title: Effect of leg vascular occlusion on arm cycling peak oxygen uptake in spinal cord-injured individuals.
abstract: METHODS
  Cross-sectional single-subject design.
  
  
  OBJECTIVE
  To determine whether leg vascular occlusion (LEVO) augment arm cycling (ACE) peak oxygen uptake in spinal cord-injured individuals.
  
  
  METHODS
  University Hospital, Norway.
  
  
  METHODS
  Fifteen individuals with C(4) to T(12) spinal cord injury (SCI) were recruited and divided into two groups: injury above (SCI-high, n=8) or below (SCI-low, n=7) the T(6) level. Peak oxygen uptake (VO(2peak)) was measured during (1) ACE combined with LEVO, (2) ACE alone and (3) ACE combined with functional electrical stimulation cycling (FES hybrid cycling).
  
  
  RESULTS
  In the SCI-high group, VO(2peak) and peak Watt during ACE with LEVO were higher than ACE alone: 20.0 (±5.0) versus 17.6 (±5.0) ml kg(-1) min(-1) (P=0.006), and 72.5(±32) versus 80.0 (±34) Watt (P=0.016), respectively. However, FES hybrid cycling VO(2peak) was significantly higher than ACE with LEVO: 24.4 (±4.1) versus 20.0 (±5.0) ml kg(-1) min(-1) (P=0.006). In the SCI-low group, there was no difference in VO(2peak) and related parameters between the three modalities.
  
  
  CONCLUSIONS
  For spinal cord-injured individuals with injury level above T(6) (high) in the present study, LEVO combined with ACE augment VO(2peak). However, this acute increase in VO(2peak) was lower than when FES cycling was combined with ACE. These findings may have future implications for exercise prescription for spinal cord-injured individuals.
authors: Department of Physical Medicine and Rehabilitation, St Olav's University Hospital, Trondheim, Norway. berit.brurok@ntnu.no
authors: B
authors: B
authors: Brurok
authors: T
authors: T
authors: Tørhaug
authors: G
authors: G
authors: Leivseth
authors: T
authors: T
authors: Karlsen
authors: J
authors: J
authors: Helgerud
authors: J
authors: J
authors: Hoff
mesh_terms: D000328:Adult; D001132:Arm / Q000098:blood supply* / Q000502:physiology; D003430:Cross-Sectional Studies; D004599:Electric Stimulation Therapy / Q000379:methods; D005081:Exercise Therapy / Q000379:methods*; D017079:Exercise Tolerance / Q000502:physiology; D005260:Female; D006801:Humans; D007866:Leg / Q000098:blood supply* / Q000502:physiology; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology*; D013119:Spinal Cord Injuries / Q000503:physiopathology* / Q000534:rehabilitation*; D055815:Young Adult