Differences in Oxygenation Kinetics Between the Dominant and Nondominant Flexor Digitorum Profundus in Rock Climbers

Giles, David and Romero, Vanesa España and Garrido, Inmaculada and de la O Puerta, Alex and Stone, Keeron J and Fryer, Simon M (2017) Differences in Oxygenation Kinetics Between the Dominant and Nondominant Flexor Digitorum Profundus in Rock Climbers. International Journal of Sports Physiology and Performance, 12 (1). pp. 137-139. ISSN 1555-0265

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Abstract

Purpose. This study examined differences in oxygenation kinetics in the non-dominant and dominant flexor digitorum profundus (FDP) of rock climbers. Methods. Participants consisted of 28 sport climbers with a range of on-sight abilities (6a+ to 8a French Sport). Using near infrared spectroscopy, oxygenation kinetics of the FDP was assessed by calculating the time to half recovery (t½ recovery) of the tissue saturation index (TSI) following 3-5 min of ischemia. Results. A 2-way mixed model ANOVA found a non-significant interaction (p =0.112) for TSI x sex. However, there was a significant the main effect (p =0.027) handedness (dominant vs. non-dominant FDP). The dominant forearm recovered 13.6% quicker (t½ recovery mean difference = 1.12 sec, 95% CI 0.13 to 2.10 sec) compared to the non-dominant FDP. This was not affected by 6-month on-sight climbing ability or sex (p =0.839, p =0.683). Conclusions. Significant intra-individual differences in oxygenation kinetics of the FDP were found. Improvements in oxygenation kinetics within the FDP are likely due to the abilities of the muscle to deliver, perfuse and consume oxygen. These enhancements may be due to structural adaptations in the microvasculature such as an increase in capillary density and an enhanced improvement in capillary filtration.

Item Type: Article
Article Type: Article
Additional Information: Accepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance,2017, http://dx.doi.org/10.1123/ijspp.2015-0651. © Human Kinetics, Inc.
Uncontrolled Keywords: Rock Climbing, Asymmetry, Handedness, Oxygenation kinetics, Near Infrared Spectroscopy
Related URLs:
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV191.2 Outdoor Life. Outdoor recreation. > GV199.44 Rock climbing.
Q Science > QP Physiology > QP301.H75 Physiology. Sport
Divisions: Schools and Research Institutes > School of Sport & Exercise > Sport and Exercise
Research Priority Areas: Sport, Exercise, Health & Wellbeing
Depositing User: Anne Pengelly
Date Deposited: 25 Apr 2016 13:53
Last Modified: 20 Sep 2017 03:51
URI: http://eprints.glos.ac.uk/id/eprint/3424

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