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Changes in human muscle oxygen saturation and mean fiber conduction velocity during intense dynamic exercise—effect of muscular training status
Author(s) -
Kilen Anders,
Gizzi Leonardo,
Jensen Bente Rona,
Farina Dario,
Nordsborg Nikolai Baastrup
Publication year - 2012
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.23388
Subject(s) - medicine , physical medicine and rehabilitation , cardiology , workload , muscle fibre , skeletal muscle , physical therapy , nerve conduction velocity , computer science , operating system
In this study we investigated whether an association exists between muscle fiber conduction velocity (MFCV) and local muscle oxygen saturation (St O 2 ) in the superficial part of the latissimus dorsi muscle of runners and swimmers during exhaustive dynamic exercise. Methods: Participants performed arm cranking with increasing intensity until exhaustion. Results: Runners' MFCV was unchanged with increasing arm‐cranking exercise intensity, but was higher ( P < 0.05) than swimmers' MFCV at the same workload. Swimmers' MFCV increased ( P < 0.05) with increasing exercise intensity and reached values at exhaustion similar to those of the runners. St O 2 was similar in swimmers and runners at rest and decreased with increasing exercise intensity. St O 2 was higher ( P < 0.05) at the same workload in swimmers compared with runners. St O 2 and MFCV were significantly but very weakly correlated in both swimmers and runners. Conclusion: No association exists between surface MFCV and St O 2 in either trained or untrained human skeletal muscle during exhaustive intense dynamic exercise. Muscle Nerve, 2012