Expansive and Contractive Postures and Movement: A Systematic Review and Meta-Analysis of the Effect of Motor Displays on Affective and Behavioral Responses

Bodies in action: Do contractive and expansive postures facilitate adaptive behavior?

The present study investigated the effects of expansive and contractive body displays on adaptive behavior and affective outcomes. Addressing limitations in past research, the effects were investigated in two different contexts (i.e., fear context and sadness context), compared with two types of control conditions and the moderating effects of motivational traits and symptoms of psychopathology were accounted for. A sample of 186 adults completed a fear experiment involving a mock job interview and a sadness experiment involving sad mood induction. For each experiment, participants were randomly assigned to one of four body manipulations: (1) expansive; (2) contractive; (3) active control (i.e., running in place); or 4) passive control (i.e., doing nothing). The primary outcome was adaptive behavior (i.e., appropriate job-interview behavior and positive recall bias). Secondary affective outcomes were emotions, action tendencies, and appraisals. Results revealed small, non-significant effects of body displays on primary outcomes (ds = 0.19-0.28). For secondary outcomes, significant effects were identified for positive emotions (ds = 0.33). Across secondary outcomes, pairwise comparisons revealed that expansive displays led to more favorable outcomes than contractive displays. For participants with the highest levels of depression, body display conditions led to less favorable affective outcomes than control conditions. The results suggest that body displays do not influence adaptive behavior within the investigated contexts. When compared to contractive displays, expansive displays were found to yield more favorable affective changes. Lastly, the findings indicate that further investigations into body manipulations in the context of psychopathology are warranted.

[Embodiment - Connecting Body and Mind]

Body and mind are often considered as separate entities, also in medicine. However, new neuroscientific research indicates that body and mind are much more connected than previously thought. This scientific contribution will look at the importance of "embodiment" for medicine.

Exploring fascial properties in patients with depression and chronic neck pain: An observational study

BACKGROUND

Depressive disorder and chronic pain are prevalent conditions that often co-occur. The myofascial fascial continuum has been hypothesized to contribute to both conditions. However, limited research exists on the specific association between fascial properties and chronic pain and depression.

OBJECTIVE

This study aims to investigate the properties of the deep fascia of the M. trapezius and their relationship with depression, chronic neck pain, and cervical spine mobility.

METHOD

This study compared fascial properties between two groups: individuals with depression and chronic neck pain, and healthy individuals. Fascial thickness, elasticity, and stiffness were measured as primary outcomes using standardized techniques such as ultrasound imaging and compliance meter. Statistical analyses were conducted to identify potential differences and correlations in fascial properties between the two groups.

RESULT

Significant differences emerge in stiffness, tone, and fascia thickness in the deep fascia, alongside identified correlations between depression, chronic pain, and these variables.

CONCLUSION

The study highlights the impact of depression and chronic pain on fascial properties, emphasizing the need for further research in this domain to unravel the intricate connections and potential implications for treatment strategies.

Emotion in action: When emotions meet motor circuits

The brain is a remarkably complex organ responsible for a wide range of functions, including the modulation of emotional states and movement. Neuronal circuits are believed to play a crucial role in integrating sensory, cognitive, and emotional information to ultimately guide motor behavior. Over the years, numerous studies employing diverse techniques such as electrophysiology, imaging, and optogenetics have revealed a complex network of neural circuits involved in the regulation of emotional or motor processes. Emotions can exert a substantial influence on motor performance, encompassing both everyday activities and pathological conditions. The aim of this review is to explore how emotional states can shape movements by connecting the neural circuits for emotional processing to motor neural circuits. We first provide a comprehensive overview of the impact of different emotional states on motor control in humans and rodents. In line with behavioral studies, we set out to identify emotion-related structures capable of modulating motor output, behaviorally and anatomically. Neuronal circuits involved in emotional processing are extensively connected to the motor system. These circuits can drive emotional behavior, essential for survival, but can also continuously shape ongoing movement. In summary, the investigation of the intricate relationship between emotion and movement offers valuable insights into human behavior, including opportunities to enhance performance, and holds promise for improving mental and physical health. This review integrates findings from multiple scientific approaches, including anatomical tracing, circuit-based dissection, and behavioral studies, conducted in both animal and human subjects. By incorporating these different methodologies, we aim to present a comprehensive overview of the current understanding of the emotional modulation of movement in both physiological and pathological conditions.

