Acute Responses of Postural Alignment, Kinematic Synergy, and Intermuscular Coherence to Postural Muscle Facilitation (Retrospective)
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- Euclidean distance from the vector describing subject-specific, simulated gravitational collapse
研究概览
简要总结
Postural alignment is often intervened upon in health, fitness, and physical medicine settings. Despite a long tradition in this area, current notions of optimal or normal posture are superficial and often logically inconsistent. A recent attempt to reconcile diverging opinions about good posture proposes that alignment be considered in relation to individual joints' natural tendencies to collapse under gravity. This theory allows different maladaptive postures to be described in terms of functional deficits and compensatory adaptations at the muscular level. Working within this type of theory, postural interventions may be able to account for comparative advantages in maintaining alignment between different muscle systems. This would represent a step forward from current practices, which usually attempt to force arbitrary alignment patterns indiscriminately.
The current study presents motion capture and electromyography (EMG) data evaluating the effects of two interventions on individual participants' bipedal standing alignment patterns with respect to the gravitational collapsing tendencies referenced above. Additional outcomes included functional grouping of muscle activation signals (via intermuscular coherence) and kinetic chain continuity. The interventions include 1) an experimental intervention purported to engage muscles that naturally resist the collapsing effects of gravity, and 2) a control intervention designed to inhibit other muscle groups that are sometimes involved in maintaining bipedal alignment in a compensatory role. Study outcomes are measured before and after both interventions to quantify the acute effects of each. All participants complete both interventions in random order, crossing over after a one-week washout period. This research will provide insight into the acute effects of studied interventions, specifically those relating to maintenance of bipedal alignment with respect to gravitational collapsing tendencies.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Healthy adult
- •18 - 40 years of age
排除标准
- •Recent (< 6 months) history of lower extremity injury
- •Recent (< 6 months) history of other musculoskeletal or neurological disorder affecting balance
- •Contraindications to participation in physical activity
研究组 & 干预措施
Exercise Then Foam Roll
This arm (sequence) will first complete the exercise intervention promoting muscular engagement resisting gravitational collapsing tendencies, then the control intervention involving self-myofascial release of muscle groups not thought to resist gravitational collapse.
干预措施: Exercise Then Foam Roll (Other)
Foam Roll Then Exercise
This arm (sequence) will first complete the control intervention involving self-myofascial release of muscle groups not thought to resist gravitational collapse, then the exercise intervention promoting muscular engagement resisting gravitational collapsing tendencies.
干预措施: Foam Roll Then Exercise (Other)
结局指标
主要结局
Euclidean distance from the vector describing subject-specific, simulated gravitational collapse
时间窗: Immediately after Intervention (Day 7)
This outcome is a cumulative descriptor of segment angle distance from the pattern in which an individual's posture would collapse. The reference point for each individual is calculated using both pre and post-intervention data for a given day.
Pooled intermuscular coherence
时间窗: Immediately after Intervention (Day 7)
Weighted average of frequency-domain correlations between muscle pairs belonging to anterior, posterior, and trunk muscle groups.
Euclidean distance from the vector describing subject-specific, simulated gravitational collapse
时间窗: Immediately before Intervention (Day 1)
This outcome is a cumulative descriptor of segment angle distance from the pattern in which an individual's posture would collapse. The reference point for each individual is calculated using both pre and post-intervention data for a given day.
Euclidean distance from the vector describing subject-specific, simulated gravitational collapse
时间窗: Immediately after Intervention (Day 1)
This outcome is a cumulative descriptor of segment angle distance from the pattern in which an individual's posture would collapse. The reference point for each individual is calculated using both pre and post-intervention data for a given day.
Euclidean distance from the vector describing subject-specific, simulated gravitational collapse
时间窗: Immediately before Intervention (Day 7)
This outcome is a cumulative descriptor of segment angle distance from the pattern in which an individual's posture would collapse. The reference point for each individual is calculated using both pre and post-intervention data for a given day.
Pooled intermuscular coherence
时间窗: Immediately before Intervention (Day 1)
Weighted average of frequency-domain correlations between muscle pairs belonging to anterior, posterior, and trunk muscle groups.
Pooled intermuscular coherence
时间窗: Immediately after Intervention (Day 1)
Weighted average of frequency-domain correlations between muscle pairs belonging to anterior, posterior, and trunk muscle groups.
Pooled intermuscular coherence
时间窗: Immediately before Intervention (Day 7)
Weighted average of frequency-domain correlations between muscle pairs belonging to anterior, posterior, and trunk muscle groups.
次要结局
- Top-down kinetic chain continuity(Immediately after Intervention (Day 7))
- Top-down kinetic chain continuity(Immediately before Intervention (Day 1))
- Top-down kinetic chain continuity(Immediately after Intervention (Day 1))
- Top-down kinetic chain continuity(Immediately before Intervention (Day 7))
研究者
Stephen Glass
Assistant Professor
Radford University