628214784 |
|---|---|
| author | Ji-yeon Eun Oh-yun Kwon Ui-jae Hwang Sung-hoon Jung Sun-hee Ahn |
| author_facet | Ji-yeon Eun Oh-yun Kwon Ui-jae Hwang Sung-hoon Jung Sun-hee Ahn |
| author_sort | Ji-yeon Eun |
| collection | DOAJ |
| description | Background: Forward head posture (FHP) is common postural malalignment. FHP is described
relatively extension to upper cervical and lower cervical is relatively flexion. Although
several researchers mentioned the lower cervical flexion posture in FHP, most of the studies
related to FHP is focused on the deep cervical flexor function.
Objects: The purposes of present study is to compare the cervical strength (upper cervical
extension [UCE], lower cervical extension [LCE], upper cervical flexion [UCF], lower cervical
flexion [LCF]) between individuals with and without FHP.
Methods: Fifty-one participants are recruited. Participants who have the craniovertebral
angle (CVA) less than 48 degree were classified to the FHP group (n = 24) and the others
were included in without FHP group (n = 27). The cervical strength (UCE, LCE, UCF, LCF) were
measured using Smart KEMA strength sensor and the strength data was normalized by body
weight. All strength measurement conducted at head and neck neutral position in sitting.
Independent t-test was used to compare the cervical strength between individuals with and
without FHP.
Results: The mean value of CVA was greater in without FHP group than with FHP group (p
< 0.000). The strength value of UCF (p < 0.002) and LCE (p < 0.001) was significant less in
FHP group than without FHP group. But no significant differences were seen in the LCF and
UCE strength between two groups.
Conclusion: UCF and LCE weakness in FHP group should be considered to evaluate and
manage the individuals with FHP. |
| first_indexed | 2024-04-24T13:12:53Z |
| format | Article |
| id | doaj.art-7b938486b3984c7ea13014fbf030942c |
| institution | Directory Open Access Journal |
| issn | 1225-8962 2287-982X |
| language | English |
| last_indexed | 2024-04-24T13:12:53Z |
| publishDate | 2020-11-01 |
| publisher | Korean Research Society of Physical Therapy |
| record_format | Article |
| series | Physical Therapy Korea |
| spelling | doaj.art-7b938486b3984c7ea13014fbf030942c2024-04-05T03:07:41ZengKorean Research Society of Physical TherapyPhysical Therapy Korea1225-89622287-982X2020-11-0127427227710.12674/ptk.2020.27.4.272Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head PostureJi-yeon Eun0https://orcid.org/0000-0002-4146-7534Oh-yun Kwon1https://orcid.org/0000-0002-9699-768XUi-jae Hwang2https://orcid.org/0000-0002-2050-5503Sung-hoon Jung3https://orcid.org/0000-0002-3704-1514Sun-hee Ahn4https://orcid.org/0000-0001-7660-8598Department of Physical Therapy, Graduate School, Yonsei University, Wonju, KoreaDepartment of Physical Therapy, College of Health Science, Laboratory of Kinetic Ergocise Based on Movement Analysis, Yonsei University, Wonju, KoreaDepartment of Physical Therapy, Graduate School, Yonsei University, Wonju, KoreaDepartment of Physical Therapy, Graduate School, Yonsei University, Wonju, KoreaDepartment of Physical Therapy, Graduate School, Yonsei University, Wonju, KoreaBackground: Forward head posture (FHP) is common postural malalignment. FHP is described relatively extension to upper cervical and lower cervical is relatively flexion. Although several researchers mentioned the lower cervical flexion posture in FHP, most of the studies related to FHP is focused on the deep cervical flexor function. Objects: The purposes of present study is to compare the cervical strength (upper cervical extension [UCE], lower cervical extension [LCE], upper cervical flexion [UCF], lower cervical flexion [LCF]) between individuals with and without FHP. Methods: Fifty-one participants are recruited. Participants who have the craniovertebral angle (CVA) less than 48 degree were classified to the FHP group (n = 24) and the others were included in without FHP group (n = 27). The cervical strength (UCE, LCE, UCF, LCF) were measured using Smart KEMA strength sensor and the strength data was normalized by body weight. All strength measurement conducted at head and neck neutral position in sitting. Independent t-test was used to compare the cervical strength between individuals with and without FHP. Results: The mean value of CVA was greater in without FHP group than with FHP group (p < 0.000). The strength value of UCF (p < 0.002) and LCE (p < 0.001) was significant less in FHP group than without FHP group. But no significant differences were seen in the LCF and UCE strength between two groups. Conclusion: UCF and LCE weakness in FHP group should be considered to evaluate and manage the individuals with FHP.headneckposture |
| spellingShingle | Ji-yeon Eun Oh-yun Kwon Ui-jae Hwang Sung-hoon Jung Sun-hee Ahn Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture Physical Therapy Korea head neck posture |
| title | Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture |
| title_full | Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture |
| title_fullStr | Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture |
| title_full_unstemmed | Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture |
| title_short | Comparison of Upper and Lower Cervical Muscle Strengths Between Subjects With and Without Forward Head Posture |
| title_sort | comparison of upper and lower cervical muscle strengths between subjects with and without forward head posture |
| topic | head neck posture |
| work_keys_str_mv | AT jiyeoneun comparisonofupperandlowercervicalmusclestrengthsbetweensubjectswithandwithoutforwardheadposture AT ohyunkwon comparisonofupperandlowercervicalmusclestrengthsbetweensubjectswithandwithoutforwardheadposture AT uijaehwang comparisonofupperandlowercervicalmusclestrengthsbetweensubjectswithandwithoutforwardheadposture AT sunghoonjung comparisonofupperandlowercervicalmusclestrengthsbetweensubjectswithandwithoutforwardheadposture AT sunheeahn comparisonofupperandlowercervicalmusclestrengthsbetweensubjectswithandwithoutforwardheadposture |