Oosterwijk, R. (Roos) (2016) Changes in ATP efficiency and propulsion technique of able-bodied males after a 3-week hand cycle-like practice intervention. thesis, Human Movement Sciences.
Full text available on request.Abstract
Background: Aim of the study was to examine the mechanisms underlying motor learning following a practice intervention by examining changes in efficiency of ATP use and in propulsion technique. Better understanding of these mechanisms can contribute to the improved design of practice interventions during rehabilitation that can lead to superior rehabilitation outcome. Methods: Two able-bodied subjects performed 80 minutes of unstructured practice on a MR compatible hand cycle at a frequency of 92 rpm. They completed two 4-min pre-tests, eight 2x4-min practice sessions and two 4-min post-tests at a fixed load of 0.2 kg. To examine the propulsion technique, force application and activation of the biceps brachii brevis muscle were measured. To determine whether motor learning was associated with changes in ATP efficiency, 31P-Magnetic Resonance Spectroscopy (31P-MRS) measurements were conducted on the m. biceps brachii brevis. Results: The propulsion technique of the participants changed after practice, resulting in a more stable movement pattern in one of the participants and a more variable movement pattern in the other subject. Regardless of practice time, a more stable movement pattern was associated with less depletion of [PCr] after four minutes of hand cycling as indicated by 31PMRS measurements. Conclusion: The results suggest that ATP efficiency is an indicator of motor learning. Unfortunately the relationship between pH, Pi and ATP efficiency remained unclear due to variation between the participants. Multi-modality studies with more participants have to be conducted to confirm our findings and to determine whether a relationship between pH, Pi and ATP efficiency exists. This increased insight on the underlying mechanisms of motor learning may provide the possibility to improve practice intervention design ultimately aimed at optimal rehabilitation.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Vegter, dr. R.J.K. and Mouton, dr. L.J. and Jeneson, dr. J.A.L. and Woude, prof. dr. L.H.V. |
| Faculty: | Medical Sciences |
| Date Deposited: | 02 May 2022 08:11 |
| Last Modified: | 02 May 2022 08:11 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3177 |
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