The impact of venous occlusion per se on forearm muscle blood flow: implications for the near-infrared spectroscopy venous occlusion technique

No Thumbnail Available
File version
Cross, Troy J
Sabapathy, Surendran
Griffith University Author(s)
Primary Supervisor
Other Supervisors
File type(s)

The purpose of this study was to examine the effect of venous occlusion per se on forearm muscle blood flow, as determined by the near‐infrared spectroscopy (NIRS) venous occlusion technique (NIRS‐VOT). NIRS data were obtained from the flexor digitorum superficialis (FDS) muscle on the dominant arm of 16 young, ostensibly healthy participants (14 men and two women; 30 ± 6 year; 73 ± 7 kg). Participants completed a series of five venous occlusion trials while seated at rest, and a series of 12 venous occlusion trials during a reactive hyperaemia induced by 5 min of forearm arterial occlusion. The NIRS‐VOT was used to assess FDS muscle blood flow (urn:x-wiley:14750961:media:cpf12301:cpf12301-math-0001), beat‐by‐beat, over the first four cardiac beats during venous occlusions. urn:x-wiley:14750961:media:cpf12301:cpf12301-math-0002 was also reported as a cumulative value, wherein the first two, first three and first four cardiac beats were used to calculate muscle blood flow. We observed that urn:x-wiley:14750961:media:cpf12301:cpf12301-math-0003 was highest when calculated over the first cardiac beat during venous occlusions performed at rest and throughout reactive hyperaemia (P<0·05). Moreover, the inclusion of more than one cardiac beat in the calculation of urn:x-wiley:14750961:media:cpf12301:cpf12301-math-0004 underestimated muscle blood flows, irrespective of the prevailing level of arterial inflow. These findings support the idea that venous occlusion per se affects the measurement of urn:x-wiley:14750961:media:cpf12301:cpf12301-math-0005 via the NIRS‐VOT. Accordingly, it is recommended that urn:x-wiley:14750961:media:cpf12301:cpf12301-math-0006 is determined over the first cardiac beat when using the NIRS‐VOT to assess microvascular blood flow of human forearm muscles.

Journal Title

Clinical Physiology and Functional Imaging

Conference Title
Book Title
Thesis Type
Degree Program
Publisher link
Patent number
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status

This publication has been entered into Griffith Research Online as an Advanced Online Version.

Access the data
Related item(s)

Medical physiology

Medical physiology not elsewhere classified

Persistent link to this record