Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Bimanual movement control: insights from golf ball striking
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Laboratory for Biomechanics and Motor Control. Karolinska institutet, Inst för klinisk vetenskap, intervention och teknik / Dept of Clinical Science, Intervention and Technology.
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of this thesis was to gain insight into the control of complex bimanual movements that are both fast and accurate. For this, skilled golf ball striking was used as a model in two experimental studies (I and III). The thesis also includes two methodological studies (II and IV), intended to assist in present and future investigation on bimanual movement control. Study I shows a common kinematic proximal-to-distal sequencing (PDS) pattern and speed-summation effect in skilled golf players of both genders. Using a common PDS movement strategy in golf ball striking at various endpoint speeds appears beneficial from mechanical and control points of view and could serve the purpose of providing both high speed and accuracy. In Study II a general expression for mobility was derived, which can be applied for extending the theory of mobility to double-handed grasping and manipulation. Study III found that kinematic contributions to endpoint velocity at slow, medium and fast test conditions were provided by the same subset of possible joint rotations. However, the specific subset differed between levels of expertise. The inertial behavior of the linkage arms-hands-club promoted movement parallel to and resisted movement orthogonal to the club path close to ball impact, at all endpoint speeds investigated. These findings extend previous knowledge regarding endpoint control in single-limb movements. Moreover, results regarding movement organization in Study I together with results in Study III regarding inertial behavior suggest the existence of limb configurations able to simultaneously exploit intersegmental dynamics and endpoint mobility in a proficient manner. To make the control of intersegmental dynamics in bimanual striking transparent, however, torques originating from segmental in teractions should be determined. However, when hands are placed next to each other or are overlapping it becomes challenging to find placements for standard force sensors which allow separation of right and left hand forces without altering normal behavior. As partially explored in Study IV, pressure mapping of the right hand together with inverse dynamics calculations for the golf club can potentially provide an adequate solution.

Place, publisher, year, edition, pages
Karolinska institutet , 2014. , 35 p.
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-3526ISBN: 978-91-7549-718-1 (print)OAI: oai:DiVA.org:gih-3526DiVA: diva2:757515
Public defence
2014-11-12, 1505, GIH, Lidingövägen 1, Stockholm, 13:00 (English)
Opponent
Supervisors
Available from: 2014-10-22 Created: 2014-10-22 Last updated: 2014-10-27Bibliographically approved
List of papers
1. Elite golfers' kinematic sequence in full-swing and partial-swing shots
Open this publication in new window or tab >>Elite golfers' kinematic sequence in full-swing and partial-swing shots
2010 (English)In: Sports Biomechanics, ISSN 1476-3141, Vol. 9, no 4, 236-244 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to investigate whether kinematic proximal-to-distal sequencing (PDS) and speed-summation are common characteristics of both partial and full-swing shots in golf players of different skill levels and genders. A total of 45 golfers participated, 11 male tournament professionals, 21 male and 13 female elite amateurs. They performed partial shots with a wedge to targets at three submaximal distances, 40, 55 and 70 m, and full-swing shots with a 5 iron and a driver for maximal distance. Pelvis, upper torso and hand movements were recorded in 3D with an electromagnetic tracking system (Polhemus Liberty) at 240 Hz and the magnitude of the resultant angular velocity vector of each segment was computed. The results showed a significant proximal-to-distal temporal relationship and a concomitant successive increase in maximum (peak) segment angular speed in every shot condition for both genders and levels of expertise. A proximal-to-distal utilization of interaction torques is indicated. Using a common PDS movement strategy in partial and full-swing golf shots appears beneficial from mechanical and control points of view and could serve the purpose of providing both high speed and accuracy.

National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-1628 (URN)10.1080/14763141.2010.535842 (DOI)
Available from: 2010-12-13 Created: 2010-12-13 Last updated: 2014-10-22Bibliographically approved
2. The concept of mobility in single- and double handed manipulation.
Open this publication in new window or tab >>The concept of mobility in single- and double handed manipulation.
2014 (English)In: Journal of Biomechanics, ISSN 0021-9290, E-ISSN 1873-2380, Vol. 47, no 14, 3569-3573 p.Article in journal (Refereed) Published
Abstract [en]

The concept of mobility describes an important property of the human body when performing manipulation tasks. It describes, in a sense, how easy it is to accelerate a link or a point on the manipulator. Most often it is calculated for the end-link or end-point of the manipulator, since these are important for the control objective of the manipulator. Mobility is the inverse of the inertia experienced by a force acting on the end-point, or a combined force and torque acting on the end-link. The concept has been used in studies of reaching tasks with one arm, but thus far not for bi-manual manipulation. We present here the concept for both single-handed and double-handed manipulation, in a general manner which includes any type of grip of the hands on the object. The use of the concept is illustrated with data on the left and right arm in a golf swing.

National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-3523 (URN)10.1016/j.jbiomech.2014.09.008 (DOI)25287112 (PubMedID)
Available from: 2014-10-22 Created: 2014-10-22 Last updated: 2017-12-05Bibliographically approved
3. Endpoint control in a bimanual striking task: application to the golfswing
Open this publication in new window or tab >>Endpoint control in a bimanual striking task: application to the golfswing
Show others...
2014 (English)Article in journal (Refereed) Submitted
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-3524 (URN)
Note

At the time of Fredrik Tinmark's dissertation the article was submitted.

Available from: 2014-10-22 Created: 2014-10-22 Last updated: 2014-10-22Bibliographically approved
4. Using Motion Analysis and Pressure sensitive sensors for determining normal forces when gripping a cylinder
Open this publication in new window or tab >>Using Motion Analysis and Pressure sensitive sensors for determining normal forces when gripping a cylinder
(English)Manuscript (preprint) (Other academic)
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-3525 (URN)
Note

At the time of Fredrik Tinmark's dissertation the articles was a manuscript.

Available from: 2014-10-22 Created: 2014-10-22 Last updated: 2014-10-22Bibliographically approved

Open Access in DiVA

fulltext(1097 kB)417 downloads
File information
File name FULLTEXT01.pdfFile size 1097 kBChecksum SHA-512
414d03722b7afad2de40947574e88c445070a73ed71c6494c56e934d0193064f172a23e53ea7cb2042889611aa5524bdc49d9ac3dafee2101ffd5b8b370bdb57
Type fulltextMimetype application/pdf

Other links

Link to dissertation at Karolinska institutet

Search in DiVA

By author/editor
Tinmark, Fredrik
By organisation
Laboratory for Biomechanics and Motor Control
Sport and Fitness Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 417 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn