Dual-Task Postural Stability in Women With Premstrual Syndrome: A Within-Subject Comparative Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Static Overall Stability Index (OSI)
研究概览
简要总结
This within-subject repeated-measures study investigated dual-task postural stability in women with premenstrual syndrome (PMS) by comparing performance during the PMS and non-PMS phases of the menstrual cycle. The study also examined the relationship between PMS symptom severity and dual-task postural stability.
详细描述
Among women of reproductive age, premenstrual syndrome (PMS) is a common condition. Recent evidence indicates that approximately 20-30% of women experience PMS, highlighting its substantial global impact and confirming that a considerable proportion of women are affected by clinically relevant symptoms [1,2]. Estimates suggest that about half of women experience PMS. Fatigue, discomfort, impatience, and trouble concentrating are among the physical, emotional, and cognitive symptoms of PMS that can significantly interfere with day-to-day functioning [3, 4]. In addition to these well-known consequences that may affect balance and postural control, an increasing amount of evidence suggests that PMS may also affect neuromuscular systems and cognitive function [5].
40 women with regular menstrual cycles and premenstrual symptoms were enrolled. Participants were assessed during the PMS phase, identified 5-7 days before menstruation, and the non-PMS follicular phase (days 7-10). PMS symptom severity was assessed using the 40-item Premenstrual Syndrome Scale (PMSS).
Dual-task postural performance was assessed using the Biodex Balance System during static and dynamic conditions. Participants stood barefoot without holding the handrails while performing forward and reverse spelling tasks. Three 30-second trials were performed at Biodex stability levels 6-8, with adequate rest between trials.
Primary outcomes included static and dynamic OSI, APSI, and MLSI, while PMS severity was the secondary outcome. Paired *t*-tests and Cohen's *d* were used to compare the two phases, and Pearson's correlation assessed the relationship between PMS severity and postural stability.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 27 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Regular menstrual cycles (19-25 days).
- •Presence of premenstrual symptoms identified through menstrual cycle tracking and self-reported symptom reporting.
- •No use of hormonal contraceptives.
- •No history of neurological, musculoskeletal, vestibular, or cognitive disorders.
排除标准
- •Lower-limb injury within the previous six months.
- •Diagnosed psychiatric or neurological conditions.
- •Use of medications affecting balance or cognitive performance.
- •Presence of dysmenorrhea symptoms.
研究组 & 干预措施
PMS Group
A single group of 40 female participants (18-27 years) with regular menstrual cycles and PMS symptoms, each evaluated under two within-subject conditions.
干预措施: PMS Group (Other)
结局指标
主要结局
Static Overall Stability Index (OSI)
时间窗: Assessed during the PMS phase (5-7 days before menstruation) and the non-PMS (follicular) phase (days 7-10). A within-subject comparison is made.
Measured using the Biodex Balance System during static dual-task testing (standing while performing a concurrent spelling task), comparing non-PMS vs. PMS phase.
Static Medial-Lateral Stability Index (MLSI)
时间窗: Assessed during the PMS phase (5-7 days before menstruation) and the non-PMS follicular phase (days 7-10). Within-subject comparison between the two phases.
Measured using the Biodex Balance System during static dual-task testing (standing while performing a concurrent spelling task). The MLSI represents postural sway in the mediolateral direction during quiet standing. Unit of measurment: Units on a Scale (Biodex Stability Index)
Static Anterior-Posterior Stability Index (APSI)
时间窗: Assessed during the PMS phase (5-7 days before menstruation) and the non-PMS follicular phase (days 7-10). Within-subject comparison between the two phases.
Measured using the Biodex Balance System during static dual-task testing (standing while performing a concurrent spelling task). The APSI represents postural sway in the anterior-posterior direction during quiet standing.
Dynamic Overall Stability Index (OSI)
时间窗: Assessed during the PMS phase (5-7 days before menstruation) and the non-PMS follicular phase (days 7-10). Within-subject comparison between the two phases.
Measured using the Biodex Balance System during dynamic dual-task testing (standing on an unstable platform while performing a concurrent spelling task). The OSI represents overall postural sway and balance control during dynamic conditions.
Dynamic Medial-Lateral Stability Index (MLSI)
时间窗: Assessed during the PMS phase (5-7 days before menstruation) and the non-PMS follicular phase (days 7-10). Within-subject comparison between the two phases.
Measured using the Biodex Balance System during dynamic dual-task testing (standing on an unstable platform while performing a concurrent spelling task). The MLSI represents postural sway in the mediolateral direction during dynamic conditions.
Dynamic Anterior-Posterior Stability Index (APSI)
时间窗: Assessed during the PMS phase (5-7 days before menstruation) and the non-PMS follicular phase (days 7-10). Within-subject comparison between the two phases.
Measured using the Biodex Balance System during dynamic dual-task testing (standing on an unstable platform while performing a concurrent spelling task). The APSI represents postural sway in the anterior-posterior direction during dynamic conditions.
次要结局
- Premenstrual Syndrome (PMS) Symptom Severity(Administered during both the non-PMS (follicular) phase (days 7-10) and the PMS phase (5-7 days before menstruation).)