https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20239 2; age, 68.8 ± 6.4 year) not meeting Australian physical activity guidelines (150 min/week of moderate to vigorous activity) were randomized to consume capsules containing 21 mg of lutein or placebo with 250 mL of full-cream milk per day for 4 weeks and encouraged to increase physical activity. Physical activity was assessed by self-report, pedometry and accelerometry (daily activity counts and sedentary time). Exercise self-efficacy was assessed by questionnaire. Thirty-nine participants competed the study (Lutein = 19, Placebo = 20). Lutein increased plasma lutein concentrations compared with placebo (p < 0.001). Absolute and percentage changes in plasma lutein were inversely associated with absolute (r = −0.36, p = 0.03) and percentage changes (r = −0.39, p = 0.02) in sedentary time. Percentage change in plasma lutein was positively associated with the percentage change in average daily activity counts (r = 0.36, p = 0.03). Exercise self-efficacy did not change (p = 0.16). Lutein increased plasma lutein, which was associated with increased physical activity and reduced sedentary time in older adults. Larger trials should evaluate whether Lutein can provide health benefits over the longer term.]]> Wed 11 Apr 2018 11:57:47 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21444 P < 0.04) in participants (n = 8) who increased training load (completed light training then heavy training) and, although maximal rate of heart rate increase did not change (P = 0.27), within-individual changes in work were correlated with changes in maximal rate of heart rate increase (r = 0.87, P = 0.005). Work during 5 min cycle time-trial increased 6.5% (P < 0.001) in 9 participants who decreased training load (completed heavy training then light training) and maximal rate of heart rate increase increased 28% (P = 0.002) but the changes in maximal work were not related to changes in rate of heart rate increase (r = 0.32, P = 0.40). Heart rate recovery tended to track changes in 5 min cycle time-trial work following increases and decreases in training load (r = 0.65–0.75, P = 0.03–0.08). Conclusions: Maximal rate of heart rate increases during cycling at 100 W tracks reductions in exercise performance when training load is increased, but not performance improvements when training loads are reduced. Maximal rate of heart rate increase may be a useful adjunct to heart rate recovery for tracking changes in exercise performance.]]> Sat 24 Mar 2018 08:05:43 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26834 max) of the right knee extensor muscles. For the next 7 days, 25 participants applied cycloidal vibration therapy to the knee extensors twice daily and 25 participants performed stretching and sports massage (SSM) twice daily. Main Outcome Measures: Changes in markers of muscle damage [peak isometric torque (PIT), serum creatine kinase (CK), and serum myoglobin (Mb)], muscle soreness (visual analog scale), and inflammation [serum C-reactive protein (CRP)] were assessed. Results: After ECC_max, there was no difference in recovery of PIT and muscle soreness or serum CK, Mb, and CRP levels between vibration and SSM groups (P > 0.28). Conclusions: Cycloidal vibration therapy is no more effective than the standard practice of stretching and massage to promote muscle recovery after the performance of muscle-damaging exercise. Clinical Relevance: Prescription of vibration therapy after maximal exercise involving eccentric muscle damage did not alleviate signs and symptoms of muscle damage faster than the standard prescription of stretching and massage.]]> Sat 24 Mar 2018 07:41:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28286 cyc) and running at 8 km/h (rHRI_run) in 13 male triathletes following two weeks of light-training (LT), two weeks of heavy-training (HT) and a two-day recovery period (RP). A five min cycling time-trial assessed performance and peak oxygen consumption (VO_2peak). Results: Performance likely decreased following HT (Effect size ± 90% confidence interval = -0.18 ± 0.09), then very likely increased following RP (0.32 ± 0.14). rHRI_cyc very likely decreased (-0.48 ± 0.24), and rHRIrun possibly decreased (-0.33 ± 0.48), following HT. Changes in both measures were unclear following RP. Steady-state HR was almost certainly lower (-0.81 ± 0.31) during rHRI_cyc than rHRI_run. A large correlation was found between reductions in performance and rHRI_run (r ± 90%; CI = 0.65 ± 0.34) from LT to HT, but was unclear for rHRI_cyc. Trivial within-subject correlations were found between rHRI and performance, but the strength of relationship between rHRI_run and performance was largely associated with VO_2peak following LT (r = -0.58 ± 0.38). Conclusions: Performance reductions were most sensitively tracked by rHRI_run following HT. This may be due to rHRI_run being assessed at a higher intensity than rHRI_cyc, inferred from a higher steady-state HR and supported by a stronger within-subject relationship between rHRI_run and performance in individuals with a lower VO_2peak, in whom the same exercise intensity would represent a greater physiological stress. rHRI assessed at relatively high exercise intensities may better track performance changes.]]> Sat 24 Mar 2018 07:41:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29263 0.6). There were inverse within-subject relationships between indices of HRR and performance (r = −0.6, p ≤ 0.004). Peak HR decreased 3.2 ± 5.1 bpm following heavy training (p = 0.06) and significantly increased 4.9 ± 4.3 bpm following recovery (p = 0.004). There was a moderate within-subject relationship between peak HR and exercise performance (r = 0.7, p ≤ 0.001). Controlling for peak HR reduced the relationships between HRR and performance (r = −0.4–0.5, p < 0.05). Conclusions: This study demonstrated that HRR tracks short-term changes in exercise performance within-individuals, such that increases in HRR are associated with poorer exercise performance following heavy training. Peak HR can be compromised under conditions of fatigue, and needs to be taken into account in HRR analyses.]]> Sat 24 Mar 2018 07:39:14 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29225 Sat 24 Mar 2018 07:36:49 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22696 max) of the right knee extensor muscles. For the next 7 days, 25 participants applied cycloidal vibration therapy to the knee extensors twice daily and 25 participants performed stretching and sports massage (SSM) twice daily. Main Outcome Measures: Changes in markers of muscle damage [peak isometric torque (PIT), serum creatine kinase (CK), and serum myoglobin (Mb)], muscle soreness (visual analog scale), and inflammation [serum C-reactive protein (CRP)] were assessed. Results: After ECC_max, there was no difference in recovery of PIT and muscle soreness or serum CK, Mb, and CRP levels between vibration and SSM groups (P > 0.28). Conclusions: Cycloidal vibration therapy is no more effective than the standard practice of stretching and massage to promote muscle recovery after the performance of muscle-damaging exercise. Clinical Relevance: Prescription of vibration therapy after maximal exercise involving eccentric muscle damage did not alleviate signs and symptoms of muscle damage faster than the standard prescription of stretching and massage.]]> Sat 24 Mar 2018 07:10:24 AEDT ]]>