The Effects of Age and Latent Cytomegalovirus Infection on NK-Cell Phenotype and Exercise Responsiveness in Man
Table 1
Physical characteristics of the participants ( = 20; = 20). Data are mean ± SD. CMV seronegative and CMV seropositive participants indicated by − and +, respectively. Statistical differences between younger (23–39 yrs) and older (50–64 yrs) subjects are indicated by # < 0.05. CMV serostatus did not affect any of the physical characteristics ( > 0.05).
Characteristics
Younger (−) [ = 12]
Younger (+) [ = 12]
Older (−) [ = 8]
Older (+) [ = 8]
One-way ANOVA statistic ( value)
CMV
Age
Age (years)
30.8 ± 6.4
30.0 ± 6.0
55.6 ± 3.6#
57.1 ± 4.1#
<0.1 (0.88)
163.1 (<0.001)
Height (cm)
179.4 ± 7.1
177.9 ± 5.4
178.2 ± 8.6
177.2 ± 6.3
1.3 (0.26)
0.1 (0.72)
Mass (kg)
81.2 ± 12.8
82.8 ± 12.1
79.6 ± 8.1
79.8 ± 10.2
<0.1 (0.98)
<0.1 (0.84)
BMI (kg⋅m−2)
25.1 ± 3.2
25.7 ± 4.7
24.8 ± 2.1
25.8 ± 2.7
0.5 (0.45)
<0.1 (0.90)
Maximum power (W)
241.3 ± 76.5
226.2 ± 57.0
235.7 ± 65.6
225.8 ± 38.8
0.4 (0.53)
<0.1 (0.88)
O2max (mL⋅kg−1⋅min−1)
39.6 ± 13.0
36.7 ± 6.3
40.7 ± 17.4
40.3 ± 7.5
0.4 (0.49)
<0.1 (0.90)
Maximum heart rate (bpm)
187.7 ± 6.1
187.8 ± 5.8
164.4 ± 3.6
164.9 ± 3.7
<0.1 (0.87)
163.4 (<0.001)
Physical activity ratinga (0–7)
5.0 ± 2.2
5.4 ± 2.1
6.3 ± 1.0
5.6 ± 1.9
<0.1 (0.90)
3.2 (0.09)
Age-adjusted fitness scoreb (1–5)
3.6 ± 1.8
3.1 ± 1.1
4.1 ± 1.2
3.7 ± 1.0
<0.1 (0.83)
2.2 (0.14)
Exercise measures
Mean power (W)
183.6 ± 63.5
175.8 ± 61.1
181.3 ± 38.5
172.4 ± 29.7
0.2 (0.62)
<0.1 (0.87)
Mean power (% max)
76.3 ± 11.9
77.5 ± 13.8
77.9 ± 6.2
76.7 ± 7.0
<0.1 (0.99)
<0.1 (0.92)
Mean Heart rate (bpm)
158.7 ± 10.3
159.6 ± 7.5
151.0 ± 7.8#
147.5 ± 8.1#
0.2 (0.64)
13.1 (0.001)
Mean heart rate (% max)
85.4 ± 5.4
84.5 ± 2.7
91.7 ± 4.9#
89.1 ± 3.7#
1.8 (0.20)
14.6 (<0.001)
Maximum heart rate estimated by the equation: 191.5 − (0.007 × age2) [27]. aPhysical Activity Rating (PA-R) calculated from Jackson Questionnaire [28]. bAge-adjusted Fitness Score calculated from Adams and Beam equations [29].
