Methodological considerations for the 3D measurement of the X-factor and lower trunk movement in golf

OBJECTIVE: This study investigated the differences in trunk sway during stair climbing between people with normal spinal alignment and people with flat-back syndrome. METHODS: Twelve male volunteers with flat-back syndrome (global angle < 20 degrees) and 12 male volunteers with normal spinal alignment (global angle between 20 degrees and 30 degrees) were enrolled. An accelerator was attached to the third lumbar spine and the sway of each participant’s trunk was measured during stair climbing. RESULT: Participants with flat-back syndrome showed significant differences in vector, anteroposterior sway, and vertical sway of the trunk during stair climbing (p< 0.05). However, mediolateral sway of the trunk and gait time did not significantly differ between groups (p> 0.05). CONCLUSION: Our findings can be used as baseline data for prevention of back pain. Furthermore, increased trunk sway can cause increased energy usage, leading to inefficient gait. Further research is needed to prevent this problem.

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Pruning Affects Tree Movement in Hurricane Force Wind

Arboriculture & Urban Forestry ◽

10.48044/jauf.2008.004 ◽

2008 ◽

Vol 34 (1) ◽

pp. 20-28

Author(s):

Edward Gilman ◽

Forrest Masters ◽

Jason Grabosky

Keyword(s):

Trunk Movement ◽

Tree Crowns ◽

Lower Trunk ◽

Wind Speeds ◽

Wind Generator ◽

Live Oak ◽

Straight Line ◽

Pruning Techniques

The goal of this study was to determine how different pruning techniques affect trunk movement on live oak subjected to hurricane force winds. Tree movement in wind on nonpruned trees was compared with movement on trees with crowns thinned, reduced, or raised. Twenty trees were blown using a wind generator up to 45 m/s (110 mph) maintained for 3 min. Each tree was instrumented with three orientation sensors at set heights along the trunk to measure its deflection. Thinning or reducing crowns significantly reduced upper trunk movement at all wind speeds, whereas raising did not. Lower trunk movement was not affected by pruning type. These data indicated that foliage and branches toward the top of tree crowns were largely responsible for trunk movement in straight-line wind with those toward the bottom less important. Trees that are reduced or thinned in the manner described could receive less damage in windstorms.

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Maternal Perception of Infants’ Expressions of Emotion

Journal of Psychophysiology ◽

10.1027/0269-8803/a000008 ◽

2010 ◽

Vol 24 (3) ◽

pp. 173-185 ◽

Cited By ~ 6

Author(s):

Martin Krippl ◽

Stephanie Ast-Scheitenberger ◽

Ina Bovenschen ◽

Gottfried Spangler

Keyword(s):

Response Pattern ◽

Electrodermal Activity ◽

Startle Amplitude ◽

Caregiving System ◽

Parental Caregiving ◽

Opponent Process ◽

Opponent Process Theory ◽

Valence And Arousal ◽

Methodological Considerations

In light of Lang’s differentiation of the aversive and the approach system – and assumptions stemming from attachment theory – this study investigates the role of the approach or caregiving system for processing infant emotional stimuli by comparing IAPS pictures, infant pictures, and videos. IAPS pictures, infant pictures, and infant videos of positive, neutral, or negative content were presented to 69 mothers, accompanied by randomized startle probes. The assessment of emotional responses included subjective ratings of valence and arousal, corrugator activity, the startle amplitude, and electrodermal activity. In line with Lang’s original conception, the typical startle response pattern was found for IAPS pictures, whereas no startle modulation was observed for infant pictures. Moreover, the startle amplitudes during negative video scenes depicting crying infants were reduced. The results are discussed with respect to several theoretical and methodological considerations, including Lang’s theory, emotion regulation, opponent process theory, and the parental caregiving system.

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Effectiveness of Programs for the Prevention of Child Sexual Abuse

European Psychologist ◽

10.1027/1016-9040/a000379 ◽

2020 ◽

Vol 25 (1) ◽

pp. 1-15 ◽

Cited By ~ 3

Author(s):

Amaia Del Campo ◽

Marisalva Fávero

Keyword(s):

United States ◽

Sexual Abuse ◽

New Zealand ◽

Critical Analysis ◽

Prevention Programs ◽

The United States ◽

Sexual Abuse Prevention ◽

Negative Effects ◽

The United Kingdom ◽

Methodological Considerations

Abstract. During the last decades, several studies have been conducted on the effectiveness of sexual abuse prevention programs implemented in different countries. In this article, we present a review of 70 studies (1981–2017) evaluating prevention programs, conducted mostly in the United States and Canada, although with a considerable presence also in other countries, such as New Zealand and the United Kingdom. The results of these studies, in general, are very promising and encourage us to continue this type of intervention, almost unanimously confirming its effectiveness. Prevention programs encourage children and adolescents to report the abuse experienced and they may help to reduce the trauma of sexual abuse if there are victims among the participants. We also found that some evaluations have not considered the possible negative effects of this type of programs in the event that they are applied inappropriately. Finally, we present some methodological considerations as critical analysis to this type of evaluations.

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Challenges of Fear Conditioning Research in the Age of RDoC

Zeitschrift für Psychologie ◽

10.1027/2151-2604/a000303 ◽

2017 ◽

Vol 225 (3) ◽

pp. 189-199 ◽

Cited By ~ 5

Author(s):

Tina B. Lonsdorf ◽

Jan Richter

Keyword(s):

Fear Conditioning ◽

Clinical Diagnosis ◽

Research Domain Criteria ◽

Major Focus ◽

The Future ◽

Definition Of ◽

Methodological Considerations ◽

Research Domain

Abstract. As the criticism of the definition of the phenotype (i.e., clinical diagnosis) represents the major focus of the Research Domain Criteria (RDoC) initiative, it is somewhat surprising that discussions have not yet focused more on specific conceptual and procedural considerations of the suggested RDoC constructs, sub-constructs, and associated paradigms. We argue that we need more precise thinking as well as a conceptual and methodological discussion of RDoC domains and constructs, their interrelationships as well as their experimental operationalization and nomenclature. The present work is intended to start such a debate using fear conditioning as an example. Thereby, we aim to provide thought-provoking impulses on the role of fear conditioning in the age of RDoC as well as conceptual and methodological considerations and suggestions to guide RDoC-based fear conditioning research in the future.

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