Erschienen in:
25.01.2018 | Original Article
Impaired skeletal muscle oxygenation following allogeneic hematopoietic stem cell transplantation is associated with exercise capacity
verfasst von:
Tatsushi Wakasugi, Shinichiro Morishita, Katsuji Kaida, Yusuke Itani, Norihiko Kodama, Kazuhiro Ikegame, Hiroyasu Ogawa, Kazuhisa Domen
Erschienen in:
Supportive Care in Cancer
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Ausgabe 7/2018
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Abstract
Introduction
Impaired skeletal muscle oxygenation potentially contributes to reduced exercise capacity in allogeneic hematopoietic stem cell transplantation (allo-HSCT) patients during early recovery and may explain altered hemoglobin responses to exercise following allo-HSCT. We investigated whether skeletal muscle oxygenation parameters and hemoglobin parameters in the tibialis anterior decreased following allo-HSCT, and whether these results were associated with declines in exercise capacity.
Methods
We used near-infrared spectroscopy during and following a repeated isometric contraction task at 50% of maximal voluntary contraction in 18 patients before and after allo-HSCT.
Results
The rate of decrease in the muscle oxy-hemoglobin saturation (SmO2; an index of skeletal muscle oxygenation) was significantly lower after allo-HSCT (P < 0.01). In contrast, total hemoglobin (an index of hemoglobin) was not different after allo-HSCT. Furthermore, SmO2 during and following exercise was associated with exercise capacity (r = 0.648; P = 0.004 vs. r = 0.632; P = 0.005).
Conclusion
The results of this study reveal that although the peripheral hemoglobin response was not altered by allo-HSCT, skeletal muscle oxygenation was decreased following allo-HSCT. Furthermore, the decrease in skeletal muscle oxygenation was associated with a reduction in exercise capacity.