Does neck flexion improve performance? Effects on reaction time depend on whether responses are expected

This research investigates the limitations of the apparent paradox in which neck flexion, which is associated with poor inhibition and neck pain, seems to facilitate performance in some tasks. We compared the effect of a flexed neck on performance in a reaction time and go-nogo task using a novel method of fixing neck posture. We hypothesize that using a flexed neck posture speeds response time for tasks with high prepotency (when participants are biased toward responding), but not for tasks with low prepotency (when participants are more likely to withhold a response). Previous findings demonstrated the effect of neck flexion on reaction time with a harness. In this study, participants complete both simple reaction time and go-nogo tasks with neck angles fixed in neutral or forward positions with tape. We found that simple reaction times were 10 ms faster in the forward neck position than in neutral; this facilitation was not seen in the go-nogo task. We conclude that using tape to induce a flexed neck posture facilitates reaction time during tasks that always require a response and does not affect reaction time on a task which may require withholding a response.

Using bodily displays to facilitating approach action outcomes within the context of a personally relevant task

BACKGROUND

Considerable attention has been paid to the effect of bodily (expansive and contractive) displays on affective, behavioral, and hormonal outcomes. However, the majority of past studies are limited by a lack of control groups with neutral displays and low personal relevance of the experimental tasks employed. The present study aimed to investigate the effect of adopting different bodily displays, including neutral displays, within the context of a personally relevant task.

METHODS

In an experiment with healthy participants (N = 90), we investigated the effects of two different bodily manipulations (i.e., expansive and contractive), compared to a control group (i.e., neutral displays). Effects were evaluated in terms of completed valued action in addition to processes considered potentially helpful in preparing and motivating the individual to take valued action, including a change in emotion experience, action tendencies, and appraisals.

RESULTS

Several main effects were detected and only few significant interaction effects were revealed. In case of group differences, results showed that expansive bodily displays outperformed the control group, leading to more positive emotions, more approach action tendencies, less negative emotion variability, and less avoidance action tendencies toward threat.

DISCUSSION

These results mainly suggest that identifying a valued action and explicating the underlying motivational conflict may be beneficial regardless of bodily displays. This conclusion runs somewhat counter both to our hypotheses and to findings in recent meta-analytic work. However, previous experiments have not evaluated the effect of bodily displays within a personally relevant context.

Bodily feedback: expansive and upward posture facilitates the experience of positive affect

Most emotion theories recognise the importance of the body in expressing and constructing emotions. Focusing beyond the face, the present research adds needed empirical data on the effect of static full body postures on positive/negative affect. In Studies 1 (N = 110) and 2 (N = 79), using a bodily feedback paradigm, we manipulated postures to test causal effects on affective and physiological responses to emotionally ambiguous music. Across both studies among U.S. participants, we find the strongest support for an effect of bodily postures that are expansive and oriented upward on positive affect. In addition, an expansive and upward pose also led to greater cardiac vagal reactivity but these changes in parasympathetic activity were not related to affective changes (Study 2). In line with embodied theories, these results provide additional support for the role of postural input in constructing affect. Discussion highlights the relevance of these findings for the study of religious practices during which the postures studied are often adopted.

Influence of Rolfing Structural Integration on Active Range of Motion: A Retrospective Cohort Study

Background: Recent work has investigated significant force transmission between the components of myofascial chains. Misalignments in the body due to fascial thickening and shortening can therefore lead to complex compensatory patterns. For the treatment of such nonlinear cause−effect pathology, comprehensive neuromusculoskeletal therapy such as the Rolf Method of Structural Integration (SI) could be targeted. Methods: A total of 727 subjects were retrospectively screened from the medical records of an SI practice over a 23-year period. A total of 383 subjects who had completed 10 basic SI sessions met eligibility criteria and were assessed for active range of motion (AROM) of the shoulder and hip before and after SI treatment. Results: Shoulder flexion, external and internal rotation, and hip flexion improved significantly (all p < 0.0001) after 10 SI sessions. Left shoulder flexion and external rotation of both shoulders increased more in men than in women (p < 0.0001) but were not affected by age. Conclusions: An SI intervention could produce multiple changes in the components of myofascial chains that could help maintain upright posture in humans and reduce inadequate compensatory patterns. SI may also affect differently the outcome of some AROM parameters in women and men.

'Touch for Health' based kinesiology interventions: An innovative qualitative research exploring clients' perspectives

BACKGROUND AND PURPOSE

Touch for health (TFH) based kinesiology is a complementary therapy with foundations in a natural health training developed utilising techniques from chiropractic, osteopathy and acupressure therapies. Although popular, the impact of the therapy is poorly understood. The aim of this study was to understand outcomes of TFH-based kinesiology interventions that clients perceive as important in their lives.

