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Fulltext Muscle oxygenation during hybrid arm and functional electrical stimulation-evoked leg cycling after spinal cord injury

Hasnan N, Mohamad Saadon NS, Hamzaid NA, Teoh MX, Ahmadi S, Davis GM

Medicine (Baltimore), 2018 Oct;97(43):e12922.
PMID: 30412097 DOI: 10.1097/MD.0000000000012922

This study compared muscle oxygenation (StO2) during arm cranking (ACE), functional electrical stimulation-evoked leg cycling (FES-LCE), and hybrid (ACE+FES-LCE) exercise in spinal cord injury individuals. Eight subjects with C7-T12 lesions performed exercises at 3 submaximal intensities. StO2 was measured during rest and exercise at 40%, 60%, and 80% of subjects' oxygen uptake (VO2) peak using near-infrared spectroscopy. StO2 of ACE showed a decrease whereas in ACE+FES-LCE, the arm muscles demonstrated increasing StO2 from rest in all of VO2) peak respectively. StO2 of FES-LCE displayed a decrease at 40% VO2 peak and steady increase for 60% and 80%, whereas ACE+FES-LCE revealed a steady increase from rest at all VO2 peak. ACE+FES-LCE elicited greater StO2 in both limbs which suggested that during this exercise, upper- and lower-limb muscles have higher blood flow and improved oxygenation compared to ACE or FES-LCE performed alone.
Peak expiratory flow in the standing and sitting positions is equivalent in adults: a cross-over study

Teng CL, Chia KM, D'Cruz J, Gomez CA, Muthusamy N, Saadon NS, et al.

Fam Pract, 2020 10 19;37(5):637-640.
PMID: 32417893 DOI: 10.1093/fampra/cmaa048

BACKGROUND: It is uncertain whether peak flow measurement is best done in the standing or sitting position.
METHODS: In this cross-over study, study participants were randomized to perform the initial peak expiratory flow (PEF) measurement in either standing or sitting position. The highest of three readings in each position were compared using paired t-test. A mean difference of

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