TY - JOUR
T1 - Center of pressure characteristics differ during single leg stance throughout pregnancy and compared to nulligravida individuals
AU - Bagwell, Jennifer J.
AU - Reynolds, Nicholas
AU - Katsavelis, Dimitrios
AU - Lam, Kristina
AU - Walaszek, Michelle
AU - Runez, Hannah
AU - Kyvelidou, Anastasia
N1 - Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Jennifer J Bagwell reports financial support was provided by Academy of Orthopeadic Physical Therapy. Jennifer J Bagwell reports financial support was provided by Creighton University.
Funding Information:
Funding: This work was supported by the American Physical Therapy Association Academy of Orthopaedic Section [grant number 212069–713131]; and the Creighton University Health Sciences Strategic Investment Fund Faculty Development Grant [grant number 201008–713131]. Study sponsors did not influence study design or interpretation.
Funding Information:
This work was supported by the American Physical Therapy Association Academy of Orthopaedic Physical Therapy [grant number 212069-713131 ]; and the Creighton University Health Sciences Strategic Investment Fund Faculty Development Grant [grant number 201008-713131 ].
Publisher Copyright:
© 2022 The Authors
PY - 2022/9
Y1 - 2022/9
N2 - Background: Falls are common during pregnancy and present potential for injury to the pregnant individual and the baby. Research question: Do center of pressure characteristics during single leg stance differ between participants during and after pregnancy and nulligravida participants in the presence and absence of visual input? Methods: Nineteen pregnant participants completed testing during the second trimester, the third trimester, and 4–6 months post-partum. Matched, nulligravida females completed testing once. All participants performed single leg stance on a force platform on each limb for up to 20 s with eyes open and with eyes closed. Center of pressure characteristics were compared between pregnant and nulligravida females using three separate 2 × 2 mixed way ANOVAs, one for each pregnancy time point (second trimester, third trimester, and post-partum) with Bonferroni correction. Results: Pregnant females demonstrated smaller single leg stance time with eyes closed during the third trimester. During the second and third trimester, pregnant participants demonstrated smaller sway and sway velocity across eyes open and eyes closed conditions. During the third trimester and post-partum, pregnant participants demonstrated greater median frequency of the center of pressure data. Pregnant participants also demonstrated smaller sample entropy in the anteroposterior direction during the second and third trimesters and in the mediolateral direction during the second trimester. Significance: The decreased total sway and sway velocity observed during pregnancy may reflect rigidity or a protective strategy during single limb stance. Additionally, center of pressure data were less smooth and more repetitive during pregnancy indicating robust differences in postural control strategies and potentially increased fall risk. Because single limb stance is a component of many activities of daily living, the single limb stance task may have clinical utility for testing or training balance in this population with a goal of decreasing falls.
AB - Background: Falls are common during pregnancy and present potential for injury to the pregnant individual and the baby. Research question: Do center of pressure characteristics during single leg stance differ between participants during and after pregnancy and nulligravida participants in the presence and absence of visual input? Methods: Nineteen pregnant participants completed testing during the second trimester, the third trimester, and 4–6 months post-partum. Matched, nulligravida females completed testing once. All participants performed single leg stance on a force platform on each limb for up to 20 s with eyes open and with eyes closed. Center of pressure characteristics were compared between pregnant and nulligravida females using three separate 2 × 2 mixed way ANOVAs, one for each pregnancy time point (second trimester, third trimester, and post-partum) with Bonferroni correction. Results: Pregnant females demonstrated smaller single leg stance time with eyes closed during the third trimester. During the second and third trimester, pregnant participants demonstrated smaller sway and sway velocity across eyes open and eyes closed conditions. During the third trimester and post-partum, pregnant participants demonstrated greater median frequency of the center of pressure data. Pregnant participants also demonstrated smaller sample entropy in the anteroposterior direction during the second and third trimesters and in the mediolateral direction during the second trimester. Significance: The decreased total sway and sway velocity observed during pregnancy may reflect rigidity or a protective strategy during single limb stance. Additionally, center of pressure data were less smooth and more repetitive during pregnancy indicating robust differences in postural control strategies and potentially increased fall risk. Because single limb stance is a component of many activities of daily living, the single limb stance task may have clinical utility for testing or training balance in this population with a goal of decreasing falls.
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U2 - 10.1016/j.gaitpost.2022.07.006
DO - 10.1016/j.gaitpost.2022.07.006
M3 - Article
AN - SCOPUS:85134639112
VL - 97
SP - 43
EP - 47
JO - Gait and Posture
JF - Gait and Posture
SN - 0966-6362
ER -