MATERIALS AND METHODS

A qualitative phenomenological approach was chosen to capture rich descriptive data. Thirteen individuals were recruited from TFH-based kinesiology practices. Focus groups included semi-structured questions, photo-elicitation and a wellness word activity to prompt discussion on impacts of interventions. Audio-recordings were transcribed, coded and grouped to develop themes. Comparisons were made and linked with the wellness model, theory of planned behaviour and mindfulness-based interventions.

RESULTS

Three interrelated themes emerged: impact on awareness, experience of effects and impact on action. TFH-based kinesiology was perceived to enhance self-awareness and feelings of wellbeing, promote self-care and support new actions to manage stress and complement conventional healthcare. The use of a mind-body approach with feedback from muscle testing and less need for dialogue were valued. Photo-elicitation generated rich narratives recounting experiences after interventions. Impacts aligned with the wellness model and resembled outcomes of mindfulness-based interventions.

CONCLUSION

This study provides an insight into experiences and impacts of TFH-based kinesiology. Interventions were seen to facilitate self-awareness, experiences of wellbeing and promote self-care. Findings contribute towards a knowledge-base to foster dialogue and inform TFH-based kinesiologists, health professionals, consumers and research of TFH-based kinesiology and comparative therapies.

Power-Posing Robots: The Influence of a Humanoid Robot’s Posture and Size on its Perceived Dominance, Competence, Eeriness, and Threat

When interacting with sophisticated digital technologies, people often fall back on the same interaction scripts they apply to the communication with other humans—especially if the technology in question provides strong anthropomorphic cues (e.g., a human-like embodiment). Accordingly, research indicates that observers tend to interpret the body language of social robots in the same way as they would with another human being. Backed by initial evidence, we assumed that a humanoid robot will be considered as more dominant and competent, but also as more eerie and threatening once it strikes a so-called power pose. Moreover, we pursued the research question whether these effects might be accentuated by the robot’s body size. To this end, the current study presented 204 participants with pictures of the robot NAO in different poses (expansive vs. constrictive), while also manipulating its height (child-sized vs. adult-sized). Our results show that NAO’s posture indeed exerted strong effects on perceptions of dominance and competence. Conversely, participants’ threat and eeriness ratings remained statistically independent of the robot’s depicted body language. Further, we found that the machine’s size did not affect any of the measured interpersonal perceptions in a notable way. The study findings are discussed considering limitations and future research directions.

Qigong Training Positively Impacts Both Posture and Mood in Breast Cancer Survivors With Persistent Post-surgical Pain: Support for an Embodied Cognition Paradigm

Theories of embodied cognition hypothesize interdependencies between psychological well-being and physical posture. The purpose of this study was to assess the feasibility of objectively measuring posture, and to explore the relationship between posture and affect and other patient centered outcomes in breast cancer survivors (BCS) with persistent postsurgical pain (PPSP) over a 12-week course of therapeutic Qigong mind-body training. Twenty-one BCS with PPSP attended group Qigong training. Clinical outcomes were pain, fatigue, self-esteem, anxiety, depression, stress and exercise self-efficacy. Posture outcomes were vertical spine and vertical head angles in the sagittal plane, measured with a 3D motion capture system in three conditions: eyes open (EO), eyes open relaxed (EOR) and eyes closed (EC). Assessments were made before and after the Qigong training. The association between categorical variables (angle and mood) was measured by Cramer's V. In the EO condition, most participants who improved in fatigue and anxiety scales also had better vertical head values. For the EOR condition, a moderate correlation was observed between changes in vertical head angle and changes in fatigue scale. In the EC condition, most of the participants who improved in measures of fatigue also improved vertical head angle. Additionally, pain severity decreased while vertical spine angle improved. These preliminary findings support that emotion and other patient centered outcomes should be considered within an embodied framework, and that Qigong may be a promising intervention for addressing biopsychosocially complex interventions such as PPSP in BCSs.

Myofascial Tissue and Depression

Background

The myofascial system plays a fundamental role in the mechanics of the body, in body tension regulation and the etiology of pathological states like chronic pain. Moreover, it contains contractile elements and preliminary evidence suggests that its properties are linked to psychological factors. The aim of the present research was to investigate characteristics of the myofascial tissue in patients with Major Depressive Disorder (MDD) and to examine whether the state of the myofascial tissue causally affects pathopsychological processes in MDD.

