Abstract
Muscle deoxygenation responses provide information about the training impulse of an exercise session enabling adaptation to be predicted. Our aim was to investigate muscle oxygenation profiles during prolonged low-intensity eccentric and concentric cycling. Twelve healthy men performed two 45-min exercise sessions of concentric (CON) and eccentric (ECC) cycling, matched for the same heart rate at the start of each session. Mechanical power output during ECC was ∼2.5 times that of CON (210±40 W vs. 82±16 W). Oxygen uptake, blood lactate, cardiac output and systolic arterial pressure responses did not differ between exercises. Heart rate was similar at 5 min of each exercise bout but progressively increased during ECC and was higher at 15, 30 and 45 min of ECC compared to CON (+10 bpm), with a trend for a lower stroke volume. Diastolic and mean blood pressures were higher during ECC. No significant differences were observed in muscle oxygenation profiles. Muscle oxygenation responses during prolonged low-intensity exercise were not affected by the type of muscle action at the same metabolic demand and cardiac output.
| Original language | English |
|---|---|
| Pages (from-to) | 173-180 |
| Number of pages | 8 |
| Journal | International Journal of Sports Medicine |
| Volume | 39 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Feb 2018 |
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Keywords
- cardiovascular
- near infra-red spectroscopy
- negative muscle work
- oxygen uptake
- Tissue saturation index
- vascular conductance
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
Cite this
Muscle Oxygenation Responses to Low-intensity Steady Rate Concentric and Eccentric Cycling. / Rakobowchuk, Mark; Isacco, Laurie; Ritter, Ophélie; Represas, Alicia González; Bouhaddi, Malika; Degano, Bruno; Tordi, Nicolas; Mourot, Laurent.
In: International Journal of Sports Medicine, Vol. 39, No. 3, 01.02.2018, p. 173-180.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Muscle Oxygenation Responses to Low-intensity Steady Rate Concentric and Eccentric Cycling
AU - Rakobowchuk, Mark
AU - Isacco, Laurie
AU - Ritter, Ophélie
AU - Represas, Alicia González
AU - Bouhaddi, Malika
AU - Degano, Bruno
AU - Tordi, Nicolas
AU - Mourot, Laurent
PY - 2018/2/1
Y1 - 2018/2/1
N2 - Muscle deoxygenation responses provide information about the training impulse of an exercise session enabling adaptation to be predicted. Our aim was to investigate muscle oxygenation profiles during prolonged low-intensity eccentric and concentric cycling. Twelve healthy men performed two 45-min exercise sessions of concentric (CON) and eccentric (ECC) cycling, matched for the same heart rate at the start of each session. Mechanical power output during ECC was ∼2.5 times that of CON (210±40 W vs. 82±16 W). Oxygen uptake, blood lactate, cardiac output and systolic arterial pressure responses did not differ between exercises. Heart rate was similar at 5 min of each exercise bout but progressively increased during ECC and was higher at 15, 30 and 45 min of ECC compared to CON (+10 bpm), with a trend for a lower stroke volume. Diastolic and mean blood pressures were higher during ECC. No significant differences were observed in muscle oxygenation profiles. Muscle oxygenation responses during prolonged low-intensity exercise were not affected by the type of muscle action at the same metabolic demand and cardiac output.
AB - Muscle deoxygenation responses provide information about the training impulse of an exercise session enabling adaptation to be predicted. Our aim was to investigate muscle oxygenation profiles during prolonged low-intensity eccentric and concentric cycling. Twelve healthy men performed two 45-min exercise sessions of concentric (CON) and eccentric (ECC) cycling, matched for the same heart rate at the start of each session. Mechanical power output during ECC was ∼2.5 times that of CON (210±40 W vs. 82±16 W). Oxygen uptake, blood lactate, cardiac output and systolic arterial pressure responses did not differ between exercises. Heart rate was similar at 5 min of each exercise bout but progressively increased during ECC and was higher at 15, 30 and 45 min of ECC compared to CON (+10 bpm), with a trend for a lower stroke volume. Diastolic and mean blood pressures were higher during ECC. No significant differences were observed in muscle oxygenation profiles. Muscle oxygenation responses during prolonged low-intensity exercise were not affected by the type of muscle action at the same metabolic demand and cardiac output.
KW - cardiovascular
KW - near infra-red spectroscopy
KW - negative muscle work
KW - oxygen uptake
KW - Tissue saturation index
KW - vascular conductance
UR - http://www.scopus.com/inward/record.url?scp=85041125668&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041125668&partnerID=8YFLogxK
U2 - 10.1055/s-0043-121272
DO - 10.1055/s-0043-121272
M3 - Article
VL - 39
SP - 173
EP - 180
JO - International Journal of Sports Medicine
JF - International Journal of Sports Medicine
SN - 0172-4622
IS - 3
ER -