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  • 1990-1994  (2)
  • 1905-1909
  • Angiosperms  (1)
  • Heart rate  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of applied physiology 68 (1994), S. 20-24 
    ISSN: 1439-6327
    Keywords: Dance ; Oxygen uptake ; Heart rate ; Exercise ; Arm work
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The oxygen uptake and heart rate in various styles of dance and in a graded step test have been compared in ten healthy women aged [mean (SD)] 34 (5) years. Dance was choreographed into progressively more energetic sequences typical of community classes, and videotaped. Oxygen uptake was assessed using a respirometer carried in a back-pack. Each of the two tests (dance and step) took 15–20 min and measurements were made in randomised balanced order on the same day. The mean oxygen costs of dance ranged from 1.29 l · min−1 for low impact style to 1.83 1 · min−1 for high impact style with arm work; mean heart rates were 135 and 174 beats · min−1 respectively. Low impact dance raised heart rates above 60% of predicted maximum and so would provide training; during high impact dance recorded heart rates sometimes exceeded recommended safe limits. The addition of arm work significantly increased heart rates in both high and low impact dance but when oxygen pulses for each style of dance were compared no significant differences attributable to arm work were found. Moreover calculated differences between oxygen uptakes in stepping and dance at the same heart rates (those recorded during dance) were not significant for any of the four styles. Analysis of variance confirmed that neither arm work nor impact contributed significantly to the differences, so there was no evidence that these forms of dance change the normal relation between heart rate and oxygen uptake found in dynamic activities with large muscle groups such as stepping.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 172 (1990), S. 99-118 
    ISSN: 1615-6110
    Keywords: Angiosperms ; Myrtaceae ; Eucalyptus ; Rarity ; allozymes ; phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Phylogenetic relationships among the 12 species of the “green ash” group of eucalypts were examined using allozyme data, to investigate the causes of rarity in three localized endemics of the group. The relationships suggested by the allozyme data showed both similarities to and differences from those estimated from morphological data byLadiges and coworkers. The phylogenetic relationships suggest that rarity inEucalyptus burgessiana may be related to recent divergence, whileE. paliformis andE. rupicola are relatively old species, more likely to be relicts, and/or restricted to a rare habitat.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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