Methods

In Study 1, stiffness and elasticity of the myofascial tissue of 40 inpatients suffering from MDD measured with a tissue compliance meter were compared with those of 40 matched never-depressed participants. In Study 2, 69 MDD patients were randomly assigned to single-session self-myofascial release intervention (SMRI) or a placebo intervention. Effects on memory bias and affect were investigated.

Results

Results showed that MDD patients displayed heightened stiffness and reduced elasticity of the myofascial tissue and that patients in the SMRI group showed a reduced negative memory bias and more positive affect compared to patients in the placebo condition.

Conclusions

The preliminary results of our studies indicate that the myofascial tissue might be part of a dysfunctional body-mind dynamic that maintains MDD.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10608-021-10282-w.

Commentary on Elkjær et al.'s (2020) Meta-Analysis on Expansive Versus Contractive Nonverbal Displays

We offer a critical perspective on the meta-analysis by Elkjær et al. (2020) by pointing out three constraints: The first refers to open-science practices, the second addresses the selection of studies, and the third offers a broader theoretical perspective. We argue that preregistration and adherence to the highest standards of conducting meta-analyses is important. Further, we identified several missing studies. Regarding the theoretical perspective, we suggest that it may be useful to tie body positions into the dominance-prestige framework and, on that basis, to distinguish two types of body positions. Such an approach has the potential to account for discrepancies in previous meta-analytical evidence regarding the effects of expansive versus contractive nonverbal displays. Future research may thus be able to provide not only methodological but also theoretical innovations to the field of body positions.

Gait Patterns and Mood in Everyday Life: A Comparison Between Depressed Patients and Non-depressed Controls

Background

Previous laboratory findings suggest deviant gait characteristics in depressed individuals (i.e., reduced walking speed and vertical up-and-down movements, larger lateral swaying movements, slumped posture). However, since most studies to date assessed gait in the laboratory, it is largely an open question whether this association also holds in more naturalistic, everyday life settings. Thus, within the current study we (1) aimed at replicating these results in an everyday life and (2) investigated whether gait characteristics could predict change in current mood.

Methods

We recruited a sample of patients (n = 35) suffering from major depressive disorder and a sample of age and gender matched non-depressed controls (n = 36). During a 2-day assessment we continuously recorded gait patterns, general movement intensity and repetitively assessed the participant’s current mood.

Results

We replicated previous laboratory results and found that patients as compared to non-depressed controls showed reduced walking speed and reduced vertical up-and-down movements, as well as a slumped posture during everyday life episodes of walking. Moreover, independent of clinical diagnoses, higher walking speed, and more vertical up-and-down movements significantly predicted more subsequent positive mood, while changes in mood did not predict subsequent changes in gait patterns.

Conclusion

In sum, our results support expectations that embodiment (i.e., the relationship between bodily expression of emotion and emotion processing itself) in depression is also observable in naturalistic settings, and that depression is bodily manifested in the way people walk. The data further suggest that motor displays affect mood in everyday life.

Using bodily postures to reduce anxiety and improve interoception: A comparison between powerful and neutral poses

BACKGROUND

Previous research has shown that anxiety syndromes are highly prevalent among university students. Effective treatments are needed to reduce the burden of anxiety in this population. Powerful postures have been found to impact affective states, as well as interoception (i.e. the ability to perceive inner bodily signals). However, no previous study has compared the effects of powerful- and neutral postures in regards to anxiety and interoceptive ability.

METHODS

The first part of the study measured the single-session effect of adopting powerful- vs. neutral postures on students' (n = 57) interoceptive ability and state anxiety. The second part of the study measured the effect of adopting powerful or neutral postures twice daily for two weeks, on individuals' interoceptive ability and trait anxiety.

RESULTS

State anxiety decreased in both conditions whereas interoceptive accuracy only increased in the power posing condition after a single session. Interoceptive accuracy increased in both groups after two weeks of training.

LIMITATIONS

The study included no comparison to a condition where individuals adopted their natural (i.e. usual) bodily posture.

CONCLUSIONS

Embodiment interventions that include elements of adopting an open or expansive bodily posture whilst maintaining a self-focus, can help to reduce state anxiety and improve interoceptive accuracy in student populations. Power posing does not seem to be superior to holding a neutral posture to improve interoceptive accuracy or anxiety. One reason therefore could be that both conditions include the manipulation of self-focus and a postural change that diverges from individuals' normal posture.